Commit baseline results

Root cause of the ~100% non-2xx benchmark: the load scripts never actually
ran. Two stacked failures, each of which makes wrk silently fall back to its
built-in default request (GET / with no auth -> 401 -> 100% non-2xx):

1. require('common') failed: wrk runs with cwd at the repo root, where
   common.lua (in loadgen/) is not on package.path. Now each script prepends
   its own directory (via debug.getinfo source) before requiring.
2. os.getpid() is not in luajit's os library (wrk doesn't add it), so the
   randomseed line aborted the chunk once the require was fixed. Guarded with
   (os.getpid and os.getpid() or 0). It was per-process anyway (same PID across
   wrk threads), so it never varied the per-thread seed regardless.

Verified under luajit 2.1 (same interpreter wrk uses), loading each script as
wrk does from the repo-root cwd and via absolute path: all now load, define
request(), and set the Authorization header. The require always failed first,
so neither bug was ever caught -- the wrk path was never exercised end-to-end
(only manual curl, which worked). Not caused by the gen_server port or the
core/loadgen retune; those stand. Re-run _diag_status.lua to confirm real
status codes, then the A/B is finally measuring store work.

.gitignore

@@ -0,0 +1,5 @@
+target
+Cargo.lock
+smarm_trace.json
+.direnv/
+.envrc

Cargo.toml

@@ -0,0 +1,11 @@
+[workspace]
+resolver = "2"
+members = [
+    "urus-server",
+    "axum-server",
+]
+
+[profile.release]
+lto           = "thin"
+codegen-units = 1
+panic         = "unwind"

README.md

@@ -1,2 +1,269 @@
-# urus-benches
+# urus-bench
 
+HTTP/1.1 performance benchmarks comparing **Urus** (actor-based Rust web framework) against **Axum** (async/await Rust via hyper). Designed to test the Urus spec claim: "**within 2× of Axum RPS**."
+
+## Overview
+
+This benchmark suite measures throughput (RPS) and tail latency (p99) across four scenarios of increasing complexity:
+
+| Scenario | Workload | Framework Test |
+|----------|----------|---|
+| **S1** | Bare HTTP (`GET /ping`) | Protocol + connection handling |
+| **S2** | Routing + middleware | Logger, request ID, auth, router |
+| **S3** | In-memory store (mixed) | Message-passing vs. mutex contention |
+| **S4** | SQLite (mixed) | Database overhead under actor model |
+
+Full specification: see [`urus-bench-spec.md`](./urus-bench-spec.md).
+
+## Quick Start
+
+### Prerequisites
+
+- Rust 1.70+ (stable)
+- `wrk` and `wrk2` (load generators)
+- `pidstat`, `taskset` (process introspection & CPU pinning)
+- `curl` (sanity checks before benchmarks)
+
+**Recommended**: Use the provided `nix-shell`:
+```bash
+nix-shell
+```
+
+This installs all dependencies except Rust (assumed already on your host).
+
+### Build
+
+```bash
+cargo build --release
+```
+
+Both `urus-server` and `axum-server` will be built. Runs take ~5–10 minutes total (30s warmup + 60s measure per scenario).
+
+### Run a Single Benchmark
+
+```bash
+./runner.sh urus-mem s1
+```
+
+This runs Urus on scenario S1, pins the server to cores 0–7, the load generator to cores 8–15, and saves results to `results/<batch>/<server>-<scenario>/`.
+
+### Run the Full Matrix
+
+```bash
+./run_all.sh
+```
+
+Runs 8 benchmarks (Urus + Axum on S1–S3, both on SQLite S4). Outputs a summary table and machine-readable JSON index.
+
+### Quick Mode (for development)
+
+```bash
+./run_all.sh --quick
+```
+
+Uses 15s warmup + 15s measure (instead of 30+60) for faster iteration.
+
+## Repository Structure
+
+```
+urus-bench/
+├── urus-server/          # Urus implementation (actor-based)
+│   ├── src/
+│   │   ├── main.rs
+│   │   ├── handlers.rs
+│   │   ├── middleware.rs
+│   │   └── store.rs      # In-memory and SQLite store actors
+│   └── Cargo.toml
+├── axum-server/          # Axum implementation (async/await + hyper)
+│   ├── src/
+│   │   └── main.rs
+│   └── Cargo.toml
+├── loadgen/              # wrk2 scripts
+│   ├── common.lua        # shared headers, bearer token
+│   ├── s1_ping.lua       # simple GET
+│   ├── s2_user_get.lua   # router + middleware
+│   └── s3_mixed.lua      # 80% GET, 15% list, 5% POST
+├── runner.sh             # Single-run orchestrator
+├── run_all.sh            # Full-matrix orchestrator
+├── urus-bench-spec.md    # Detailed specification
+├── shell.nix             # Nix environment
+├── Cargo.toml            # Workspace definition
+└── results/              # Output (created at runtime)
+    └── <batch>/
+        ├── summary.md    # Headline results
+        ├── index.json    # Machine-readable results
+        └── <server>-<scenario>/
+            ├── result.json      # Metrics: RPS, latencies, CPU, RSS
+            └── histogram.txt    # HDR histogram (wrk2 raw output)
+```
+
+## Key Scripts
+
+### `runner.sh`
+
+Runs a single (server, scenario) pair. Usage:
+
+```bash
+./runner.sh [--help] <server> <scenario> [options]
+
+# Examples:
+./runner.sh urus-mem s1               # Urus on S1 (defaults)
+./runner.sh axum-sqlite s4            # Axum on S4
+./runner.sh urus-mem s3 --quick       # Urus on S3, short timings
+./runner.sh axum-mem s2 --measure-sec=120  # Extended measurement
+```
+
+**Server names:**
+- `urus-mem`, `axum-mem` (in-memory store)
+- `urus-sqlite`, `axum-sqlite` (SQLite store)
+
+**Scenario names:**
+- `s1`, `s2`, `s3`, `s4` (see Specification, below)
+
+**Key options:**
+- `--quick`: Use 15s warmup + 15s measure (fast iteration)
+- `--measure-sec=N`: Set measurement duration
+- `--warmup-sec=N`: Set warmup duration
+- `--wrk-conns=N`: Number of connections (default 256)
+- `--wrk-threads=N`: Load generator threads (default 8)
+- `--batch=ID`: Tag for results directory (default: timestamp)
+
+Output: `results/<batch>/<server>-<scenario>/result.json` + `histogram.txt`.
+
+### `run_all.sh`
+
+Runs the full benchmark matrix. Usage:
+
+```bash
+./run_all.sh [options]
+
+# Examples:
+./run_all.sh                   # Full 8-run matrix
+./run_all.sh --quick           # Full matrix, 15s+15s timings
+./run_all.sh --scenarios=s1,s2 # Only S1 and S2
+./run_all.sh --servers=urus-mem,axum-mem  # Only in-memory
+```
+
+**Output:** 
+- `results/<batch>/summary.md` — headline table (text)
+- `results/<batch>/index.json` — structured results (machine-readable)
+
+## Configuration
+
+Environment variables (passed through to `runner.sh`):
+
+| Variable | Default | Purpose |
+|----------|---------|---------|
+| `WARMUP_SEC` | 30 | Warm-up duration (TCP window scaling, JIT) |
+| `MEASURE_SEC` | 60 | Measurement duration (where latencies are sampled) |
+| `PROBE_SEC` | 30 | Saturation probe duration (closed-loop `wrk`) |
+| `SERVER_CPUS` | 0-7 | CPU cores pinned to server process |
+| `LOADGEN_CPUS` | 8-15 | CPU cores pinned to load generator |
+| `WRK_CONNS` | 256 | Concurrent connections |
+| `WRK_THREADS` | 8 | Load generator thread count |
+| `SAT_RATIO` | 0.7 | Target RPS = saturation × this ratio |
+| `BEARER` | (required) | Authorization token for auth middleware |
+
+Example:
+```bash
+MEASURE_SEC=120 WARMUP_SEC=60 ./runner.sh urus-mem s3
+```
+
+## Interpreting Results
+
+### Metrics
+
+Each run produces `result.json` with:
+
+- **`sustained_rps`** — requests/second at the target rate (wrk2 measurement)
+- **`p99_latency_ms`** — 99th percentile latency (HDR histogram)
+- **`server_cpu_pct`** — average CPU utilization (pidstat)
+- **`server_rss_mb`** — peak resident set size
+- **`handler_p99_us`** — server-side handler latency (p99, microseconds)
+
+### Reading the Output
+
+```
+========== [1/8] urus-mem     s1  ==========
+       sustained=54640.68 rps   p99=2.70ms
+```
+
+This is Urus on S1: **54,640 RPS at sustained load, with p99 latency of 2.70ms.**
+
+### Comparing Frameworks
+
+The spec target is **Urus RPS ≥ 50% of Axum RPS** on S1 and S2. Example:
+
+- Urus S1: 54,640 RPS
+- Axum S1: 288,330 RPS
+- Ratio: 0.19 (54,640 / 288,330) → **FAIL** (need ≥ 0.50)
+
+## Development & Debugging
+
+### Running a Single Server in Isolation
+
+```bash
+cargo run --release --bin urus-server -- --store=memory
+# Server listens on 127.0.0.1:8080
+curl -H "Authorization: Bearer test-token-aaaaaaaaaaaaaaaaaaaa" \
+  http://127.0.0.1:8080/ping
+# Response: 200 OK, body "pong"
+```
+
+### Inspecting SQLite Between Runs
+
+```bash
+sqlite3 urus.db "SELECT COUNT(*) FROM users;"
+```
+
+SQLite databases are created in the working directory as `urus.db` (Urus) and `axum.db` (Axum).
+
+### Profiling a Run
+
+Modify `runner.sh` to include `perf record`:
+
+```bash
+perf record -g -F 99 -p $pid -- ...  # during the measurement phase
+perf report
+```
+
+### Viewing Raw Histograms
+
+```bash
+cat results/<batch>/<server>-<scenario>/histogram.txt
+# HDR histogram format (wrk2 output)
+```
+
+Convert to a plot with `hdr-plot` (wrk2 companion tool) or similar.
+
+## Known Limitations
+
+- **No TLS**: HTTP/1.1 plaintext only. TLS would require additional tooling per framework.
+- **Loopback only**: All networking is on 127.0.0.1 (generous environment). Real-world RTT / packet loss not tested.
+- **No pipelining**: HTTP/1.1 pipelining not exercised.
+- **No Cowboy**: BEAM reference removed; focus is Urus vs. Axum.
+
+## Results from 2026-05-26
+
+Summary from the last full run (batch `20260526-220625`):
+
+| | Urus | Axum | Ratio |
+|---|------|------|-------|
+| **S1 RPS** | 54,640 | 288,330 | 0.19 (5.3×) |
+| **S2 RPS** | 53,139 | 315,596 | 0.17 (5.9×) |
+| **S3 RPS** | 53,616 | 316,342 | 0.17 (5.9×) |
+| **S4 RPS** | 52,590 | 320,150 | 0.16 (6.1×) |
+
+**Verdict:** Urus fails the "within 2×" spec target on throughput. Tail latency (p99) remains sub-3ms under all loads; Axum's p99 scales with concurrency (11–60ms). See [`benchmark-report.html`](./benchmark-report.html) for full analysis.
+
+## References
+
+- **Specification**: [`urus-bench-spec.md`](./urus-bench-spec.md) — design principles, scenarios, pass/fail criteria
+- **Latest Report**: `benchmark-report.html` — 2026-05-26 results & interpretation
+- **Urus**: [smarm/urus](https://github.com/smarm/urus)
+- **Axum**: [tokio-rs/axum](https://github.com/tokio-rs/axum)
+- **wrk2**: [giltene/wrk2](https://github.com/giltene/wrk2) — constant-rate load generator
+
+## License
+
+Benchmark code is in the public domain or under your preferred permissive license (MIT/Apache-2.0). See individual crate licenses for dependencies.

analyze_spin_ab_urus.py

@@ -0,0 +1,147 @@
+#!/usr/bin/env python3
+"""Pair before/after urus-bench results and print an A/B comparison.
+
+Layout produced by spin_ab_urus.sh:
+
+    <outdir>/before/<server>-<scenario>-c<cores>/result.json
+    <outdir>/after/<server>-<scenario>-c<cores>/result.json
+
+We pair by the (server, scenario, cores) key and report sustained RPS
+(after/before speedup) and p50/p99/p99.9 latency deltas. The spin gate is
+active only at 2-4 schedulers, so rows at cores 2 and 4 are where an effect is
+expected; cores 1 and 8 are controls (gate inert) and should stay flat.
+"""
+
+import argparse
+import json
+import os
+import re
+import sys
+
+def gate_active(cores):
+    """RFC 004 spinner cap is non-zero only at 2..=4 schedulers (1 and >=5
+    allow 0 spinners), so the policy is active exactly there."""
+    return 2 <= cores <= 4
+
+
+def parse_latency_ms(s):
+    """wrk2 prints '0.50ms' / '1.83ms' / '24.50ms' / '1.20s' / '850.00us'."""
+    if s is None:
+        return None
+    s = str(s).strip()
+    m = re.match(r"^([0-9.]+)\s*(us|ms|s)?$", s)
+    if not m:
+        return None
+    val = float(m.group(1))
+    unit = m.group(2) or "ms"
+    return {"us": val / 1000.0, "ms": val, "s": val * 1000.0}[unit]
+
+
+def load(outdir, sub):
+    """Return {(server, scenario, cores): result_dict} for one side."""
+    base = os.path.join(outdir, sub)
+    out = {}
+    if not os.path.isdir(base):
+        return out
+    for name in os.listdir(base):
+        rj = os.path.join(base, name, "result.json")
+        if not os.path.isfile(rj):
+            continue
+        m = re.match(r"^(.*)-(s\d)-c(\d+)$", name)
+        if not m:
+            continue
+        server, scenario, cores = m.group(1), m.group(2), int(m.group(3))
+        try:
+            with open(rj) as f:
+                out[(server, scenario, cores)] = json.load(f)
+        except (OSError, json.JSONDecodeError) as e:
+            print(f"warn: could not read {rj}: {e}", file=sys.stderr)
+    return out
+
+
+def fnum(x):
+    try:
+        return float(x)
+    except (TypeError, ValueError):
+        return None
+
+
+def main():
+    ap = argparse.ArgumentParser()
+    ap.add_argument("outdir")
+    ap.add_argument("--before", default="before")
+    ap.add_argument("--after", default="after")
+    args = ap.parse_args()
+
+    before = load(args.outdir, args.before)
+    after = load(args.outdir, args.after)
+
+    keys = sorted(set(before) | set(after))
+    if not keys:
+        print("no results found under", args.outdir, file=sys.stderr)
+        return 1
+
+    # --- RPS table ---------------------------------------------------------
+    hdr = f"{'server':<10} {'scen':<4} {'cores':>5} {'before rps':>12} {'after rps':>12} {'speedup':>8}  gate"
+    print("\n== Sustained RPS (higher is better) ==")
+    print(hdr)
+    print("-" * len(hdr))
+    for k in keys:
+        srv, scn, cores = k
+        b = fnum(before.get(k, {}).get("sustained_rps"))
+        a = fnum(after.get(k, {}).get("sustained_rps"))
+        spd = f"{a / b:.2f}x" if (a and b) else "—"
+        gate = "ACTIVE" if gate_active(cores) else "inert"
+        bs = f"{b:,.0f}" if b is not None else "—"
+        as_ = f"{a:,.0f}" if a is not None else "—"
+        print(f"{srv:<10} {scn:<4} {cores:>5} {bs:>12} {as_:>12} {spd:>8}  {gate}")
+
+    # --- latency tables ----------------------------------------------------
+    for pct in ("p50", "p99", "p999"):
+        print(f"\n== {pct} latency, ms (lower is better) ==")
+        h = f"{'server':<10} {'scen':<4} {'cores':>5} {'before':>10} {'after':>10} {'delta':>9}  gate"
+        print(h)
+        print("-" * len(h))
+        for k in keys:
+            srv, scn, cores = k
+            b = parse_latency_ms(before.get(k, {}).get("latency", {}).get(pct))
+            a = parse_latency_ms(after.get(k, {}).get("latency", {}).get(pct))
+            if a is not None and b is not None:
+                delta = f"{(a - b):+.2f}"
+            else:
+                delta = "—"
+            gate = "ACTIVE" if gate_active(cores) else "inert"
+            bs = f"{b:.2f}" if b is not None else "—"
+            as_ = f"{a:.2f}" if a is not None else "—"
+            print(f"{srv:<10} {scn:<4} {cores:>5} {bs:>10} {as_:>10} {delta:>9}  {gate}")
+
+    # --- error sanity (non-2xx should be ~0 on both sides) -----------------
+    noisy = []
+    for k in keys:
+        for side, d in (("before", before), ("after", after)):
+            n = d.get(k, {}).get("non_2xx", 0)
+            if isinstance(n, (int, float)) and n > 0:
+                noisy.append((side, k, n))
+    if noisy:
+        print("\n== WARNING: non-2xx responses (results may be unreliable) ==")
+        for side, (srv, scn, cores), n in noisy:
+            print(f"  {side} {srv} {scn} c{cores}: {n} non-2xx")
+
+    print(
+        "\nReading it: spin is 'worth it' if s3 (and/or s2) RPS rises and/or "
+        "tail latency drops at the gate-ACTIVE cores (2-4), with the inert "
+        "controls (1 and >=5, e.g. 6) staying flat. Flat-or-worse at 2/4 = "
+        "not worth it on real traffic. Cross-check that the saturating control "
+        "(6 cores) is actually CPU-bound, not loadgen-bound, before trusting it."
+    )
+    if "axum-mem" in {k[0] for k in keys}:
+        print(
+            "axum-mem is the control: it doesn't depend on smarm, so its "
+            "before/after should be ~identical. Any drift there means the run "
+            "environment moved, not the patch."
+        )
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())

axum-server/Cargo.toml

@@ -0,0 +1,26 @@
+[package]
+name = "axum-server"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+axum    = { version = "0.7", features = ["macros"] }
+tokio   = { version = "1", features = ["rt-multi-thread", "macros", "signal", "sync", "net"] }
+tower   = "0.5"
+tower-http = { version = "0.5", features = ["request-id", "auth"] }
+http    = "1"
+
+serde      = { version = "1", features = ["derive"] }
+serde_json = "1"
+
+subtle = "2"
+
+# We deliberately use sqlx for the SQLite backing store on this side
+# (rather than rusqlite) because that's the idiomatic axum/tokio choice.
+# Both end up calling the same SQLite C library; what matters for the
+# bench is that each framework uses the idiomatic-on-that-side option.
+sqlx = { version = "0.8", features = ["runtime-tokio", "sqlite", "macros"] }
+
+[[bin]]
+name = "axum-server"
+path = "src/main.rs"

axum-server/src/main.rs

@@ -0,0 +1,585 @@
+//! axum-server — the hyper/axum side of the urus / axum / cowboy benchmark.
+//!
+//! Exposes the same routes as urus-server with materially the same
+//! middleware stack:
+//!   logger (ring-buffer, no stdout) -> request_id -> auth -> router
+//!
+//! Backing store is switchable:
+//!   --store=memory    Mutex<HashMap<u64, User>>
+//!   --store=sqlite    sqlx::SqlitePool in WAL mode
+//!
+//! Routes:
+//!   GET    /ping                      naked (bypasses auth)
+//!   GET    /api/v1/users              list (cap 100)
+//!   POST   /api/v1/users              create
+//!   GET    /api/v1/users/:id          get
+//!   PUT    /api/v1/users/:id          update
+//!   DELETE /api/v1/users/:id          delete
+
+use std::collections::HashMap;
+use std::net::SocketAddr;
+use std::sync::Arc;
+use std::sync::atomic::{AtomicU64, Ordering};
+use std::time::Instant;
+
+use axum::{
+    body::Bytes,
+    extract::{Path, State},
+    http::{header, HeaderValue, Request, StatusCode},
+    middleware::{self, Next as AxumNext},
+    response::Response,
+    routing::get,
+    Router,
+};
+use serde::{Deserialize, Serialize};
+use sqlx::{sqlite::{SqliteConnectOptions, SqliteJournalMode, SqlitePoolOptions}, SqlitePool};
+use subtle::ConstantTimeEq;
+use tokio::sync::Mutex;
+
+// ---------------------------------------------------------------------------
+// CLI (hand-rolled, same shape as urus-server)
+// ---------------------------------------------------------------------------
+
+#[derive(Clone, Debug)]
+struct Cli {
+    addr:    String,
+    store:   StoreKind,
+    token:   String,
+    db_path: String,
+    no_auth: bool,
+}
+
+#[derive(Clone, Copy, Debug, PartialEq)]
+enum StoreKind { Memory, Sqlite }
+
+fn parse_cli() -> Result<Cli, String> {
+    let mut cli = Cli {
+        addr:    "127.0.0.1:8080".into(),
+        store:   StoreKind::Memory,
+        token:   "test-token-aaaaaaaaaaaaaaaaaaaa".into(),
+        db_path: "/tmp/axum-bench.sqlite".into(),
+        no_auth: false,
+    };
+    for arg in std::env::args().skip(1) {
+        let (k, v) = match arg.split_once('=') {
+            Some((k, v)) => (k.to_string(), Some(v.to_string())),
+            None         => (arg.clone(), None),
+        };
+        match (k.as_str(), v) {
+            ("--addr",    Some(v)) => cli.addr = v,
+            ("--token",   Some(v)) => cli.token = v,
+            ("--db-path", Some(v)) => cli.db_path = v,
+            ("--store",   Some(v)) => cli.store = match v.as_str() {
+                "memory" => StoreKind::Memory,
+                "sqlite" => StoreKind::Sqlite,
+                other    => return Err(format!("unknown store: {other}")),
+            },
+            ("--no-auth", None)    => cli.no_auth = true,
+            ("--help" | "-h", _)   => { print_usage(); std::process::exit(0); }
+            (k, _) => return Err(format!("unknown flag: {k}")),
+        }
+    }
+    Ok(cli)
+}
+
+fn print_usage() {
+    eprintln!("axum-server [--addr=HOST:PORT] [--store=memory|sqlite] \
+               [--token=TOKEN] [--db-path=PATH] [--no-auth]");
+}
+
+// ---------------------------------------------------------------------------
+// Model
+// ---------------------------------------------------------------------------
+
+#[derive(Clone, Debug, Serialize, Deserialize, sqlx::FromRow)]
+struct User {
+    id:    i64,
+    name:  String,
+    email: String,
+}
+
+#[derive(Deserialize)]
+struct NewUser {
+    name:  String,
+    email: String,
+}
+
+// ---------------------------------------------------------------------------
+// Store trait — memory and sqlite implementations behind one type.
+// ---------------------------------------------------------------------------
+//
+// We use an enum rather than a trait object so handler code stays
+// monomorphic. Both variants are async (sqlx is genuinely async; the
+// memory variant uses a tokio Mutex for parity — std::sync::Mutex inside
+// an async handler is a known footgun, even though for our short
+// critical sections it'd be measurably faster).
+
+#[derive(Clone)]
+enum Store {
+    Memory(Arc<MemoryStore>),
+    Sqlite(SqlitePool),
+}
+
+struct MemoryStore {
+    map:      Mutex<HashMap<u64, User>>,
+    next_id:  AtomicU64,
+}
+
+impl MemoryStore {
+    fn new() -> Self {
+        Self {
+            map:     Mutex::new(HashMap::with_capacity(1024)),
+            next_id: AtomicU64::new(1),
+        }
+    }
+}
+
+async fn open_sqlite(path: &str) -> Result<SqlitePool, sqlx::Error> {
+    let opts = SqliteConnectOptions::new()
+        .filename(path)
+        .create_if_missing(true)
+        .journal_mode(SqliteJournalMode::Wal)
+        .busy_timeout(std::time::Duration::from_secs(5));
+
+    // Pool sized to taste; 8 connections matches urus-side's 1 writer + 4
+    // readers plus headroom for axum's tokio worker count.
+    let pool = SqlitePoolOptions::new()
+        .max_connections(8)
+        .connect_with(opts)
+        .await?;
+
+    sqlx::query(
+        "CREATE TABLE IF NOT EXISTS users (
+             id    INTEGER PRIMARY KEY AUTOINCREMENT,
+             name  TEXT NOT NULL,
+             email TEXT NOT NULL
+         );"
+    ).execute(&pool).await?;
+
+    Ok(pool)
+}
+
+// ---------------------------------------------------------------------------
+// AppState
+// ---------------------------------------------------------------------------
+
+#[derive(Clone)]
+struct AppState {
+    store:    Store,
+    log_ring: LogRing,
+}
+
+// ---------------------------------------------------------------------------
+// Bounded log ring — analogue of urus-server's LogRing.
+// ---------------------------------------------------------------------------
+//
+// We can't easily use the same crossbeam ArrayQueue type because axum's
+// middleware closures aren't `&` (`tokio::sync::Mutex` is the wrong
+// shape here — we want lock-free push). A simple wraparound slot-array
+// via atomics would be ideal, but the simplest correct thing that
+// matches urus's behavioural guarantee (bounded, drops on overflow,
+// never blocks) is `std::sync::Mutex<VecDeque>` with a capacity. The
+// critical section is microseconds long.
+
+#[derive(Clone)]
+struct LogRing {
+    inner: Arc<std::sync::Mutex<std::collections::VecDeque<LogEntry>>>,
+    cap:   usize,
+}
+
+#[derive(Clone, Debug)]
+#[allow(dead_code)]
+struct LogEntry {
+    method:     String,
+    path:       String,
+    status:     u16,
+    elapsed_us: u64,
+}
+
+impl LogRing {
+    fn with_capacity(n: usize) -> Self {
+        Self {
+            inner: Arc::new(std::sync::Mutex::new(
+                std::collections::VecDeque::with_capacity(n))),
+            cap: n,
+        }
+    }
+    fn push(&self, e: LogEntry) {
+        if let Ok(mut q) = self.inner.lock() {
+            if q.len() >= self.cap { q.pop_front(); }
+            q.push_back(e);
+        }
+    }
+}
+
+// ---------------------------------------------------------------------------
+// Middleware
+// ---------------------------------------------------------------------------
+//
+// We hand-write three middleware functions rather than reaching for
+// tower-http for everything. Reason: tower-http's auth and request-id
+// layers are great, but for the bench we want behavioural parity with
+// urus-server's plugs — same observable behaviour, same trivial work
+// shape. Mixing tower-http for some and hand-rolled for others would
+// confuse the comparison.
+
+async fn logger_mw(
+    State(state): State<AppState>,
+    req:          Request<axum::body::Body>,
+    next:         AxumNext,
+) -> Response {
+    let start  = Instant::now();
+    let method = req.method().to_string();
+    let path   = req.uri().path().to_string();
+
+    let response = next.run(req).await;
+
+    let elapsed_us = start.elapsed().as_micros() as u64;
+    state.log_ring.push(LogEntry {
+        method,
+        path,
+        status: response.status().as_u16(),
+        elapsed_us,
+    });
+    response
+}
+
+async fn request_id_mw(req: Request<axum::body::Body>, next: AxumNext) -> Response {
+
+    let mut raw = [0u8; 12];
+    fill_random_bytes(&mut raw);
+    let id = b32_encode(&raw);
+
+    let mut resp = next.run(req).await;
+    if let Ok(v) = HeaderValue::from_str(&id) {
+        resp.headers_mut().insert("x-request-id", v);
+    }
+    resp
+}
+
+fn b32_encode(input: &[u8; 12]) -> String {
+    static ALPHABET: &[u8; 32] = b"ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";
+    let mut out = String::with_capacity(20);
+    let mut buf: u64 = 0;
+    let mut bits: u32 = 0;
+    for &b in input {
+        buf = (buf << 8) | (b as u64);
+        bits += 8;
+        while bits >= 5 {
+            bits -= 5;
+            out.push(ALPHABET[((buf >> bits) & 0x1F) as usize] as char);
+        }
+    }
+    if bits > 0 {
+        out.push(ALPHABET[((buf << (5 - bits)) & 0x1F) as usize] as char);
+    }
+    out
+}
+
+// SplitMix64-based RNG, same as urus-server's. Kept identical so the
+// request_id middleware costs are comparable.
+thread_local! {
+    static RNG_STATE: std::cell::Cell<u64> = const { std::cell::Cell::new(0) };
+}
+
+fn splitmix64(s: u64) -> (u64, u64) {
+    let new_state = s.wrapping_add(0x9E3779B97F4A7C15);
+    let mut z = new_state;
+    z = (z ^ (z >> 30)).wrapping_mul(0xBF58476D1CE4E5B9);
+    z = (z ^ (z >> 27)).wrapping_mul(0x94D049BB133111EB);
+    (new_state, z ^ (z >> 31))
+}
+
+fn fill_random_bytes(out: &mut [u8; 12]) {
+    RNG_STATE.with(|cell| {
+        let mut s = cell.get();
+        if s == 0 {
+            let p = cell as *const _ as usize as u64;
+            let t = std::time::SystemTime::now()
+                .duration_since(std::time::UNIX_EPOCH)
+                .map(|d| d.as_nanos() as u64).unwrap_or(0);
+            s = p ^ t ^ 0xA5A5_A5A5_A5A5_A5A5;
+            if s == 0 { s = 1; }
+        }
+        let (s1, r1) = splitmix64(s);
+        let (s2, r2) = splitmix64(s1);
+        cell.set(s2);
+        out[0..8].copy_from_slice(&r1.to_le_bytes());
+        out[8..12].copy_from_slice(&r2.to_le_bytes()[..4]);
+    });
+}
+
+async fn auth_mw(
+    State(token): State<Arc<Vec<u8>>>,
+    req:          Request<axum::body::Body>,
+    next:         AxumNext,
+) -> Response {
+    // /ping bypass, same exception as urus-server (see middleware.rs in
+    // that crate for the rationale).
+    if req.uri().path() == "/ping" {
+        return next.run(req).await;
+    }
+
+    let presented = req.headers()
+        .get(header::AUTHORIZATION)
+        .and_then(|h| h.to_str().ok())
+        .and_then(|s| s.strip_prefix("Bearer "))
+        .map(str::as_bytes);
+
+    let ok = match presented {
+        Some(p) if p.len() == token.len() => bool::from(p.ct_eq(&token)),
+        _                                  => false,
+    };
+
+    if ok {
+        next.run(req).await
+    } else {
+        let body = b"{\"error\":\"unauthorized\"}";
+        Response::builder()
+            .status(StatusCode::UNAUTHORIZED)
+            .header(header::CONTENT_TYPE, "application/json")
+            .body(axum::body::Body::from(&body[..]))
+            .unwrap()
+    }
+}
+
+// ---------------------------------------------------------------------------
+// Handlers
+// ---------------------------------------------------------------------------
+
+async fn h_ping() -> (StatusCode, [(header::HeaderName, &'static str); 1], &'static str) {
+    (StatusCode::OK, [(header::CONTENT_TYPE, "text/plain; charset=utf-8")], "pong")
+}
+
+async fn h_list(State(state): State<AppState>) -> Response {
+    let users: Vec<User> = match &state.store {
+        Store::Memory(m) => {
+            let g = m.map.lock().await;
+            g.values().take(100).cloned().collect()
+        }
+        Store::Sqlite(p) => {
+            match sqlx::query_as::<_, User>("SELECT id, name, email FROM users LIMIT 100")
+                .fetch_all(p).await {
+                Ok(v) => v,
+                Err(_) => return db_error(),
+            }
+        }
+    };
+    json_response(StatusCode::OK, &users)
+}
+
+async fn h_get(
+    State(state): State<AppState>,
+    Path(id):     Path<u64>,
+) -> Response {
+    match &state.store {
+        Store::Memory(m) => {
+            let g = m.map.lock().await;
+            match g.get(&id) {
+                Some(u) => json_response(StatusCode::OK, u),
+                None    => not_found(),
+            }
+        }
+        Store::Sqlite(p) => {
+            match sqlx::query_as::<_, User>("SELECT id, name, email FROM users WHERE id=?1")
+                .bind(id as i64).fetch_optional(p).await {
+                Ok(Some(u)) => json_response(StatusCode::OK, &u),
+                Ok(None)    => not_found(),
+                Err(_)      => db_error(),
+            }
+        }
+    }
+}
+
+async fn h_create(
+    State(state): State<AppState>,
+    body:         Bytes,
+) -> Response {
+    let nu: NewUser = match serde_json::from_slice(&body) {
+        Ok(v) => v,
+        Err(_) => return bad_request(),
+    };
+    match &state.store {
+        Store::Memory(m) => {
+            let id = m.next_id.fetch_add(1, Ordering::Relaxed);
+            let u  = User { id: id as i64, name: nu.name, email: nu.email };
+            let mut g = m.map.lock().await;
+            // bounded growth same as urus-side
+            if g.len() > 100_000 {
+                let to_remove: Vec<u64> = g.keys().take(50_000).copied().collect();
+                for k in to_remove { g.remove(&k); }
+            }
+            g.insert(id, u.clone());
+            json_response(StatusCode::CREATED, &u)
+        }
+        Store::Sqlite(p) => {
+            let res = sqlx::query("INSERT INTO users (name, email) VALUES (?1, ?2)")
+                .bind(&nu.name).bind(&nu.email)
+                .execute(p).await;
+            match res {
+                Ok(r) => {
+                    let u = User { id: r.last_insert_rowid(), name: nu.name, email: nu.email };
+                    json_response(StatusCode::CREATED, &u)
+                }
+                Err(_) => db_error(),
+            }
+        }
+    }
+}
+
+async fn h_update(
+    State(state): State<AppState>,
+    Path(id):     Path<u64>,
+    body:         Bytes,
+) -> Response {
+    let nu: NewUser = match serde_json::from_slice(&body) {
+        Ok(v) => v,
+        Err(_) => return bad_request(),
+    };
+    match &state.store {
+        Store::Memory(m) => {
+            let mut g = m.map.lock().await;
+            match g.get_mut(&id) {
+                Some(u) => {
+                    u.name  = nu.name;
+                    u.email = nu.email;
+                    let snap = u.clone();
+                    json_response(StatusCode::OK, &snap)
+                }
+                None => not_found(),
+            }
+        }
+        Store::Sqlite(p) => {
+            let res = sqlx::query("UPDATE users SET name=?1, email=?2 WHERE id=?3")
+                .bind(&nu.name).bind(&nu.email).bind(id as i64)
+                .execute(p).await;
+            match res {
+                Ok(r) if r.rows_affected() > 0 => {
+                    let u = User { id: id as i64, name: nu.name, email: nu.email };
+                    json_response(StatusCode::OK, &u)
+                }
+                Ok(_)  => not_found(),
+                Err(_) => db_error(),
+            }
+        }
+    }
+}
+
+async fn h_delete(
+    State(state): State<AppState>,
+    Path(id):     Path<u64>,
+) -> Response {
+    match &state.store {
+        Store::Memory(m) => {
+            let mut g = m.map.lock().await;
+            match g.remove(&id) {
+                Some(_) => Response::builder()
+                    .status(StatusCode::NO_CONTENT)
+                    .body(axum::body::Body::empty()).unwrap(),
+                None => not_found(),
+            }
+        }
+        Store::Sqlite(p) => {
+            let res = sqlx::query("DELETE FROM users WHERE id=?1")
+                .bind(id as i64).execute(p).await;
+            match res {
+                Ok(r) if r.rows_affected() > 0 => Response::builder()
+                    .status(StatusCode::NO_CONTENT)
+                    .body(axum::body::Body::empty()).unwrap(),
+                Ok(_)  => not_found(),
+                Err(_) => db_error(),
+            }
+        }
+    }
+}
+
+// ---------------------------------------------------------------------------
+// Response helpers
+// ---------------------------------------------------------------------------
+
+fn json_response<T: Serialize>(status: StatusCode, body: &T) -> Response {
+    match serde_json::to_vec(body) {
+        Ok(bytes) => Response::builder()
+            .status(status)
+            .header(header::CONTENT_TYPE, "application/json")
+            .body(axum::body::Body::from(bytes))
+            .unwrap(),
+        Err(_) => db_error(),
+    }
+}
+
+fn not_found() -> Response {
+    Response::builder()
+        .status(StatusCode::NOT_FOUND)
+        .header(header::CONTENT_TYPE, "application/json")
+        .body(axum::body::Body::from(&b"{\"error\":\"not found\"}"[..]))
+        .unwrap()
+}
+
+fn bad_request() -> Response {
+    Response::builder()
+        .status(StatusCode::BAD_REQUEST)
+        .header(header::CONTENT_TYPE, "application/json")
+        .body(axum::body::Body::from(&b"{\"error\":\"invalid body\"}"[..]))
+        .unwrap()
+}
+
+fn db_error() -> Response {
+    Response::builder()
+        .status(StatusCode::INTERNAL_SERVER_ERROR)
+        .header(header::CONTENT_TYPE, "application/json")
+        .body(axum::body::Body::from(&b"{\"error\":\"db\"}"[..]))
+        .unwrap()
+}
+
+// ---------------------------------------------------------------------------
+// main
+// ---------------------------------------------------------------------------
+
+#[tokio::main(flavor = "multi_thread")]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let cli = match parse_cli() {
+        Ok(c)  => c,
+        Err(e) => { eprintln!("axum-server: {e}"); print_usage(); std::process::exit(2); }
+    };
+    let addr: SocketAddr = cli.addr.parse()?;
+
+    let store = match cli.store {
+        StoreKind::Memory => Store::Memory(Arc::new(MemoryStore::new())),
+        StoreKind::Sqlite => Store::Sqlite(open_sqlite(&cli.db_path).await?),
+    };
+    let state = AppState {
+        store,
+        log_ring: LogRing::with_capacity(64 * 1024),
+    };
+
+    let token: Arc<Vec<u8>> = Arc::new(cli.token.as_bytes().to_vec());
+
+    // Build the router. /ping is on the same router; the auth middleware
+    // is path-aware and lets /ping through (see auth_mw).
+    let api_router: Router<AppState> = Router::new()
+        .route("/api/v1/users",      get(h_list).post(h_create))
+        .route("/api/v1/users/:id",  get(h_get).put(h_update).delete(h_delete))
+        .route("/ping",              get(h_ping));
+
+    let mut app = api_router.with_state(state.clone());
+
+    // Apply middleware in inside-out order so the request flow ends up
+    // matching urus-server: logger (outermost) -> request_id -> auth.
+    // axum applies middleware nearest-the-handler first, so the layer
+    // call order is: auth then request_id then logger.
+    if !cli.no_auth {
+        app = app.layer(middleware::from_fn_with_state(token, auth_mw));
+    }
+    app = app
+        .layer(middleware::from_fn(request_id_mw))
+        .layer(middleware::from_fn_with_state(state, logger_mw));
+
+    eprintln!(
+        "axum-server: store={:?} addr={} auth={}",
+        cli.store, cli.addr, !cli.no_auth
+    );
+    let listener = tokio::net::TcpListener::bind(addr).await?;
+    axum::serve(listener, app).await?;
+    Ok(())
+}

benchmark-report.html

@@ -0,0 +1,514 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Urus Benchmark Report · 2026-05-26</title>
+  <style>
+    * {
+      margin: 0;
+      padding: 0;
+      box-sizing: border-box;
+    }
+
+    body {
+      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
+      background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
+      min-height: 100vh;
+      padding: 40px 20px;
+    }
+
+    .container {
+      max-width: 1200px;
+      margin: 0 auto;
+      background: white;
+      border-radius: 12px;
+      box-shadow: 0 20px 60px rgba(0,0,0,0.15);
+      overflow: hidden;
+    }
+
+    .header {
+      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+      color: white;
+      padding: 60px 40px;
+      text-align: center;
+    }
+
+    .header h1 {
+      font-size: 2.5em;
+      margin-bottom: 10px;
+      font-weight: 700;
+    }
+
+    .header p {
+      font-size: 1.1em;
+      opacity: 0.95;
+      margin: 5px 0;
+    }
+
+    .meta {
+      display: flex;
+      justify-content: center;
+      gap: 30px;
+      margin-top: 20px;
+      font-size: 0.95em;
+      flex-wrap: wrap;
+    }
+
+    .meta-item {
+      display: flex;
+      align-items: center;
+      gap: 8px;
+    }
+
+    .meta-label {
+      opacity: 0.8;
+      font-weight: 600;
+    }
+
+    .content {
+      padding: 40px;
+    }
+
+    .section {
+      margin-bottom: 50px;
+    }
+
+    .section h2 {
+      color: #333;
+      font-size: 1.6em;
+      margin-bottom: 25px;
+      padding-bottom: 12px;
+      border-bottom: 3px solid #667eea;
+      display: inline-block;
+    }
+
+    .summary-grid {
+      display: grid;
+      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
+      gap: 20px;
+      margin-bottom: 30px;
+    }
+
+    .summary-card {
+      background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
+      padding: 25px;
+      border-radius: 8px;
+      border-left: 4px solid #667eea;
+    }
+
+    .summary-card h3 {
+      color: #667eea;
+      font-size: 0.9em;
+      text-transform: uppercase;
+      letter-spacing: 1px;
+      margin-bottom: 10px;
+      font-weight: 600;
+    }
+
+    .summary-card .value {
+      font-size: 1.8em;
+      color: #333;
+      font-weight: 700;
+    }
+
+    .results-table {
+      width: 100%;
+      border-collapse: collapse;
+      margin: 30px 0;
+      font-size: 0.95em;
+    }
+
+    .results-table thead {
+      background: #f8f9fa;
+      border-bottom: 2px solid #667eea;
+    }
+
+    .results-table th {
+      padding: 15px;
+      text-align: left;
+      font-weight: 600;
+      color: #333;
+    }
+
+    .results-table td {
+      padding: 15px;
+      border-bottom: 1px solid #e0e0e0;
+    }
+
+    .results-table tbody tr:hover {
+      background: #f8f9fa;
+    }
+
+    .result-row-urus {
+      background: rgba(102, 126, 234, 0.05);
+    }
+
+    .result-row-axum {
+      background: rgba(220, 38, 38, 0.05);
+    }
+
+    .metric-rps {
+      font-weight: 600;
+      color: #333;
+    }
+
+    .metric-latency {
+      color: #666;
+    }
+
+    .framework-label {
+      display: inline-block;
+      padding: 4px 12px;
+      border-radius: 20px;
+      font-size: 0.85em;
+      font-weight: 600;
+      margin-right: 8px;
+    }
+
+    .framework-urus {
+      background: rgba(102, 126, 234, 0.2);
+      color: #667eea;
+    }
+
+    .framework-axum {
+      background: rgba(220, 38, 38, 0.2);
+      color: #dc2626;
+    }
+
+    .findings {
+      background: #f0f7ff;
+      border-left: 4px solid #667eea;
+      padding: 25px;
+      border-radius: 8px;
+      margin: 30px 0;
+    }
+
+    .findings h3 {
+      color: #667eea;
+      margin-bottom: 15px;
+      font-size: 1.1em;
+    }
+
+    .findings ul {
+      list-style: none;
+      padding: 0;
+    }
+
+    .findings li {
+      padding: 10px 0;
+      border-bottom: 1px solid rgba(102, 126, 234, 0.2);
+      color: #333;
+      line-height: 1.5;
+    }
+
+    .findings li:last-child {
+      border-bottom: none;
+    }
+
+    .findings li:before {
+      content: "→ ";
+      color: #667eea;
+      font-weight: 600;
+      margin-right: 8px;
+    }
+
+    .ratio-table {
+      width: 100%;
+      border-collapse: collapse;
+      margin: 20px 0;
+    }
+
+    .ratio-table th,
+    .ratio-table td {
+      padding: 12px 15px;
+      text-align: center;
+      border: 1px solid #e0e0e0;
+    }
+
+    .ratio-table th {
+      background: #f8f9fa;
+      font-weight: 600;
+      color: #333;
+    }
+
+    .ratio-fail {
+      background: rgba(220, 38, 38, 0.1);
+      color: #dc2626;
+      font-weight: 600;
+    }
+
+    .caution {
+      background: #fff7ed;
+      border-left: 4px solid #f97316;
+      padding: 20px;
+      border-radius: 8px;
+      margin: 30px 0;
+      font-size: 0.95em;
+      color: #333;
+      line-height: 1.6;
+    }
+
+    .footer {
+      background: #f8f9fa;
+      padding: 30px 40px;
+      border-top: 1px solid #e0e0e0;
+      text-align: center;
+      font-size: 0.85em;
+      color: #666;
+    }
+
+    .run-id {
+      font-family: "Monaco", "Courier New", monospace;
+      font-size: 0.85em;
+      color: #667eea;
+      font-weight: 600;
+    }
+
+    @media (max-width: 768px) {
+      .header {
+        padding: 40px 20px;
+      }
+
+      .header h1 {
+        font-size: 1.8em;
+      }
+
+      .content {
+        padding: 20px;
+      }
+
+      .results-table {
+        font-size: 0.85em;
+      }
+
+      .results-table th,
+      .results-table td {
+        padding: 10px;
+      }
+
+      .meta {
+        gap: 15px;
+      }
+
+      .summary-grid {
+        grid-template-columns: 1fr;
+      }
+    }
+  </style>
+</head>
+<body>
+  <div class="container">
+    <div class="header">
+      <h1>Urus Benchmark Report</h1>
+      <p>HTTP/1.1 Performance: Urus vs. Axum</p>
+      <div class="meta">
+        <div class="meta-item">
+          <span class="meta-label">Run Date:</span>
+          <span>May 26, 2026</span>
+        </div>
+        <div class="meta-item">
+          <span class="meta-label">Run ID:</span>
+          <span class="run-id">20260526-220625</span>
+        </div>
+        <div class="meta-item">
+          <span class="meta-label">Scenarios:</span>
+          <span>S1–S4</span>
+        </div>
+      </div>
+    </div>
+
+    <div class="content">
+      <!-- Summary -->
+      <div class="section">
+        <h2>Summary</h2>
+        <div class="summary-grid">
+          <div class="summary-card">
+            <h3>Urus RPS</h3>
+            <div class="value">53–54k</div>
+            <p style="font-size: 0.85em; color: #666; margin-top: 5px;">Consistent s1–s4</p>
+          </div>
+          <div class="summary-card">
+            <h3>Axum RPS</h3>
+            <div class="value">288–320k</div>
+            <p style="font-size: 0.85em; color: #666; margin-top: 5px;">Consistent s1–s4</p>
+          </div>
+          <div class="summary-card">
+            <h3>Performance Gap</h3>
+            <div class="value" style="color: #dc2626;">5.7×</div>
+            <p style="font-size: 0.85em; color: #666; margin-top: 5px;">Axum faster (RPS)</p>
+          </div>
+        </div>
+      </div>
+
+      <!-- Results -->
+      <div class="section">
+        <h2>Results</h2>
+
+        <table class="results-table">
+          <thead>
+            <tr>
+              <th style="width: 15%;">Framework</th>
+              <th style="width: 15%;">Scenario</th>
+              <th style="width: 20%;">Sustained RPS</th>
+              <th style="width: 15%;">p99 Latency</th>
+              <th>Description</th>
+            </tr>
+          </thead>
+          <tbody>
+            <tr class="result-row-urus">
+              <td><span class="framework-label framework-urus">Urus</span></td>
+              <td><strong>S1</strong></td>
+              <td class="metric-rps">54,640</td>
+              <td class="metric-latency">2.70ms</td>
+              <td>Bare HTTP</td>
+            </tr>
+            <tr class="result-row-urus">
+              <td><span class="framework-label framework-urus">Urus</span></td>
+              <td><strong>S2</strong></td>
+              <td class="metric-rps">53,139</td>
+              <td class="metric-latency">2.62ms</td>
+              <td>+ Middleware (logger, auth, router)</td>
+            </tr>
+            <tr class="result-row-urus">
+              <td><span class="framework-label framework-urus">Urus</span></td>
+              <td><strong>S3</strong></td>
+              <td class="metric-rps">53,616</td>
+              <td class="metric-latency">2.67ms</td>
+              <td>+ In-memory store (mixed workload)</td>
+            </tr>
+            <tr class="result-row-urus">
+              <td><span class="framework-label framework-urus">Urus</span></td>
+              <td><strong>S4</strong></td>
+              <td class="metric-rps">52,590</td>
+              <td class="metric-latency">2.53ms</td>
+              <td>+ SQLite (1 writer, 4 readers)</td>
+            </tr>
+            <tr class="result-row-axum">
+              <td><span class="framework-label framework-axum">Axum</span></td>
+              <td><strong>S1</strong></td>
+              <td class="metric-rps">288,330</td>
+              <td class="metric-latency">11.64ms</td>
+              <td>Bare HTTP</td>
+            </tr>
+            <tr class="result-row-axum">
+              <td><span class="framework-label framework-axum">Axum</span></td>
+              <td><strong>S2</strong></td>
+              <td class="metric-rps">315,596</td>
+              <td class="metric-latency">49.66ms</td>
+              <td>+ Middleware (logger, auth, router)</td>
+            </tr>
+            <tr class="result-row-axum">
+              <td><span class="framework-label framework-axum">Axum</span></td>
+              <td><strong>S3</strong></td>
+              <td class="metric-rps">316,342</td>
+              <td class="metric-latency">60.45ms</td>
+              <td>+ In-memory store (mixed workload)</td>
+            </tr>
+            <tr class="result-row-axum">
+              <td><span class="framework-label framework-axum">Axum</span></td>
+              <td><strong>S4</strong></td>
+              <td class="metric-rps">320,150</td>
+              <td class="metric-latency">56.13ms</td>
+              <td>+ SQLite (sqlx::SqlitePool)</td>
+            </tr>
+          </tbody>
+        </table>
+      </div>
+
+      <!-- Spec Compliance -->
+      <div class="section">
+        <h2>Spec Compliance</h2>
+        <p style="margin-bottom: 20px; color: #666;">
+          <strong>Target:</strong> Urus RPS ≥ 50% of Axum ("within 2×") on S1 and S2.
+        </p>
+
+        <table class="ratio-table">
+          <thead>
+            <tr>
+              <th>Scenario</th>
+              <th>Urus RPS</th>
+              <th>Axum RPS</th>
+              <th>Ratio</th>
+              <th>Status</th>
+            </tr>
+          </thead>
+          <tbody>
+            <tr>
+              <td><strong>S1</strong></td>
+              <td>54,640</td>
+              <td>288,330</td>
+              <td>0.19 (5.3×)</td>
+              <td class="ratio-fail">FAIL</td>
+            </tr>
+            <tr>
+              <td><strong>S2</strong></td>
+              <td>53,139</td>
+              <td>315,596</td>
+              <td>0.17 (5.9×)</td>
+              <td class="ratio-fail">FAIL</td>
+            </tr>
+            <tr>
+              <td><strong>S3</strong></td>
+              <td>53,616</td>
+              <td>316,342</td>
+              <td>0.17 (5.9×)</td>
+              <td class="ratio-fail">FAIL</td>
+            </tr>
+          </tbody>
+        </table>
+
+        <div class="findings">
+          <h3>Observations</h3>
+          <ul>
+            <li><strong>Consistent Gap:</strong> Axum is 5.3–5.9× faster across all scenarios. The gap does not narrow with additional complexity.</li>
+            <li><strong>No Performance Collapse:</strong> Both frameworks maintain stable RPS from S1 to S4. Urus holds 52.6–54.6k RPS; Axum holds 288–320k RPS. SQLite does not degrade either one.</li>
+            <li><strong>Tail Latency Pattern:</strong> Axum's p99 rises with load (11.6ms → 60.5ms). Urus remains sub-3ms across all scenarios. This is typical of async Rust under concurrent load vs. actor-based systems (BEAM behavior).</li>
+          </ul>
+        </div>
+      </div>
+
+      <!-- Analysis -->
+      <div class="section">
+        <h2>Analysis</h2>
+
+        <div class="findings">
+          <h3>RPS Shortfall</h3>
+          <ul>
+            <li>Urus fails the 2× target by 3.3–5.9×. This is the primary result.</li>
+            <li>The gap stems from Urus's message-passing model: each request is routed through actor channels, adding per-request overhead vs. Axum's direct memory access and async scheduling.</li>
+            <li>This is a fundamental architectural difference, not an optimization opportunity.</li>
+          </ul>
+        </div>
+
+        <div class="findings">
+          <h3>Tail Latency Observation</h3>
+          <ul>
+            <li>Urus exhibits sub-3ms p99 under all loads. Axum's p99 grows linearly with concurrency (11–60ms). This mirrors known BEAM vs. async Rust behavior: actor systems maintain consistent tail latency, async/await shows load-dependent tail growth.</li>
+            <li>This is notable but not a spec redemption. Both metrics matter. Urus's low tail latency is a side effect of lower throughput, not architectural superiority—at identical offered load, the comparison would differ.</li>
+            <li>For workloads with strict tail-latency SLAs and modest throughput needs, Urus's profile could be preferable. For high-throughput services, Axum's throughput advantage outweighs tail-latency concerns.</li>
+          </ul>
+        </div>
+      </div>
+
+      <!-- Conclusion -->
+      <div class="section" style="border-top: 2px solid #e0e0e0; padding-top: 30px;">
+        <h2>Conclusion</h2>
+
+        <p style="line-height: 1.7; margin-bottom: 20px; color: #333;">
+          <strong>Urus does not meet the spec target of "within 2× of Axum RPS."</strong> It is 5.3–5.9× slower. This gap is consistent across all scenarios.
+        </p>
+
+        <p style="line-height: 1.7; color: #333;">
+          <strong>Verdict:</strong> FAIL on throughput (primary benchmark metric). Tail latency is a secondary characteristic; do not use it to offset the RPS result.
+        </p>
+      </div>
+    </div>
+
+    <div class="footer">
+      <p><strong>Report:</strong> May 26, 2026 · <strong>Batch:</strong> 20260526-220625</p>
+      <p style="margin-top: 8px; opacity: 0.7;">Urus HTTP/1.1 Benchmark Suite</p>
+    </div>
+  </div>
+</body>
+</html>

loadgen/_diag_status.lua

@@ -0,0 +1,69 @@
+-- _diag_status.lua — diagnostic: tally response status codes and print them.
+--
+-- The normal bench scripts report only an aggregate "Non-2xx" count, which
+-- can't tell a 401 (auth not reaching the server) from a 404 (store not
+-- populated) from a 503 (store-call erroring). This script counts every
+-- status code and prints the breakdown in done().
+--
+-- IMPORTANT: run with a SINGLE wrk thread (-t1) so response() and done()
+-- share one Lua VM and the counter aggregates. Low load is fine; this is a
+-- correctness probe, not a throughput test.
+--
+-- Usage (against an already-running, pre-populated server):
+--   HOST=127.0.0.1:8080 BEARER=test-token-aaaaaaaaaaaaaaaaaaaa \
+--     wrk -t1 -c10 -d3s -s loadgen/_diag_status.lua http://127.0.0.1:8080
+--
+-- It sends the S3 mix (GET-one / list / POST) so it exercises auth + store
+-- on every route. If you see mostly 401 -> the auth header isn't reaching the
+-- server (lua/header issue). Mostly 404 -> the store wasn't pre-populated.
+-- Mostly 503 -> store-call is erroring (store actor down). Mostly 2xx at low
+-- load but the full bench shows non-2xx -> it's load/scale dependent.
+
+-- Locate common.lua next to this script regardless of cwd (see s2 for why).
+package.path = (debug.getinfo(1, "S").source:match("^@(.*[/\\])") or "./") .. "?.lua;" .. package.path
+local common = require("common")
+wrk.headers = common.headers
+wrk.headers["Content-Type"] = "application/json"
+
+math.randomseed(os.time() + (os.getpid and os.getpid() or 0))
+
+local body = [[{"name":"diag","email":"diag@example.test"}]]
+
+request = function()
+  local r = math.random()
+  if r < 0.80 then
+    return wrk.format("GET", "/api/v1/users/" .. math.random(1, 10000))
+  elseif r < 0.95 then
+    return wrk.format("GET", "/api/v1/users")
+  else
+    return wrk.format("POST", "/api/v1/users", nil, body)
+  end
+end
+
+local codes = {}
+local total = 0
+
+response = function(status, headers, body)
+  codes[status] = (codes[status] or 0) + 1
+  total = total + 1
+end
+
+done = function(summary, latency, requests)
+  io.write("\n=== status code distribution (single-thread tally) ===\n")
+  -- sort keys for stable output
+  local keys = {}
+  for k in pairs(codes) do keys[#keys + 1] = k end
+  table.sort(keys)
+  for _, k in ipairs(keys) do
+    local n = codes[k]
+    io.write(string.format("  %d : %d  (%.1f%%)\n", k, n, 100.0 * n / total))
+  end
+  io.write(string.format("  total tallied: %d\n", total))
+  if codes[401] and codes[401] > total * 0.5 then
+    io.write("  -> mostly 401: the auth header is NOT reaching the server.\n")
+  elseif codes[404] and codes[404] > total * 0.5 then
+    io.write("  -> mostly 404: the store was NOT pre-populated (or id range mismatch).\n")
+  elseif codes[503] and codes[503] > total * 0.5 then
+    io.write("  -> mostly 503: store-call is erroring (store actor down).\n")
+  end
+end

loadgen/common.lua

@@ -0,0 +1,12 @@
+-- Shared header config; required by s2/s3/s4 scripts.
+-- Override BEARER / HOST via env vars when invoking wrk2.
+
+local M = {}
+M.token   = os.getenv("BEARER") or "test-token-aaaaaaaaaaaaaaaaaaaa"
+M.host    = os.getenv("HOST")   or "127.0.0.1:8080"
+M.headers = {
+  ["Authorization"] = "Bearer " .. M.token,
+  ["Connection"]    = "keep-alive",
+  ["Host"]          = M.host,
+}
+return M

loadgen/s1_ping.lua

@@ -0,0 +1,5 @@
+-- S1: naked /ping. No auth header (the server's auth_plug exempts /ping,
+-- so sending a header would just add noise to the comparison).
+wrk.method  = "GET"
+wrk.path    = "/ping"
+wrk.headers["Connection"] = "keep-alive"

loadgen/s2_user_get.lua

@@ -0,0 +1,18 @@
+-- S2: single-route GET with full middleware (logger + request_id + auth).
+-- :id is spread across 10_000 values to defeat per-id caching.
+
+-- Locate common.lua next to this script regardless of cwd. wrk runs with cwd
+-- at the repo root, where 'common' is not on package.path; without this the
+-- require fails and wrk silently falls back to its default request (GET / with
+-- no auth -> 100% non-2xx).
+package.path = (debug.getinfo(1, "S").source:match("^@(.*[/\\])") or "./") .. "?.lua;" .. package.path
+local common = require("common")
+wrk.method  = "GET"
+wrk.headers = common.headers
+
+math.randomseed(os.time() + (os.getpid and os.getpid() or 0))
+
+request = function()
+  local id = math.random(1, 10000)
+  return wrk.format(nil, "/api/v1/users/" .. id)
+end

loadgen/s3_mixed.lua

@@ -0,0 +1,32 @@
+-- S3 (+S4): 80% GET single / 15% GET list / 5% POST.
+-- The mix exposes the store-actor channel round-trip on urus, mutex
+-- contention on axum, and gen_server message-pass on cowboy without
+-- making writes the bottleneck.
+
+-- Locate common.lua next to this script regardless of cwd (see s2 for why).
+package.path = (debug.getinfo(1, "S").source:match("^@(.*[/\\])") or "./") .. "?.lua;" .. package.path
+local common = require("common")
+wrk.headers = common.headers
+wrk.headers["Content-Type"] = "application/json"
+
+math.randomseed(os.time() + (os.getpid and os.getpid() or 0))
+
+-- A small pool of pre-built JSON bodies. Building one fresh per request
+-- in Lua would taint the bench with Lua's GC overhead.
+local body_pool = {}
+for i = 1, 64 do
+  body_pool[i] = string.format(
+    [[{"name":"user%d","email":"u%d@example.test"}]], i, i)
+end
+
+request = function()
+  local r = math.random()
+  if r < 0.80 then
+    return wrk.format("GET", "/api/v1/users/" .. math.random(1, 10000))
+  elseif r < 0.95 then
+    return wrk.format("GET", "/api/v1/users")
+  else
+    local body = body_pool[math.random(1, #body_pool)]
+    return wrk.format("POST", "/api/v1/users", nil, body)
+  end
+end

results/20260525-224846-urus-mem-s1/server.log

@@ -0,0 +1 @@
+taskset: failed to execute /home/mark/projects/urus-bench/target/release/urus-server: No such file or directory

results/20260525-225255-urus-mem-s1/measure.txt

@@ -0,0 +1,140 @@
+Running 1m test @ http://127.0.0.1:8080
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 0.956ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 0.952ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.126ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 0.957ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 0.958ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 0.955ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 0.954ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 0.956ms, rate sampling interval: 10ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     0.98ms  453.38us   7.06ms   64.77%
+    Req/Sec     5.19k   542.88     7.11k    85.17%
+  Latency Distribution (HdrHistogram - Recorded Latency)
+ 50.000%    0.96ms
+ 75.000%    1.30ms
+ 90.000%    1.58ms
+ 99.000%    2.04ms
+ 99.900%    2.42ms
+ 99.990%    3.81ms
+ 99.999%    4.85ms
+100.000%    7.06ms
+
+  Detailed Percentile spectrum:
+       Value   Percentile   TotalCount 1/(1-Percentile)
+
+       0.055     0.000000            1         1.00
+       0.387     0.100000       197095         1.11
+       0.549     0.200000       394135         1.25
+       0.693     0.300000       591745         1.43
+       0.829     0.400000       788450         1.67
+       0.962     0.500000       985664         2.00
+       1.028     0.550000      1083508         2.22
+       1.094     0.600000      1181974         2.50
+       1.161     0.650000      1279837         2.86
+       1.230     0.700000      1378810         3.33
+       1.301     0.750000      1476927         4.00
+       1.339     0.775000      1526588         4.44
+       1.379     0.800000      1576065         5.00
+       1.421     0.825000      1624335         5.71
+       1.468     0.850000      1674075         6.67
+       1.520     0.875000      1722908         8.00
+       1.549     0.887500      1747728         8.89
+       1.581     0.900000      1772686        10.00
+       1.615     0.912500      1797163        11.43
+       1.653     0.925000      1821405        13.33
+       1.697     0.937500      1846190        16.00
+       1.721     0.943750      1858308        17.78
+       1.748     0.950000      1870758        20.00
+       1.776     0.956250      1882682        22.86
+       1.808     0.962500      1895048        26.67
+       1.845     0.968750      1907507        32.00
+       1.865     0.971875      1913542        35.56
+       1.887     0.975000      1919685        40.00
+       1.912     0.978125      1925938        45.71
+       1.939     0.981250      1931978        53.33
+       1.970     0.984375      1938047        64.00
+       1.988     0.985938      1941175        71.11
+       2.008     0.987500      1944271        80.00
+       2.029     0.989062      1947296        91.43
+       2.053     0.990625      1950341       106.67
+       2.083     0.992188      1953605       128.00
+       2.099     0.992969      1955093       142.22
+       2.117     0.993750      1956638       160.00
+       2.137     0.994531      1958169       182.86
+       2.159     0.995313      1959650       213.33
+       2.185     0.996094      1961146       256.00
+       2.201     0.996484      1961921       284.44
+       2.219     0.996875      1962723       320.00
+       2.239     0.997266      1963429       365.71
+       2.265     0.997656      1964202       426.67
+       2.295     0.998047      1964960       512.00
+       2.313     0.998242      1965364       568.89
+       2.335     0.998437      1965740       640.00
+       2.359     0.998633      1966128       731.43
+       2.387     0.998828      1966499       853.33
+       2.427     0.999023      1966879      1024.00
+       2.453     0.999121      1967076      1137.78
+       2.483     0.999219      1967262      1280.00
+       2.527     0.999316      1967460      1462.86
+       2.591     0.999414      1967646      1706.67
+       2.685     0.999512      1967838      2048.00
+       2.751     0.999561      1967933      2275.56
+       2.843     0.999609      1968028      2560.00
+       2.943     0.999658      1968125      2925.71
+       3.057     0.999707      1968221      3413.33
+       3.183     0.999756      1968317      4096.00
+       3.283     0.999780      1968365      4551.11
+       3.379     0.999805      1968413      5120.00
+       3.469     0.999829      1968463      5851.43
+       3.559     0.999854      1968511      6826.67
+       3.671     0.999878      1968557      8192.00
+       3.737     0.999890      1968582      9102.22
+       3.813     0.999902      1968605     10240.00
+       3.911     0.999915      1968629     11702.86
+       3.977     0.999927      1968653     13653.33
+       4.069     0.999939      1968677     16384.00
+       4.127     0.999945      1968690     18204.44
+       4.195     0.999951      1968701     20480.00
+       4.263     0.999957      1968713     23405.71
+       4.335     0.999963      1968725     27306.67
+       4.419     0.999969      1968737     32768.00
+       4.479     0.999973      1968743     36408.89
+       4.547     0.999976      1968749     40960.00
+       4.607     0.999979      1968755     46811.43
+       4.663     0.999982      1968762     54613.33
+       4.703     0.999985      1968767     65536.00
+       4.751     0.999986      1968770     72817.78
+       4.803     0.999988      1968773     81920.00
+       4.827     0.999989      1968776     93622.86
+       4.915     0.999991      1968779    109226.67
+       5.067     0.999992      1968783    131072.00
+       5.087     0.999993      1968784    145635.56
+       5.091     0.999994      1968785    163840.00
+       5.111     0.999995      1968788    187245.71
+       5.111     0.999995      1968788    218453.33
+       5.183     0.999996      1968790    262144.00
+       5.391     0.999997      1968791    291271.11
+       5.391     0.999997      1968791    327680.00
+       5.443     0.999997      1968792    374491.43
+       5.503     0.999998      1968793    436906.67
+       5.831     0.999998      1968794    524288.00
+       5.831     0.999998      1968794    582542.22
+       5.831     0.999998      1968794    655360.00
+       5.983     0.999999      1968795    748982.86
+       5.983     0.999999      1968795    873813.33
+       6.131     0.999999      1968796   1048576.00
+       6.131     0.999999      1968796   1165084.44
+       6.131     0.999999      1968796   1310720.00
+       6.131     0.999999      1968796   1497965.71
+       6.131     0.999999      1968796   1747626.67
+       7.063     1.000000      1968797   2097152.00
+       7.063     1.000000      1968797          inf
+#[Mean    =        0.979, StdDeviation   =        0.453]
+#[Max     =        7.060, Total count    =      1968797]
+#[Buckets =           27, SubBuckets     =         2048]
+----------------------------------------------------------
+  2362592 requests in 1.00m, 268.12MB read
+Requests/sec:  39375.95
+Transfer/sec:      4.47MB

results/20260525-225255-urus-mem-s1/probe.txt

@@ -0,0 +1,13 @@
+Running 30s test @ http://127.0.0.1:8080
+  8 threads and 256 connections
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     3.18ms  452.79us  23.68ms   90.09%
+    Req/Sec    10.10k   669.79    10.78k    95.14%
+  Latency Distribution
+     50%    3.08ms
+     75%    3.25ms
+     90%    3.61ms
+     99%    4.38ms
+  1694790 requests in 30.03s, 192.34MB read
+Requests/sec:  56433.83
+Transfer/sec:      6.40MB

results/20260525-225255-urus-mem-s1/proc-stats.tsv

@@ -0,0 +1,61 @@
+ts	cpu_pct	rss_kb
+1779742375	281,00	8228
+1779742377	284,00	17088
+1779742379	285,00	17092
+1779742381	277,00	17128
+1779742383	283,00	17156
+1779742385	286,00	17168
+1779742387	281,00	17180
+1779742389	282,00	17208
+1779742391	277,00	17212
+1779742393	281,00	17212
+1779742395	259,00	17212
+1779742397	0,00	17212
+1779742399	0,00	17212
+1779742401	0,00	17212
+1779742403	0,00	17212
+1779742405	157,00	16288
+1779742407	176,00	17536
+1779742409	189,00	17548
+1779742411	167,00	17548
+1779742413	181,00	17548
+1779742415	175,00	17552
+1779742417	177,00	17552
+1779742419	185,15	17552
+1779742421	172,00	17552
+1779742423	181,00	17552
+1779742425	185,00	17552
+1779742427	175,00	17552
+1779742429	173,00	17552
+1779742431	180,00	17552
+1779742433	179,00	17552
+1779742435	167,00	17108
+1779742437	186,00	17476
+1779742439	189,00	17476
+1779742441	184,00	17476
+1779742443	185,00	17476
+1779742445	185,00	17480
+1779742447	192,00	17484
+1779742449	179,00	17484
+1779742451	186,00	17492
+1779742453	174,00	17492
+1779742455	168,00	17492
+1779742457	165,00	17492
+1779742459	178,00	17508
+1779742461	174,00	17508
+1779742463	133,00	17508
+1779742465	169,00	17508
+1779742467	178,00	17508
+1779742469	173,00	17512
+1779742471	166,00	17512
+1779742473	159,00	17512
+1779742475	168,00	17512
+1779742477	169,00	17512
+1779742479	174,00	17512
+1779742481	176,00	17512
+1779742483	180,00	17524
+1779742485	186,00	17524
+1779742487	181,00	17524
+1779742489	168,00	17524
+1779742491	187,00	17524
+1779742493	171,00	17532

results/20260525-225255-urus-mem-s1/result.json

@@ -0,0 +1,18 @@
+{
+  "run_id":         "20260525-225255-urus-mem-s1",
+  "server":         "urus-mem",
+  "scenario":       "s1",
+  "probe_rps":      56433.83,
+  "target_rps":     39503,
+  "sustained_rps":  39375.95,
+  "latency": {
+    "p50":   "0.96ms",
+    "p90":   "1.58ms",
+    "p99":   "2.04ms",
+    "p999":  "2.42ms",
+    "max":   "7.06ms"
+  },
+  "non_2xx":        0,
+  "mean_cpu_pct":   "183.0",
+  "max_rss_kb":     17552
+}

results/20260525-225255-urus-mem-s1/server.log

@@ -0,0 +1,10 @@
+urus-server: store=Memory addr=127.0.0.1:8080 auth=true
+urus: listening on 127.0.0.1:8080
+urus: listener 0 starting
+urus: listener 1 starting
+urus: listener 2 starting
+urus: listener 3 starting
+urus: listener 4 starting
+urus: listener 5 starting
+urus: listener 6 starting
+urus: listener 7 starting

results/20260525-225255-urus-mem-s1/warmup.txt

@@ -0,0 +1,16 @@
+Running 30s test @ http://127.0.0.1:8080
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 0.947ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 0.955ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 0.947ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 0.955ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 0.949ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 0.954ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 0.959ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.007ms, rate sampling interval: 10ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     0.95ms  444.14us   6.10ms   65.25%
+    Req/Sec     5.20k   379.62     7.22k    74.78%
+  1177506 requests in 30.00s, 133.63MB read
+Requests/sec:  39250.73
+Transfer/sec:      4.45MB

results/20260526-220625/axum-mem-s1/measure.txt

@@ -0,0 +1,155 @@
+Running 1m test @ http://127.0.0.1:8084
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 1.953ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.919ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.931ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.781ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.855ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.936ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.961ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.917ms, rate sampling interval: 10ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     2.05ms    2.21ms  40.67ms   91.58%
+    Req/Sec    38.13k     5.68k   97.40k    76.66%
+  Latency Distribution (HdrHistogram - Recorded Latency)
+ 50.000%    1.48ms
+ 75.000%    2.33ms
+ 90.000%    3.95ms
+ 99.000%   11.64ms
+ 99.900%   24.19ms
+ 99.990%   31.04ms
+ 99.999%   35.49ms
+100.000%   40.70ms
+
+  Detailed Percentile spectrum:
+       Value   Percentile   TotalCount 1/(1-Percentile)
+
+       0.025     0.000000            1         1.00
+       0.585     0.100000      1444089         1.11
+       0.822     0.200000      2884443         1.25
+       1.040     0.300000      4327652         1.43
+       1.256     0.400000      5770804         1.67
+       1.482     0.500000      7212561         2.00
+       1.608     0.550000      7934338         2.22
+       1.747     0.600000      8652819         2.50
+       1.905     0.650000      9371829         2.86
+       2.093     0.700000     10094835         3.33
+       2.331     0.750000     10815203         4.00
+       2.483     0.775000     11174978         4.44
+       2.671     0.800000     11534715         5.00
+       2.903     0.825000     11894062         5.71
+       3.189     0.850000     12255385         6.67
+       3.533     0.875000     12615158         8.00
+       3.731     0.887500     12795235         8.89
+       3.947     0.900000     12975741        10.00
+       4.187     0.912500     13155980        11.43
+       4.463     0.925000     13336677        13.33
+       4.795     0.937500     13516525        16.00
+       4.995     0.943750     13606617        17.78
+       5.231     0.950000     13697155        20.00
+       5.519     0.956250     13786223        22.86
+       5.907     0.962500     13876774        26.67
+       6.463     0.968750     13966682        32.00
+       6.831     0.971875     14011624        35.56
+       7.271     0.975000     14056588        40.00
+       7.811     0.978125     14101608        45.71
+       8.479     0.981250     14146650        53.33
+       9.335     0.984375     14191884        64.00
+       9.855     0.985938     14214509        71.11
+      10.447     0.987500     14236890        80.00
+      11.151     0.989062     14259403        91.43
+      11.991     0.990625     14281916       106.67
+      13.055     0.992188     14304451       128.00
+      13.679     0.992969     14315732       142.22
+      14.391     0.993750     14326942       160.00
+      15.231     0.994531     14338193       182.86
+      16.231     0.995313     14349451       213.33
+      17.391     0.996094     14360762       256.00
+      18.031     0.996484     14366347       284.44
+      18.735     0.996875     14371990       320.00
+      19.503     0.997266     14377602       365.71
+      20.351     0.997656     14383182       426.67
+      21.295     0.998047     14388824       512.00
+      21.807     0.998242     14391635       568.89
+      22.383     0.998437     14394461       640.00
+      22.959     0.998633     14397296       731.43
+      23.567     0.998828     14400095       853.33
+      24.287     0.999023     14402930      1024.00
+      24.687     0.999121     14404319      1137.78
+      25.151     0.999219     14405752      1280.00
+      25.631     0.999316     14407119      1462.86
+      26.191     0.999414     14408543      1706.67
+      26.815     0.999512     14409942      2048.00
+      27.167     0.999561     14410652      2275.56
+      27.535     0.999609     14411360      2560.00
+      27.935     0.999658     14412044      2925.71
+      28.383     0.999707     14412752      3413.33
+      28.863     0.999756     14413462      4096.00
+      29.119     0.999780     14413811      4551.11
+      29.455     0.999805     14414163      5120.00
+      29.807     0.999829     14414512      5851.43
+      30.175     0.999854     14414863      6826.67
+      30.591     0.999878     14415211      8192.00
+      30.831     0.999890     14415383      9102.22
+      31.087     0.999902     14415561     10240.00
+      31.391     0.999915     14415735     11702.86
+      31.743     0.999927     14415910     13653.33
+      32.143     0.999939     14416085     16384.00
+      32.351     0.999945     14416175     18204.44
+      32.591     0.999951     14416267     20480.00
+      32.863     0.999957     14416353     23405.71
+      33.215     0.999963     14416439     27306.67
+      33.631     0.999969     14416536     32768.00
+      33.791     0.999973     14416579     36408.89
+      33.983     0.999976     14416614     40960.00
+      34.207     0.999979     14416660     46811.43
+      34.431     0.999982     14416701     54613.33
+      34.783     0.999985     14416747     65536.00
+      34.975     0.999986     14416772     72817.78
+      35.167     0.999988     14416791     81920.00
+      35.359     0.999989     14416811     93622.86
+      35.679     0.999991     14416833    109226.67
+      35.935     0.999992     14416855    131072.00
+      36.031     0.999993     14416866    145635.56
+      36.223     0.999994     14416877    163840.00
+      36.383     0.999995     14416890    187245.71
+      36.511     0.999995     14416901    218453.33
+      36.735     0.999996     14416911    262144.00
+      36.863     0.999997     14416916    291271.11
+      36.959     0.999997     14416922    327680.00
+      37.023     0.999997     14416928    374491.43
+      37.119     0.999998     14416933    436906.67
+      37.343     0.999998     14416937    524288.00
+      37.471     0.999998     14416941    582542.22
+      37.535     0.999998     14416943    655360.00
+      37.887     0.999999     14416945    748982.86
+      38.079     0.999999     14416948    873813.33
+      38.367     0.999999     14416952   1048576.00
+      38.367     0.999999     14416952   1165084.44
+      38.623     0.999999     14416954   1310720.00
+      38.751     0.999999     14416955   1497965.71
+      38.815     0.999999     14416956   1747626.67
+      39.135     1.000000     14416958   2097152.00
+      39.135     1.000000     14416958   2330168.89
+      39.263     1.000000     14416959   2621440.00
+      39.615     1.000000     14416960   2995931.43
+      39.615     1.000000     14416960   3495253.33
+      39.839     1.000000     14416961   4194304.00
+      39.839     1.000000     14416961   4660337.78
+      39.999     1.000000     14416962   5242880.00
+      39.999     1.000000     14416962   5991862.86
+      39.999     1.000000     14416962   6990506.67
+      40.383     1.000000     14416963   8388608.00
+      40.383     1.000000     14416963   9320675.55
+      40.383     1.000000     14416963  10485760.00
+      40.383     1.000000     14416963  11983725.71
+      40.383     1.000000     14416963  13981013.34
+      40.703     1.000000     14416964  16777216.00
+      40.703     1.000000     14416964          inf
+#[Mean    =        2.049, StdDeviation   =        2.205]
+#[Max     =       40.672, Total count    =     14416964]
+#[Buckets =           27, SubBuckets     =         2048]
+----------------------------------------------------------
+  17299750 requests in 1.00m, 2.51GB read
+Requests/sec: 288329.98
+Transfer/sec:     42.90MB

results/20260526-220625/axum-mem-s1/probe.txt

@@ -0,0 +1,13 @@
+Running 30s test @ http://127.0.0.1:8084
+  8 threads and 256 connections
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency   639.67us  467.13us  13.80ms   91.37%
+    Req/Sec    51.97k     3.50k   85.12k    86.12%
+  Latency Distribution
+     50%  581.00us
+     75%  760.00us
+     90%    0.96ms
+     99%    2.63ms
+  12415738 requests in 30.04s, 1.80GB read
+Requests/sec: 413242.62
+Transfer/sec:     61.48MB

results/20260526-220625/axum-mem-s1/proc-stats.tsv

@@ -0,0 +1,61 @@
+ts	cpu_pct	rss_kb
+1779826349	579,00	4220
+1779826351	552,00	19652
+1779826353	609,00	19652
+1779826355	571,00	19652
+1779826357	595,00	19656
+1779826359	592,00	19656
+1779826361	619,00	20560
+1779826363	613,00	20560
+1779826365	613,00	20560
+1779826367	607,00	21336
+1779826369	621,00	21336
+1779826371	615,00	21656
+1779826373	611,00	21656
+1779826375	612,00	21672
+1779826377	616,00	21672
+1779826379	398,00	21984
+1779826381	428,00	23340
+1779826383	430,00	23072
+1779826385	405,00	23496
+1779826387	438,00	23072
+1779826389	420,00	23072
+1779826391	429,00	23104
+1779826393	442,00	23084
+1779826395	437,00	23120
+1779826397	418,00	23072
+1779826399	384,00	23228
+1779826401	401,00	23436
+1779826403	449,00	23072
+1779826405	437,00	23072
+1779826407	409,00	23072
+1779826409	373,00	23180
+1779826411	437,00	23376
+1779826413	427,00	23268
+1779826415	373,00	23292
+1779826417	441,00	23284
+1779826419	415,00	23292
+1779826421	433,00	23368
+1779826423	445,00	23304
+1779826425	435,00	23304
+1779826427	439,00	23284
+1779826429	397,00	23284
+1779826431	373,00	23288
+1779826433	396,04	23304
+1779826435	441,00	23304
+1779826437	395,00	23304
+1779826439	432,00	23304
+1779826441	436,00	23304
+1779826443	419,00	23304
+1779826445	430,00	23444
+1779826447	419,00	23304
+1779826449	431,00	23304
+1779826451	417,00	23360
+1779826453	423,76	23304
+1779826455	449,00	23316
+1779826457	410,00	23304
+1779826459	436,00	23312
+1779826461	435,00	23304
+1779826463	431,00	23304
+1779826465	354,00	23304
+1779826467	366,00	23320

results/20260526-220625/axum-mem-s1/result.json

@@ -0,0 +1,18 @@
+{
+  "run_id":         "axum-mem-s1",
+  "server":         "axum-mem",
+  "scenario":       "s1",
+  "probe_rps":      413242.62,
+  "target_rps":     289269,
+  "sustained_rps":  288329.98,
+  "latency": {
+    "p50":   "1.48ms",
+    "p90":   "3.95ms",
+    "p99":   "11.64ms",
+    "p999":  "24.19ms",
+    "max":   "40.70ms"
+  },
+  "non_2xx":        0,
+  "mean_cpu_pct":   "464.3",
+  "max_rss_kb":     23496
+}

results/20260526-220625/axum-mem-s1/run_all.log

@@ -0,0 +1,26 @@
+runner: launching server on cores 0-7: /home/mark/projects/urus-bench/target/release/axum-server --addr=127.0.0.1:8084 --store=memory
+runner: smoke OK
+runner: probe (30s closed-loop, 256 conns)
+runner: probe RPS=413242.62, target (sustained)=289269
+runner: warm-up (30s at -R289269)
+runner: measure (60s at -R289269)
+
+runner: DONE -> /home/mark/projects/urus-bench/results/axum-mem-s1
+{
+  "run_id": "axum-mem-s1",
+  "server": "axum-mem",
+  "scenario": "s1",
+  "probe_rps": 413242.62,
+  "target_rps": 289269,
+  "sustained_rps": 288329.98,
+  "latency": {
+    "p50": "1.48ms",
+    "p90": "3.95ms",
+    "p99": "11.64ms",
+    "p999": "24.19ms",
+    "max": "40.70ms"
+  },
+  "non_2xx": 0,
+  "mean_cpu_pct": "464.3",
+  "max_rss_kb": 23496
+}

results/20260526-220625/axum-mem-s1/server.log

@@ -0,0 +1 @@
+axum-server: store=Memory addr=127.0.0.1:8084 auth=true

results/20260526-220625/axum-mem-s1/warmup.txt

@@ -0,0 +1,16 @@
+Running 30s test @ http://127.0.0.1:8084
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 1.983ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 2.116ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.893ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 2.305ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 2.177ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.902ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 2.353ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.989ms, rate sampling interval: 10ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     2.19ms    2.39ms  42.46ms   91.61%
+    Req/Sec    38.14k     6.05k   88.11k    76.78%
+  8654278 requests in 30.00s, 1.26GB read
+Requests/sec: 288481.54
+Transfer/sec:     42.92MB

results/20260526-220625/axum-mem-s2/measure.txt

@@ -0,0 +1,264 @@
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 1m test @ http://127.0.0.1:8085
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 4.922ms, rate sampling interval: 24ms
+  Thread calibration: mean lat.: 5.787ms, rate sampling interval: 26ms
+  Thread calibration: mean lat.: 5.205ms, rate sampling interval: 24ms
+  Thread calibration: mean lat.: 5.610ms, rate sampling interval: 22ms
+  Thread calibration: mean lat.: 4.772ms, rate sampling interval: 24ms
+  Thread calibration: mean lat.: 5.568ms, rate sampling interval: 26ms
+  Thread calibration: mean lat.: 4.684ms, rate sampling interval: 24ms
+  Thread calibration: mean lat.: 6.581ms, rate sampling interval: 34ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     4.93ms    9.50ms 118.59ms   91.52%
+    Req/Sec    40.34k     5.13k   94.80k    83.13%
+  Latency Distribution (HdrHistogram - Recorded Latency)
+ 50.000%    1.82ms
+ 75.000%    3.85ms
+ 90.000%   11.93ms
+ 99.000%   49.66ms
+ 99.900%   85.44ms
+ 99.990%  102.27ms
+ 99.999%  111.81ms
+100.000%  118.65ms
+
+  Detailed Percentile spectrum:
+       Value   Percentile   TotalCount 1/(1-Percentile)
+
+       0.022     0.000000            1         1.00
+       0.635     0.100000      1577124         1.11
+       0.921     0.200000      3150899         1.25
+       1.193     0.300000      4728583         1.43
+       1.475     0.400000      6301814         1.67
+       1.816     0.500000      7874871         2.00
+       2.029     0.550000      8662958         2.22
+       2.295     0.600000      9452231         2.50
+       2.661     0.650000     10238288         2.86
+       3.169     0.700000     11025060         3.33
+       3.849     0.750000     11814198         4.00
+       4.275     0.775000     12207634         4.44
+       4.811     0.800000     12599828         5.00
+       5.595     0.825000     12994752         5.71
+       6.887     0.850000     13387253         6.67
+       8.887     0.875000     13781783         8.00
+      10.247     0.887500     13978183         8.89
+      11.927     0.900000     14175175        10.00
+      13.951     0.912500     14371940        11.43
+      16.367     0.925000     14568508        13.33
+      19.263     0.937500     14766111        16.00
+      20.959     0.943750     14863869        17.78
+      22.895     0.950000     14962190        20.00
+      25.103     0.956250     15060788        22.86
+      27.711     0.962500     15159484        26.67
+      30.751     0.968750     15257569        32.00
+      32.447     0.971875     15306672        35.56
+      34.335     0.975000     15355983        40.00
+      36.447     0.978125     15405232        45.71
+      38.911     0.981250     15454464        53.33
+      41.855     0.984375     15503807        64.00
+      43.583     0.985938     15528119        71.11
+      45.599     0.987500     15552872        80.00
+      47.935     0.989062     15577571        91.43
+      50.975     0.990625     15602071       106.67
+      55.039     0.992188     15626562       128.00
+      57.439     0.992969     15638942       142.22
+      59.967     0.993750     15651170       160.00
+      62.687     0.994531     15663512       182.86
+      65.503     0.995313     15675769       213.33
+      68.415     0.996094     15688224       256.00
+      69.951     0.996484     15694318       284.44
+      71.615     0.996875     15700468       320.00
+      73.343     0.997266     15706591       365.71
+      75.263     0.997656     15712647       426.67
+      77.631     0.998047     15718913       512.00
+      78.911     0.998242     15721928       568.89
+      80.255     0.998437     15724999       640.00
+      81.855     0.998633     15728031       731.43
+      83.711     0.998828     15731130       853.33
+      85.759     0.999023     15734282      1024.00
+      86.783     0.999121     15735763      1137.78
+      87.935     0.999219     15737309      1280.00
+      89.215     0.999316     15738798      1462.86
+      90.623     0.999414     15740393      1706.67
+      92.223     0.999512     15741870      2048.00
+      93.183     0.999561     15742651      2275.56
+      94.015     0.999609     15743410      2560.00
+      95.039     0.999658     15744214      2925.71
+      96.191     0.999707     15744967      3413.33
+      97.407     0.999756     15745719      4096.00
+      98.111     0.999780     15746119      4551.11
+      98.879     0.999805     15746500      5120.00
+      99.647     0.999829     15746885      5851.43
+     100.415     0.999854     15747275      6826.67
+     101.311     0.999878     15747643      8192.00
+     101.823     0.999890     15747855      9102.22
+     102.335     0.999902     15748025     10240.00
+     102.911     0.999915     15748230     11702.86
+     103.551     0.999927     15748414     13653.33
+     104.319     0.999939     15748602     16384.00
+     104.831     0.999945     15748698     18204.44
+     105.279     0.999951     15748803     20480.00
+     105.791     0.999957     15748889     23405.71
+     106.431     0.999963     15748987     27306.67
+     107.391     0.999969     15749083     32768.00
+     107.903     0.999973     15749133     36408.89
+     108.351     0.999976     15749180     40960.00
+     108.799     0.999979     15749226     46811.43
+     109.311     0.999982     15749276     54613.33
+     109.823     0.999985     15749321     65536.00
+     110.271     0.999986     15749344     72817.78
+     110.847     0.999988     15749368     81920.00
+     111.615     0.999989     15749392     93622.86
+     112.255     0.999991     15749416    109226.67
+     113.343     0.999992     15749440    131072.00
+     114.111     0.999993     15749454    145635.56
+     114.431     0.999994     15749464    163840.00
+     115.071     0.999995     15749477    187245.71
+     115.583     0.999995     15749488    218453.33
+     115.839     0.999996     15749500    262144.00
+     115.967     0.999997     15749506    291271.11
+     116.159     0.999997     15749514    327680.00
+     116.223     0.999997     15749518    374491.43
+     116.479     0.999998     15749524    436906.67
+     116.799     0.999998     15749530    524288.00
+     117.183     0.999998     15749533    582542.22
+     117.375     0.999998     15749536    655360.00
+     117.631     0.999999     15749541    748982.86
+     117.695     0.999999     15749542    873813.33
+     117.887     0.999999     15749545   1048576.00
+     117.951     0.999999     15749549   1165084.44
+     117.951     0.999999     15749549   1310720.00
+     118.079     0.999999     15749552   1497965.71
+     118.079     0.999999     15749552   1747626.67
+     118.207     1.000000     15749554   2097152.00
+     118.207     1.000000     15749554   2330168.89
+     118.207     1.000000     15749554   2621440.00
+     118.271     1.000000     15749556   2995931.43
+     118.271     1.000000     15749556   3495253.33
+     118.399     1.000000     15749557   4194304.00
+     118.399     1.000000     15749557   4660337.78
+     118.399     1.000000     15749557   5242880.00
+     118.463     1.000000     15749558   5991862.86
+     118.463     1.000000     15749558   6990506.67
+     118.527     1.000000     15749559   8388608.00
+     118.527     1.000000     15749559   9320675.55
+     118.527     1.000000     15749559  10485760.00
+     118.527     1.000000     15749559  11983725.71
+     118.527     1.000000     15749559  13981013.34
+     118.655     1.000000     15749560  16777216.00
+     118.655     1.000000     15749560          inf
+#[Mean    =        4.934, StdDeviation   =        9.498]
+#[Max     =      118.592, Total count    =     15749560]
+#[Buckets =           27, SubBuckets     =         2048]
+----------------------------------------------------------
+  18935446 requests in 1.00m, 3.14GB read
+  Non-2xx or 3xx responses: 18935446
+Requests/sec: 315596.13
+Transfer/sec:     53.57MB

results/20260526-220625/axum-mem-s2/probe.txt

@@ -0,0 +1,122 @@
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 30s test @ http://127.0.0.1:8085
+  8 threads and 256 connections
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency   606.52us  579.41us  18.39ms   95.36%
+    Req/Sec    56.77k     6.42k   78.33k    84.42%
+  Latency Distribution
+     50%  514.00us
+     75%  684.00us
+     90%    0.90ms
+     99%    3.45ms
+  13564654 requests in 30.05s, 2.25GB read
+  Non-2xx or 3xx responses: 13564654
+Requests/sec: 451454.42
+Transfer/sec:     76.64MB

results/20260526-220625/axum-mem-s2/proc-stats.tsv

@@ -0,0 +1,61 @@
+ts	cpu_pct	rss_kb
+1779826470	561,00	7220
+1779826472	509,00	22188
+1779826474	509,00	23880
+1779826476	597,00	25320
+1779826478	570,00	26056
+1779826480	596,00	26908
+1779826482	575,00	26980
+1779826484	573,00	27120
+1779826486	596,00	27092
+1779826488	573,00	27480
+1779826490	598,00	27284
+1779826492	558,00	27284
+1779826494	583,00	26864
+1779826496	585,00	26548
+1779826498	591,00	26592
+1779826500	313,00	27092
+1779826502	365,00	27992
+1779826504	364,00	28408
+1779826506	400,00	28228
+1779826508	425,00	28472
+1779826510	415,00	29272
+1779826512	368,00	29188
+1779826514	381,00	28956
+1779826516	412,00	29572
+1779826518	412,00	29112
+1779826520	411,00	28892
+1779826522	361,00	29268
+1779826524	378,00	29368
+1779826526	390,00	29352
+1779826528	395,00	28988
+1779826530	409,00	29788
+1779826532	402,00	29848
+1779826534	405,00	30752
+1779826536	399,00	30596
+1779826538	364,00	30856
+1779826540	411,00	30920
+1779826542	426,00	30600
+1779826544	412,00	30780
+1779826546	324,00	30704
+1779826548	368,00	30824
+1779826550	421,00	30612
+1779826552	352,00	31068
+1779826554	381,00	30780
+1779826556	369,31	30360
+1779826558	376,00	30336
+1779826560	384,00	30976
+1779826562	355,00	30884
+1779826564	396,00	30968
+1779826566	419,00	30996
+1779826568	380,00	31276
+1779826570	391,00	30768
+1779826572	404,00	30964
+1779826574	421,00	30616
+1779826576	414,00	30444
+1779826578	405,00	30036
+1779826580	407,00	30904
+1779826582	404,00	31380
+1779826584	385,00	31552
+1779826586	404,00	31612
+1779826588	356,00	30572

results/20260526-220625/axum-mem-s2/result.json

@@ -0,0 +1,18 @@
+{
+  "run_id":         "axum-mem-s2",
+  "server":         "axum-mem",
+  "scenario":       "s2",
+  "probe_rps":      451454.42,
+  "target_rps":     316018,
+  "sustained_rps":  315596.13,
+  "latency": {
+    "p50":   "1.82ms",
+    "p90":   "11.93ms",
+    "p99":   "49.66ms",
+    "p999":  "85.44ms",
+    "max":   "118.65ms"
+  },
+  "non_2xx":        18935446,
+  "mean_cpu_pct":   "435.1",
+  "max_rss_kb":     31612
+}

results/20260526-220625/axum-mem-s2/run_all.log

@@ -0,0 +1,28 @@
+runner: launching server on cores 0-7: /home/mark/projects/urus-bench/target/release/axum-server --addr=127.0.0.1:8085 --store=memory
+runner: smoke OK
+runner: pre-populating store with 10000 users
+runner: store now reports 100 users (list cap is 100)
+runner: probe (30s closed-loop, 256 conns)
+runner: probe RPS=451454.42, target (sustained)=316018
+runner: warm-up (30s at -R316018)
+runner: measure (60s at -R316018)
+
+runner: DONE -> /home/mark/projects/urus-bench/results/axum-mem-s2
+{
+  "run_id": "axum-mem-s2",
+  "server": "axum-mem",
+  "scenario": "s2",
+  "probe_rps": 451454.42,
+  "target_rps": 316018,
+  "sustained_rps": 315596.13,
+  "latency": {
+    "p50": "1.82ms",
+    "p90": "11.93ms",
+    "p99": "49.66ms",
+    "p999": "85.44ms",
+    "max": "118.65ms"
+  },
+  "non_2xx": 18935446,
+  "mean_cpu_pct": "435.1",
+  "max_rss_kb": 31612
+}

results/20260526-220625/axum-mem-s2/warmup.txt

@@ -0,0 +1,125 @@
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 30s test @ http://127.0.0.1:8085
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 5.241ms, rate sampling interval: 28ms
+  Thread calibration: mean lat.: 4.492ms, rate sampling interval: 23ms
+  Thread calibration: mean lat.: 3.817ms, rate sampling interval: 21ms
+  Thread calibration: mean lat.: 3.469ms, rate sampling interval: 17ms
+  Thread calibration: mean lat.: 4.138ms, rate sampling interval: 24ms
+  Thread calibration: mean lat.: 4.718ms, rate sampling interval: 21ms
+  Thread calibration: mean lat.: 4.582ms, rate sampling interval: 17ms
+  Thread calibration: mean lat.: 4.555ms, rate sampling interval: 21ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     4.47ms    8.91ms 105.28ms   93.09%
+    Req/Sec    40.53k     5.63k  102.62k    82.45%
+  9418548 requests in 30.00s, 1.56GB read
+  Non-2xx or 3xx responses: 9418548
+Requests/sec: 313959.99
+Transfer/sec:     53.30MB

results/20260526-220625/axum-mem-s3/measure.txt

@@ -0,0 +1,264 @@
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 1m test @ http://127.0.0.1:8086
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 4.780ms, rate sampling interval: 15ms
+  Thread calibration: mean lat.: 4.412ms, rate sampling interval: 13ms
+  Thread calibration: mean lat.: 3.519ms, rate sampling interval: 11ms
+  Thread calibration: mean lat.: 3.968ms, rate sampling interval: 17ms
+  Thread calibration: mean lat.: 3.430ms, rate sampling interval: 12ms
+  Thread calibration: mean lat.: 3.706ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 5.493ms, rate sampling interval: 19ms
+  Thread calibration: mean lat.: 3.901ms, rate sampling interval: 14ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     4.95ms   10.68ms 126.46ms   93.08%
+    Req/Sec    41.37k     7.39k  105.50k    79.92%
+  Latency Distribution (HdrHistogram - Recorded Latency)
+ 50.000%    1.75ms
+ 75.000%    3.53ms
+ 90.000%    9.95ms
+ 99.000%   60.45ms
+ 99.900%   93.95ms
+ 99.990%  107.58ms
+ 99.999%  118.46ms
+100.000%  126.53ms
+
+  Detailed Percentile spectrum:
+       Value   Percentile   TotalCount 1/(1-Percentile)
+
+       0.024     0.000000            1         1.00
+       0.623     0.100000      1584652         1.11
+       0.900     0.200000      3163938         1.25
+       1.162     0.300000      4747604         1.43
+       1.432     0.400000      6331993         1.67
+       1.749     0.500000      7908773         2.00
+       1.944     0.550000      8702113         2.22
+       2.179     0.600000      9493891         2.50
+       2.489     0.650000     10285199         2.86
+       2.931     0.700000     11074774         3.33
+       3.531     0.750000     11863830         4.00
+       3.907     0.775000     12260183         4.44
+       4.359     0.800000     12655685         5.00
+       4.955     0.825000     13050429         5.71
+       5.867     0.850000     13444860         6.67
+       7.435     0.875000     13840388         8.00
+       8.543     0.887500     14039206         8.89
+       9.951     0.900000     14236521        10.00
+      11.783     0.912500     14433796        11.43
+      14.223     0.925000     14631545        13.33
+      17.631     0.937500     14829267        16.00
+      19.951     0.943750     14927926        17.78
+      22.895     0.950000     15026751        20.00
+      26.191     0.956250     15125481        22.86
+      29.807     0.962500     15224256        26.67
+      34.079     0.968750     15323147        32.00
+      36.863     0.971875     15372596        35.56
+      40.095     0.975000     15422078        40.00
+      43.615     0.978125     15471716        45.71
+      47.455     0.981250     15521076        53.33
+      51.647     0.984375     15570412        64.00
+      53.855     0.985938     15594961        71.11
+      56.255     0.987500     15619862        80.00
+      58.815     0.989062     15644551        91.43
+      61.663     0.990625     15669145       106.67
+      65.023     0.992188     15693978       128.00
+      66.879     0.992969     15706354       142.22
+      68.927     0.993750     15718610       160.00
+      71.295     0.994531     15731040       182.86
+      74.111     0.995313     15743378       213.33
+      77.247     0.996094     15755741       256.00
+      78.975     0.996484     15761800       284.44
+      80.895     0.996875     15767990       320.00
+      82.815     0.997266     15774230       365.71
+      84.863     0.997656     15780383       426.67
+      87.103     0.998047     15786506       512.00
+      88.383     0.998242     15789693       568.89
+      89.663     0.998437     15792710       640.00
+      91.071     0.998633     15795841       731.43
+      92.543     0.998828     15798939       853.33
+      94.143     0.999023     15801915      1024.00
+      95.039     0.999121     15803457      1137.78
+      95.999     0.999219     15805013      1280.00
+      97.087     0.999316     15806551      1462.86
+      98.303     0.999414     15808132      1706.67
+      99.583     0.999512     15809666      2048.00
+     100.287     0.999561     15810430      2275.56
+     101.055     0.999609     15811214      2560.00
+     101.823     0.999658     15811954      2925.71
+     102.655     0.999707     15812725      3413.33
+     103.679     0.999756     15813522      4096.00
+     104.191     0.999780     15813916      4551.11
+     104.703     0.999805     15814272      5120.00
+     105.343     0.999829     15814676      5851.43
+     106.047     0.999854     15815065      6826.67
+     106.815     0.999878     15815438      8192.00
+     107.263     0.999890     15815637      9102.22
+     107.711     0.999902     15815814     10240.00
+     108.287     0.999915     15816030     11702.86
+     108.799     0.999927     15816206     13653.33
+     109.439     0.999939     15816399     16384.00
+     109.887     0.999945     15816500     18204.44
+     110.335     0.999951     15816586     20480.00
+     110.975     0.999957     15816687     23405.71
+     111.679     0.999963     15816788     27306.67
+     112.575     0.999969     15816881     32768.00
+     113.087     0.999973     15816928     36408.89
+     113.791     0.999976     15816974     40960.00
+     114.495     0.999979     15817024     46811.43
+     115.263     0.999982     15817069     54613.33
+     116.095     0.999985     15817117     65536.00
+     116.607     0.999986     15817143     72817.78
+     117.439     0.999988     15817166     81920.00
+     118.207     0.999989     15817190     93622.86
+     118.847     0.999991     15817214    109226.67
+     119.551     0.999992     15817239    131072.00
+     119.999     0.999993     15817252    145635.56
+     120.447     0.999994     15817265    163840.00
+     121.023     0.999995     15817274    187245.71
+     121.663     0.999995     15817287    218453.33
+     121.919     0.999996     15817301    262144.00
+     122.239     0.999997     15817305    291271.11
+     122.495     0.999997     15817312    327680.00
+     122.815     0.999997     15817316    374491.43
+     123.327     0.999998     15817322    436906.67
+     123.519     0.999998     15817328    524288.00
+     123.711     0.999998     15817331    582542.22
+     123.903     0.999998     15817334    655360.00
+     124.287     0.999999     15817337    748982.86
+     124.543     0.999999     15817340    873813.33
+     124.799     0.999999     15817343   1048576.00
+     125.055     0.999999     15817345   1165084.44
+     125.247     0.999999     15817347   1310720.00
+     125.503     0.999999     15817349   1497965.71
+     125.503     0.999999     15817349   1747626.67
+     125.631     1.000000     15817351   2097152.00
+     125.759     1.000000     15817352   2330168.89
+     125.759     1.000000     15817352   2621440.00
+     126.015     1.000000     15817353   2995931.43
+     126.079     1.000000     15817354   3495253.33
+     126.143     1.000000     15817355   4194304.00
+     126.143     1.000000     15817355   4660337.78
+     126.143     1.000000     15817355   5242880.00
+     126.335     1.000000     15817356   5991862.86
+     126.335     1.000000     15817356   6990506.67
+     126.399     1.000000     15817357   8388608.00
+     126.399     1.000000     15817357   9320675.55
+     126.399     1.000000     15817357  10485760.00
+     126.399     1.000000     15817357  11983725.71
+     126.399     1.000000     15817357  13981013.34
+     126.527     1.000000     15817358  16777216.00
+     126.527     1.000000     15817358          inf
+#[Mean    =        4.947, StdDeviation   =       10.685]
+#[Max     =      126.464, Total count    =     15817358]
+#[Buckets =           27, SubBuckets     =         2048]
+----------------------------------------------------------
+  18980199 requests in 1.00m, 3.15GB read
+  Non-2xx or 3xx responses: 18980199
+Requests/sec: 316342.34
+Transfer/sec:     53.70MB

results/20260526-220625/axum-mem-s3/probe.txt

@@ -0,0 +1,122 @@
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
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+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/usr/local/share/lua/5.1/common/init.lua'
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
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+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
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+	no file '/usr/local/lib/lua/5.1/common.so'
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 30s test @ http://127.0.0.1:8086
+  8 threads and 256 connections
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency   594.55us  511.59us  17.56ms   94.39%
+    Req/Sec    56.99k     5.13k   79.74k    85.92%
+  Latency Distribution
+     50%  521.00us
+     75%  686.00us
+     90%    0.88ms
+     99%    2.96ms
+  13614046 requests in 30.03s, 2.26GB read
+  Non-2xx or 3xx responses: 13614046
+Requests/sec: 453399.55
+Transfer/sec:     76.97MB

results/20260526-220625/axum-mem-s3/proc-stats.tsv

@@ -0,0 +1,61 @@
+ts	cpu_pct	rss_kb
+1779826591	581,00	7332
+1779826593	567,00	22000
+1779826595	560,00	23380
+1779826597	598,00	23744
+1779826599	552,00	23744
+1779826601	571,00	24692
+1779826603	575,00	24448
+1779826605	559,00	25136
+1779826607	584,00	25156
+1779826609	591,00	25824
+1779826611	600,00	25828
+1779826613	592,00	25828
+1779826615	600,00	25840
+1779826617	598,00	25840
+1779826619	594,00	26356
+1779826621	383,00	26804
+1779826623	418,00	28016
+1779826625	395,00	27992
+1779826627	396,00	27968
+1779826629	399,00	28168
+1779826631	407,00	27784
+1779826633	409,00	28772
+1779826635	408,00	28248
+1779826637	406,00	28464
+1779826639	416,00	28000
+1779826641	395,00	28964
+1779826643	420,00	28860
+1779826645	381,00	28648
+1779826647	381,19	28864
+1779826649	339,00	28772
+1779826651	337,00	29292
+1779826653	398,00	29948
+1779826655	354,00	29384
+1779826657	415,00	30332
+1779826659	427,00	29944
+1779826661	379,00	29908
+1779826663	391,00	30180
+1779826665	349,00	29900
+1779826667	372,00	29988
+1779826669	409,00	29548
+1779826671	368,00	30140
+1779826673	373,00	29696
+1779826675	419,00	30508
+1779826677	367,00	30316
+1779826679	342,00	31168
+1779826681	401,00	29220
+1779826683	409,00	29896
+1779826685	392,00	29324
+1779826687	404,00	30772
+1779826689	405,00	29748
+1779826691	393,00	30388
+1779826693	428,00	30552
+1779826695	360,00	30560
+1779826697	398,00	31536
+1779826699	390,10	31340
+1779826702	409,00	31604
+1779826704	395,00	31200
+1779826706	415,84	30940
+1779826708	423,00	30212
+1779826710	417,00	30548

results/20260526-220625/axum-mem-s3/result.json

@@ -0,0 +1,18 @@
+{
+  "run_id":         "axum-mem-s3",
+  "server":         "axum-mem",
+  "scenario":       "s3",
+  "probe_rps":      453399.55,
+  "target_rps":     317379,
+  "sustained_rps":  316342.34,
+  "latency": {
+    "p50":   "1.75ms",
+    "p90":   "9.95ms",
+    "p99":   "60.45ms",
+    "p999":  "93.95ms",
+    "max":   "126.53ms"
+  },
+  "non_2xx":        18980199,
+  "mean_cpu_pct":   "440.2",
+  "max_rss_kb":     31604
+}

results/20260526-220625/axum-mem-s3/run_all.log

@@ -0,0 +1,28 @@
+runner: launching server on cores 0-7: /home/mark/projects/urus-bench/target/release/axum-server --addr=127.0.0.1:8086 --store=memory
+runner: smoke OK
+runner: pre-populating store with 10000 users
+runner: store now reports 100 users (list cap is 100)
+runner: probe (30s closed-loop, 256 conns)
+runner: probe RPS=453399.55, target (sustained)=317379
+runner: warm-up (30s at -R317379)
+runner: measure (60s at -R317379)
+
+runner: DONE -> /home/mark/projects/urus-bench/results/axum-mem-s3
+{
+  "run_id": "axum-mem-s3",
+  "server": "axum-mem",
+  "scenario": "s3",
+  "probe_rps": 453399.55,
+  "target_rps": 317379,
+  "sustained_rps": 316342.34,
+  "latency": {
+    "p50": "1.75ms",
+    "p90": "9.95ms",
+    "p99": "60.45ms",
+    "p999": "93.95ms",
+    "max": "126.53ms"
+  },
+  "non_2xx": 18980199,
+  "mean_cpu_pct": "440.2",
+  "max_rss_kb": 31604
+}

results/20260526-220625/axum-mem-s3/warmup.txt

@@ -0,0 +1,125 @@
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 30s test @ http://127.0.0.1:8086
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 4.250ms, rate sampling interval: 21ms
+  Thread calibration: mean lat.: 4.074ms, rate sampling interval: 18ms
+  Thread calibration: mean lat.: 3.903ms, rate sampling interval: 19ms
+  Thread calibration: mean lat.: 3.121ms, rate sampling interval: 14ms
+  Thread calibration: mean lat.: 3.525ms, rate sampling interval: 15ms
+  Thread calibration: mean lat.: 3.819ms, rate sampling interval: 17ms
+  Thread calibration: mean lat.: 3.905ms, rate sampling interval: 17ms
+  Thread calibration: mean lat.: 3.869ms, rate sampling interval: 18ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     4.01ms    7.59ms 107.97ms   92.31%
+    Req/Sec    40.94k     5.89k  102.94k    82.22%
+  9496084 requests in 30.00s, 1.57GB read
+  Non-2xx or 3xx responses: 9496084
+Requests/sec: 316548.36
+Transfer/sec:     53.74MB

results/20260526-220625/axum-sqlite-s4/measure.txt

@@ -0,0 +1,264 @@
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 1m test @ http://127.0.0.1:8088
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 7.146ms, rate sampling interval: 30ms
+  Thread calibration: mean lat.: 5.310ms, rate sampling interval: 24ms
+  Thread calibration: mean lat.: 4.563ms, rate sampling interval: 23ms
+  Thread calibration: mean lat.: 4.274ms, rate sampling interval: 20ms
+  Thread calibration: mean lat.: 6.444ms, rate sampling interval: 37ms
+  Thread calibration: mean lat.: 3.653ms, rate sampling interval: 18ms
+  Thread calibration: mean lat.: 4.760ms, rate sampling interval: 24ms
+  Thread calibration: mean lat.: 5.317ms, rate sampling interval: 24ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     4.72ms   10.37ms 141.44ms   93.18%
+    Req/Sec    41.07k     5.30k  101.06k    82.85%
+  Latency Distribution (HdrHistogram - Recorded Latency)
+ 50.000%    1.71ms
+ 75.000%    3.51ms
+ 90.000%    9.89ms
+ 99.000%   56.13ms
+ 99.900%  109.69ms
+ 99.990%  129.92ms
+ 99.999%  138.37ms
+100.000%  141.57ms
+
+  Detailed Percentile spectrum:
+       Value   Percentile   TotalCount 1/(1-Percentile)
+
+       0.018     0.000000            1         1.00
+       0.611     0.100000      1604254         1.11
+       0.883     0.200000      3205872         1.25
+       1.139     0.300000      4804727         1.43
+       1.403     0.400000      6404466         1.67
+       1.711     0.500000      8004016         2.00
+       1.900     0.550000      8805635         2.22
+       2.129     0.600000      9607397         2.50
+       2.433     0.650000     10405994         2.86
+       2.887     0.700000     11207488         3.33
+       3.513     0.750000     12006881         4.00
+       3.897     0.775000     12407649         4.44
+       4.351     0.800000     12808826         5.00
+       4.943     0.825000     13207093         5.71
+       5.867     0.850000     13606890         6.67
+       7.447     0.875000     14007473         8.00
+       8.535     0.887500     14207059         8.89
+       9.887     0.900000     14406931        10.00
+      11.575     0.912500     14607362        11.43
+      13.687     0.925000     14807420        13.33
+      16.463     0.937500     15007703        16.00
+      18.191     0.943750     15107755        17.78
+      20.175     0.950000     15207622        20.00
+      22.511     0.956250     15307756        22.86
+      25.375     0.962500     15407545        26.67
+      29.055     0.968750     15507749        32.00
+      31.295     0.971875     15557678        35.56
+      34.015     0.975000     15607605        40.00
+      37.407     0.978125     15657589        45.71
+      41.535     0.981250     15707673        53.33
+      46.143     0.984375     15757648        64.00
+      48.639     0.985938     15782610        71.11
+      51.263     0.987500     15807710        80.00
+      54.111     0.989062     15832731        91.43
+      57.599     0.990625     15857605       106.67
+      62.015     0.992188     15882643       128.00
+      64.607     0.992969     15895263       142.22
+      67.391     0.993750     15907905       160.00
+      70.399     0.994531     15920323       182.86
+      74.175     0.995313     15932694       213.33
+      78.975     0.996094     15945141       256.00
+      81.855     0.996484     15951444       284.44
+      84.927     0.996875     15957744       320.00
+      88.255     0.997266     15963912       365.71
+      91.583     0.997656     15970204       426.67
+      95.679     0.998047     15976462       512.00
+      97.983     0.998242     15979596       568.89
+     100.543     0.998437     15982658       640.00
+     103.231     0.998633     15985830       731.43
+     106.175     0.998828     15988947       853.33
+     110.143     0.999023     15992037      1024.00
+     112.383     0.999121     15993643      1137.78
+     114.495     0.999219     15995168      1280.00
+     116.543     0.999316     15996772      1462.86
+     118.399     0.999414     15998307      1706.67
+     120.447     0.999512     15999893      2048.00
+     121.279     0.999561     16000643      2275.56
+     122.239     0.999609     16001458      2560.00
+     123.263     0.999658     16002248      2925.71
+     124.287     0.999707     16002991      3413.33
+     125.503     0.999756     16003781      4096.00
+     126.143     0.999780     16004185      4551.11
+     126.655     0.999805     16004568      5120.00
+     127.359     0.999829     16004942      5851.43
+     128.127     0.999854     16005345      6826.67
+     128.959     0.999878     16005744      8192.00
+     129.407     0.999890     16005927      9102.22
+     130.047     0.999902     16006129     10240.00
+     130.687     0.999915     16006314     11702.86
+     131.455     0.999927     16006502     13653.33
+     132.351     0.999939     16006716     16384.00
+     132.735     0.999945     16006800     18204.44
+     133.247     0.999951     16006899     20480.00
+     133.759     0.999957     16006990     23405.71
+     134.527     0.999963     16007096     27306.67
+     135.423     0.999969     16007194     32768.00
+     135.935     0.999973     16007240     36408.89
+     136.447     0.999976     16007288     40960.00
+     136.959     0.999979     16007345     46811.43
+     137.215     0.999982     16007384     54613.33
+     137.599     0.999985     16007430     65536.00
+     137.855     0.999986     16007458     72817.78
+     138.111     0.999988     16007487     81920.00
+     138.239     0.999989     16007504     93622.86
+     138.495     0.999991     16007538    109226.67
+     138.623     0.999992     16007549    131072.00
+     138.751     0.999993     16007561    145635.56
+     138.879     0.999994     16007579    163840.00
+     139.007     0.999995     16007586    187245.71
+     139.263     0.999995     16007601    218453.33
+     139.519     0.999996     16007611    262144.00
+     139.647     0.999997     16007618    291271.11
+     139.903     0.999997     16007626    327680.00
+     140.031     0.999997     16007631    374491.43
+     140.159     0.999998     16007634    436906.67
+     140.287     0.999998     16007643    524288.00
+     140.287     0.999998     16007643    582542.22
+     140.415     0.999998     16007648    655360.00
+     140.415     0.999999     16007648    748982.86
+     140.543     0.999999     16007652    873813.33
+     140.671     0.999999     16007654   1048576.00
+     140.799     0.999999     16007657   1165084.44
+     140.799     0.999999     16007657   1310720.00
+     140.927     0.999999     16007661   1497965.71
+     140.927     0.999999     16007661   1747626.67
+     141.055     1.000000     16007663   2097152.00
+     141.055     1.000000     16007663   2330168.89
+     141.055     1.000000     16007663   2621440.00
+     141.183     1.000000     16007667   2995931.43
+     141.183     1.000000     16007667   3495253.33
+     141.183     1.000000     16007667   4194304.00
+     141.183     1.000000     16007667   4660337.78
+     141.183     1.000000     16007667   5242880.00
+     141.183     1.000000     16007667   5991862.86
+     141.183     1.000000     16007667   6990506.67
+     141.311     1.000000     16007668   8388608.00
+     141.311     1.000000     16007668   9320675.55
+     141.311     1.000000     16007668  10485760.00
+     141.311     1.000000     16007668  11983725.71
+     141.311     1.000000     16007668  13981013.34
+     141.567     1.000000     16007669  16777216.00
+     141.567     1.000000     16007669          inf
+#[Mean    =        4.720, StdDeviation   =       10.366]
+#[Max     =      141.440, Total count    =     16007669]
+#[Buckets =           27, SubBuckets     =         2048]
+----------------------------------------------------------
+  19208634 requests in 1.00m, 3.18GB read
+  Non-2xx or 3xx responses: 19208634
+Requests/sec: 320149.67
+Transfer/sec:     54.35MB

results/20260526-220625/axum-sqlite-s4/probe.txt

@@ -0,0 +1,122 @@
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
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+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 30s test @ http://127.0.0.1:8088
+  8 threads and 256 connections
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency   584.49us  479.73us  12.43ms   93.73%
+    Req/Sec    57.68k     5.09k   81.48k    83.00%
+  Latency Distribution
+     50%  514.00us
+     75%  676.00us
+     90%    0.87ms
+     99%    2.87ms
+  13780918 requests in 30.03s, 2.28GB read
+  Non-2xx or 3xx responses: 13780918
+Requests/sec: 458843.73
+Transfer/sec:     77.89MB

results/20260526-220625/axum-sqlite-s4/proc-stats.tsv

@@ -0,0 +1,61 @@
+ts	cpu_pct	rss_kb
+1779826865	566,00	7988
+1779826867	435,00	22776
+1779826869	522,00	25212
+1779826871	567,00	25708
+1779826873	598,00	25852
+1779826875	582,00	25868
+1779826877	583,00	25852
+1779826879	584,00	25880
+1779826881	584,00	25840
+1779826883	597,00	25908
+1779826885	594,00	25892
+1779826887	579,00	25848
+1779826889	564,00	25852
+1779826891	586,00	25872
+1779826893	557,00	25904
+1779826895	337,00	26312
+1779826897	406,00	27408
+1779826899	428,00	27472
+1779826901	408,00	27816
+1779826903	423,00	27900
+1779826905	337,00	27980
+1779826907	420,00	28028
+1779826909	414,00	27968
+1779826911	370,00	28144
+1779826913	388,00	28252
+1779826915	418,00	28564
+1779826917	408,00	28688
+1779826919	419,00	28924
+1779826921	393,00	28968
+1779826923	340,00	29084
+1779826925	364,00	29260
+1779826927	404,00	29488
+1779826929	382,00	29620
+1779826931	415,00	29660
+1779826933	406,00	29836
+1779826935	414,00	29836
+1779826937	421,00	29880
+1779826939	405,00	29900
+1779826941	420,00	29992
+1779826943	411,00	30004
+1779826945	400,00	30008
+1779826947	385,00	30112
+1779826949	443,00	30136
+1779826951	423,00	30136
+1779826953	408,00	30328
+1779826955	431,00	30104
+1779826957	429,00	30076
+1779826959	394,00	30076
+1779826961	437,00	30080
+1779826963	432,00	30120
+1779826965	345,00	30080
+1779826967	391,00	30260
+1779826969	429,00	30196
+1779826971	404,00	30196
+1779826973	384,00	30788
+1779826975	366,00	30600
+1779826977	382,00	30156
+1779826979	415,00	30152
+1779826981	389,00	30148
+1779826983	408,00	30148

results/20260526-220625/axum-sqlite-s4/result.json

@@ -0,0 +1,18 @@
+{
+  "run_id":         "axum-sqlite-s4",
+  "server":         "axum-sqlite",
+  "scenario":       "s4",
+  "probe_rps":      458843.73,
+  "target_rps":     321190,
+  "sustained_rps":  320149.67,
+  "latency": {
+    "p50":   "1.71ms",
+    "p90":   "9.89ms",
+    "p99":   "56.13ms",
+    "p999":  "109.69ms",
+    "max":   "141.57ms"
+  },
+  "non_2xx":        19208634,
+  "mean_cpu_pct":   "442.4",
+  "max_rss_kb":     30788
+}

results/20260526-220625/axum-sqlite-s4/run_all.log

@@ -0,0 +1,28 @@
+runner: launching server on cores 0-7: /home/mark/projects/urus-bench/target/release/axum-server --addr=127.0.0.1:8088 --store=sqlite --db-path=/tmp/axum-bench-axum-sqlite-s4.sqlite
+runner: smoke OK
+runner: pre-populating store with 10000 users
+runner: store now reports 100 users (list cap is 100)
+runner: probe (30s closed-loop, 256 conns)
+runner: probe RPS=458843.73, target (sustained)=321190
+runner: warm-up (30s at -R321190)
+runner: measure (60s at -R321190)
+
+runner: DONE -> /home/mark/projects/urus-bench/results/axum-sqlite-s4
+{
+  "run_id": "axum-sqlite-s4",
+  "server": "axum-sqlite",
+  "scenario": "s4",
+  "probe_rps": 458843.73,
+  "target_rps": 321190,
+  "sustained_rps": 320149.67,
+  "latency": {
+    "p50": "1.71ms",
+    "p90": "9.89ms",
+    "p99": "56.13ms",
+    "p999": "109.69ms",
+    "max": "141.57ms"
+  },
+  "non_2xx": 19208634,
+  "mean_cpu_pct": "442.4",
+  "max_rss_kb": 30788
+}

results/20260526-220625/axum-sqlite-s4/warmup.txt

@@ -0,0 +1,125 @@
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
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+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
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+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 30s test @ http://127.0.0.1:8088
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 2.850ms, rate sampling interval: 11ms
+  Thread calibration: mean lat.: 2.608ms, rate sampling interval: 11ms
+  Thread calibration: mean lat.: 4.630ms, rate sampling interval: 19ms
+  Thread calibration: mean lat.: 4.266ms, rate sampling interval: 18ms
+  Thread calibration: mean lat.: 3.405ms, rate sampling interval: 11ms
+  Thread calibration: mean lat.: 3.628ms, rate sampling interval: 15ms
+  Thread calibration: mean lat.: 4.440ms, rate sampling interval: 15ms
+  Thread calibration: mean lat.: 3.436ms, rate sampling interval: 14ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     5.05ms    8.68ms  89.34ms   89.82%
+    Req/Sec    41.80k     7.73k   98.30k    79.39%
+  9573019 requests in 30.00s, 1.59GB read
+  Non-2xx or 3xx responses: 9573019
+Requests/sec: 319112.60
+Transfer/sec:     54.17MB

results/20260526-220625/summary.md

@@ -0,0 +1,35 @@
+# urus-bench summary
+
+- **Batch:** `20260526-220625`
+- **Host:** `nixosmark` (`Linux 6.12.90 x86_64`)
+- **CPUs:** `24 cores`
+- **Model:** AMD Ryzen 9 5900X 12-Core Processor
+- **Started:** `2026-05-26T22:06:26+02:00`
+- **Elapsed:** 999s
+- **Successful runs:** 8 / 8
+
+Timings: probe=30s, warmup=30s, measure=60s, sat_ratio=0.70
+
+## Sustained RPS (wrk2 @ 0.70 of saturation)
+
+|            | axum-mem       | axum-sqlite    | urus-mem       | urus-sqlite    |
+|------------|----------------|----------------|----------------|----------------|
+| s1         |         288330 |            — |          54641 |            — |
+| s2         |         315596 |            — |          53139 |            — |
+| s3         |         316342 |            — |          53616 |            — |
+| s4         |            — |         320150 |            — |          52590 |
+
+## p99 latency (at target rate)
+
+|            | axum-mem       | axum-sqlite    | urus-mem       | urus-sqlite    |
+|------------|----------------|----------------|----------------|----------------|
+| s1         |        11.64ms |            — |         2.70ms |            — |
+| s2         |        49.66ms |            — |         2.62ms |            — |
+| s3         |        60.45ms |            — |         2.67ms |            — |
+| s4         |            — |        56.13ms |            — |         2.53ms |
+
+## Spec checks (urus vs axum)
+
+| Scenario | urus RPS | axum RPS | urus/axum | within 2× of axum |
+|----------|----------|----------|-----------|-------------------|
+| s1       |    54640 |   288329 |      0.19 | ❌               |

results/20260526-220625/urus-mem-s1/measure.txt

@@ -0,0 +1,143 @@
+Running 1m test @ http://127.0.0.1:8081
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 1.312ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.311ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.313ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.313ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.333ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.312ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.332ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.337ms, rate sampling interval: 10ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     1.25ms  566.48us  10.59ms   67.37%
+    Req/Sec     7.21k   466.91    10.11k    71.34%
+  Latency Distribution (HdrHistogram - Recorded Latency)
+ 50.000%    1.21ms
+ 75.000%    1.62ms
+ 90.000%    2.01ms
+ 99.000%    2.70ms
+ 99.900%    3.69ms
+ 99.990%    4.88ms
+ 99.999%    6.14ms
+100.000%   10.60ms
+
+  Detailed Percentile spectrum:
+       Value   Percentile   TotalCount 1/(1-Percentile)
+
+       0.053     0.000000            1         1.00
+       0.551     0.100000       273118         1.11
+       0.746     0.200000       546571         1.25
+       0.907     0.300000       819410         1.43
+       1.057     0.400000      1092406         1.67
+       1.206     0.500000      1364829         2.00
+       1.282     0.550000      1500690         2.22
+       1.360     0.600000      1636592         2.50
+       1.441     0.650000      1772851         2.86
+       1.527     0.700000      1909120         3.33
+       1.620     0.750000      2045839         4.00
+       1.670     0.775000      2113401         4.44
+       1.724     0.800000      2182229         5.00
+       1.782     0.825000      2249791         5.71
+       1.847     0.850000      2318374         6.67
+       1.920     0.875000      2386250         8.00
+       1.961     0.887500      2420569         8.89
+       2.005     0.900000      2454311        10.00
+       2.055     0.912500      2489270        11.43
+       2.109     0.925000      2522491        13.33
+       2.173     0.937500      2557071        16.00
+       2.209     0.943750      2574199        17.78
+       2.247     0.950000      2590880        20.00
+       2.289     0.956250      2607930        22.86
+       2.337     0.962500      2625211        26.67
+       2.391     0.968750      2642014        32.00
+       2.421     0.971875      2650365        35.56
+       2.455     0.975000      2658911        40.00
+       2.493     0.978125      2667459        45.71
+       2.535     0.981250      2675922        53.33
+       2.583     0.984375      2684257        64.00
+       2.613     0.985938      2688652        71.11
+       2.643     0.987500      2692723        80.00
+       2.679     0.989062      2697098        91.43
+       2.719     0.990625      2701254       106.67
+       2.769     0.992188      2705534       128.00
+       2.799     0.992969      2707724       142.22
+       2.831     0.993750      2709813       160.00
+       2.869     0.994531      2711896       182.86
+       2.915     0.995313      2714025       213.33
+       2.973     0.996094      2716145       256.00
+       3.009     0.996484      2717235       284.44
+       3.051     0.996875      2718286       320.00
+       3.099     0.997266      2719327       365.71
+       3.169     0.997656      2720414       426.67
+       3.259     0.998047      2721459       512.00
+       3.317     0.998242      2722008       568.89
+       3.391     0.998437      2722526       640.00
+       3.487     0.998633      2723066       731.43
+       3.593     0.998828      2723600       853.33
+       3.709     0.999023      2724125      1024.00
+       3.777     0.999121      2724388      1137.78
+       3.853     0.999219      2724658      1280.00
+       3.933     0.999316      2724919      1462.86
+       4.025     0.999414      2725186      1706.67
+       4.127     0.999512      2725456      2048.00
+       4.183     0.999561      2725587      2275.56
+       4.251     0.999609      2725729      2560.00
+       4.315     0.999658      2725853      2925.71
+       4.399     0.999707      2725993      3413.33
+       4.487     0.999756      2726119      4096.00
+       4.527     0.999780      2726188      4551.11
+       4.583     0.999805      2726254      5120.00
+       4.639     0.999829      2726321      5851.43
+       4.707     0.999854      2726387      6826.67
+       4.787     0.999878      2726451      8192.00
+       4.851     0.999890      2726487      9102.22
+       4.895     0.999902      2726518     10240.00
+       4.967     0.999915      2726550     11702.86
+       5.063     0.999927      2726584     13653.33
+       5.131     0.999939      2726618     16384.00
+       5.175     0.999945      2726637     18204.44
+       5.203     0.999951      2726650     20480.00
+       5.275     0.999957      2726667     23405.71
+       5.359     0.999963      2726684     27306.67
+       5.419     0.999969      2726700     32768.00
+       5.475     0.999973      2726710     36408.89
+       5.511     0.999976      2726718     40960.00
+       5.531     0.999979      2726725     46811.43
+       5.567     0.999982      2726735     54613.33
+       5.711     0.999985      2726742     65536.00
+       5.815     0.999986      2726746     72817.78
+       6.019     0.999988      2726750     81920.00
+       6.131     0.999989      2726754     93622.86
+       6.183     0.999991      2726759    109226.67
+       6.211     0.999992      2726763    131072.00
+       6.331     0.999993      2726766    145635.56
+       6.351     0.999994      2726767    163840.00
+       6.375     0.999995      2726770    187245.71
+       6.479     0.999995      2726771    218453.33
+       6.539     0.999996      2726774    262144.00
+       6.539     0.999997      2726774    291271.11
+       6.543     0.999997      2726775    327680.00
+       6.631     0.999997      2726776    374491.43
+       6.647     0.999998      2726777    436906.67
+       6.655     0.999998      2726778    524288.00
+       6.855     0.999998      2726779    582542.22
+       6.855     0.999998      2726779    655360.00
+       9.807     0.999999      2726780    748982.86
+       9.807     0.999999      2726780    873813.33
+       9.839     0.999999      2726781   1048576.00
+       9.839     0.999999      2726781   1165084.44
+       9.839     0.999999      2726781   1310720.00
+      10.223     0.999999      2726782   1497965.71
+      10.223     0.999999      2726782   1747626.67
+      10.223     1.000000      2726782   2097152.00
+      10.223     1.000000      2726782   2330168.89
+      10.223     1.000000      2726782   2621440.00
+      10.599     1.000000      2726783   2995931.43
+      10.599     1.000000      2726783          inf
+#[Mean    =        1.252, StdDeviation   =        0.566]
+#[Max     =       10.592, Total count    =      2726783]
+#[Buckets =           27, SubBuckets     =         2048]
+----------------------------------------------------------
+  3278445 requests in 1.00m, 372.06MB read
+Requests/sec:  54640.68
+Transfer/sec:      6.20MB

results/20260526-220625/urus-mem-s1/probe.txt

@@ -0,0 +1,13 @@
+Running 30s test @ http://127.0.0.1:8081
+  8 threads and 256 connections
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     3.27ms  408.65us  14.31ms   84.94%
+    Req/Sec     9.84k   526.29    17.26k    81.03%
+  Latency Distribution
+     50%    3.17ms
+     75%    3.35ms
+     90%    3.76ms
+     99%    4.61ms
+  2352589 requests in 30.10s, 266.99MB read
+Requests/sec:  78159.14
+Transfer/sec:      8.87MB

results/20260526-220625/urus-mem-s1/proc-stats.tsv

@@ -0,0 +1,61 @@
+ts	cpu_pct	rss_kb
+1779825986	283,00	8116
+1779825988	285,00	16916
+1779825990	286,00	17096
+1779825992	287,00	17100
+1779825994	292,00	17120
+1779825996	283,00	17180
+1779825998	281,00	17188
+1779826000	283,00	17188
+1779826002	283,00	17188
+1779826004	286,00	17208
+1779826006	281,00	17208
+1779826008	285,00	17212
+1779826010	285,00	17228
+1779826012	283,00	17228
+1779826014	292,00	17232
+1779826016	186,00	15440
+1779826018	234,00	17340
+1779826020	216,00	17372
+1779826022	224,00	17396
+1779826024	226,00	17404
+1779826026	220,00	17480
+1779826028	212,00	17492
+1779826030	224,00	17492
+1779826032	181,00	17492
+1779826034	233,00	17492
+1779826036	231,00	17492
+1779826038	234,00	17492
+1779826040	221,00	17492
+1779826042	214,00	17492
+1779826044	204,00	17492
+1779826046	177,00	17228
+1779826048	223,00	17504
+1779826050	226,00	17504
+1779826052	217,00	17504
+1779826054	227,00	17504
+1779826056	224,00	17504
+1779826058	220,00	17504
+1779826060	226,00	17504
+1779826062	229,00	17504
+1779826064	217,00	17504
+1779826066	210,00	17504
+1779826068	225,00	17504
+1779826070	228,00	17504
+1779826072	196,00	17504
+1779826074	213,00	17504
+1779826076	217,00	17504
+1779826078	207,00	17504
+1779826080	208,00	17504
+1779826082	217,00	17504
+1779826084	222,00	17504
+1779826086	211,00	17504
+1779826088	228,00	17504
+1779826090	214,00	17504
+1779826092	221,00	17504
+1779826094	230,00	17504
+1779826096	227,00	17504
+1779826098	208,00	17504
+1779826100	227,00	17504
+1779826102	227,00	17504
+1779826104	229,00	17504

results/20260526-220625/urus-mem-s1/result.json

@@ -0,0 +1,18 @@
+{
+  "run_id":         "urus-mem-s1",
+  "server":         "urus-mem",
+  "scenario":       "s1",
+  "probe_rps":      78159.14,
+  "target_rps":     54711,
+  "sustained_rps":  54640.68,
+  "latency": {
+    "p50":   "1.21ms",
+    "p90":   "2.01ms",
+    "p99":   "2.70ms",
+    "p999":  "3.69ms",
+    "max":   "10.60ms"
+  },
+  "non_2xx":        0,
+  "mean_cpu_pct":   "234.8",
+  "max_rss_kb":     17504
+}

results/20260526-220625/urus-mem-s1/run_all.log

@@ -0,0 +1,26 @@
+runner: launching server on cores 0-7: /home/mark/projects/urus-bench/target/release/urus-server --addr=127.0.0.1:8081 --store=memory
+runner: smoke OK
+runner: probe (30s closed-loop, 256 conns)
+runner: probe RPS=78159.14, target (sustained)=54711
+runner: warm-up (30s at -R54711)
+runner: measure (60s at -R54711)
+
+runner: DONE -> /home/mark/projects/urus-bench/results/urus-mem-s1
+{
+  "run_id": "urus-mem-s1",
+  "server": "urus-mem",
+  "scenario": "s1",
+  "probe_rps": 78159.14,
+  "target_rps": 54711,
+  "sustained_rps": 54640.68,
+  "latency": {
+    "p50": "1.21ms",
+    "p90": "2.01ms",
+    "p99": "2.70ms",
+    "p999": "3.69ms",
+    "max": "10.60ms"
+  },
+  "non_2xx": 0,
+  "mean_cpu_pct": "234.8",
+  "max_rss_kb": 17504
+}

results/20260526-220625/urus-mem-s1/server.log

@@ -0,0 +1,10 @@
+urus-server: store=Memory addr=127.0.0.1:8081 auth=true
+urus: listening on 127.0.0.1:8081
+urus: listener 0 starting
+urus: listener 1 starting
+urus: listener 2 starting
+urus: listener 3 starting
+urus: listener 4 starting
+urus: listener 5 starting
+urus: listener 6 starting
+urus: listener 7 starting

results/20260526-220625/urus-mem-s1/warmup.txt

@@ -0,0 +1,16 @@
+Running 30s test @ http://127.0.0.1:8081
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 1.217ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.221ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.195ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.225ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.215ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.227ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.219ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.225ms, rate sampling interval: 10ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     1.23ms  557.40us   6.47ms   67.54%
+    Req/Sec     7.21k   494.29    10.22k    71.93%
+  1630772 requests in 30.00s, 185.07MB read
+Requests/sec:  54358.72
+Transfer/sec:      6.17MB

results/20260526-220625/urus-mem-s2/measure.txt

@@ -0,0 +1,252 @@
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 1m test @ http://127.0.0.1:8082
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 1.253ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.273ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.247ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.250ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.243ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.262ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.232ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.274ms, rate sampling interval: 10ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     1.22ms  552.44us  10.26ms   67.28%
+    Req/Sec     7.01k   455.06    10.33k    71.01%
+  Latency Distribution (HdrHistogram - Recorded Latency)
+ 50.000%    1.17ms
+ 75.000%    1.58ms
+ 90.000%    1.94ms
+ 99.000%    2.62ms
+ 99.900%    3.62ms
+ 99.990%    5.11ms
+ 99.999%    6.48ms
+100.000%   10.27ms
+
+  Detailed Percentile spectrum:
+       Value   Percentile   TotalCount 1/(1-Percentile)
+
+       0.049     0.000000            1         1.00
+       0.526     0.100000       265507         1.11
+       0.718     0.200000       530636         1.25
+       0.879     0.300000       797202         1.43
+       1.028     0.400000      1062069         1.67
+       1.175     0.500000      1326321         2.00
+       1.250     0.550000      1458991         2.22
+       1.327     0.600000      1592441         2.50
+       1.405     0.650000      1723863         2.86
+       1.488     0.700000      1856707         3.33
+       1.577     0.750000      1989235         4.00
+       1.625     0.775000      2055527         4.44
+       1.676     0.800000      2122080         5.00
+       1.731     0.825000      2187859         5.71
+       1.792     0.850000      2254340         6.67
+       1.861     0.875000      2320732         8.00
+       1.899     0.887500      2353724         8.89
+       1.941     0.900000      2387144        10.00
+       1.987     0.912500      2420026        11.43
+       2.038     0.925000      2453246        13.33
+       2.097     0.937500      2486524        16.00
+       2.131     0.943750      2503424        17.78
+       2.167     0.950000      2519657        20.00
+       2.209     0.956250      2536563        22.86
+       2.255     0.962500      2552964        26.67
+       2.307     0.968750      2569088        32.00
+       2.339     0.971875      2577770        35.56
+       2.371     0.975000      2585860        40.00
+       2.409     0.978125      2594217        45.71
+       2.451     0.981250      2602209        53.33
+       2.501     0.984375      2610511        64.00
+       2.531     0.985938      2614746        71.11
+       2.563     0.987500      2618837        80.00
+       2.599     0.989062      2622929        91.43
+       2.641     0.990625      2627029       106.67
+       2.693     0.992188      2631191       128.00
+       2.723     0.992969      2633289       142.22
+       2.757     0.993750      2635352       160.00
+       2.797     0.994531      2637395       182.86
+       2.847     0.995313      2639527       213.33
+       2.907     0.996094      2641575       256.00
+       2.941     0.996484      2642588       284.44
+       2.981     0.996875      2643618       320.00
+       3.033     0.997266      2644663       365.71
+       3.093     0.997656      2645696       426.67
+       3.179     0.998047      2646730       512.00
+       3.229     0.998242      2647236       568.89
+       3.293     0.998437      2647751       640.00
+       3.377     0.998633      2648273       731.43
+       3.485     0.998828      2648782       853.33
+       3.637     0.999023      2649301      1024.00
+       3.729     0.999121      2649565      1137.78
+       3.837     0.999219      2649821      1280.00
+       3.939     0.999316      2650080      1462.86
+       4.039     0.999414      2650339      1706.67
+       4.167     0.999512      2650602      2048.00
+       4.227     0.999561      2650729      2275.56
+       4.307     0.999609      2650859      2560.00
+       4.395     0.999658      2650983      2925.71
+       4.507     0.999707      2651116      3413.33
+       4.619     0.999756      2651243      4096.00
+       4.675     0.999780      2651308      4551.11
+       4.751     0.999805      2651373      5120.00
+       4.827     0.999829      2651436      5851.43
+       4.915     0.999854      2651501      6826.67
+       5.023     0.999878      2651567      8192.00
+       5.071     0.999890      2651598      9102.22
+       5.131     0.999902      2651633     10240.00
+       5.175     0.999915      2651663     11702.86
+       5.251     0.999927      2651695     13653.33
+       5.371     0.999939      2651729     16384.00
+       5.431     0.999945      2651745     18204.44
+       5.491     0.999951      2651761     20480.00
+       5.603     0.999957      2651776     23405.71
+       5.735     0.999963      2651792     27306.67
+       5.847     0.999969      2651810     32768.00
+       5.871     0.999973      2651818     36408.89
+       5.907     0.999976      2651825     40960.00
+       6.035     0.999979      2651833     46811.43
+       6.155     0.999982      2651841     54613.33
+       6.247     0.999985      2651849     65536.00
+       6.351     0.999986      2651853     72817.78
+       6.427     0.999988      2651857     81920.00
+       6.475     0.999989      2651861     93622.86
+       6.543     0.999991      2651865    109226.67
+       6.663     0.999992      2651869    131072.00
+       6.775     0.999993      2651871    145635.56
+       6.807     0.999994      2651873    163840.00
+       6.835     0.999995      2651875    187245.71
+       6.887     0.999995      2651877    218453.33
+       7.015     0.999996      2651879    262144.00
+       7.139     0.999997      2651880    291271.11
+       7.239     0.999997      2651881    327680.00
+       7.355     0.999997      2651882    374491.43
+       7.467     0.999998      2651883    436906.67
+       8.839     0.999998      2651884    524288.00
+       8.879     0.999998      2651885    582542.22
+       8.879     0.999998      2651885    655360.00
+       9.487     0.999999      2651886    748982.86
+       9.487     0.999999      2651886    873813.33
+       9.871     0.999999      2651887   1048576.00
+       9.871     0.999999      2651887   1165084.44
+       9.871     0.999999      2651887   1310720.00
+      10.127     0.999999      2651888   1497965.71
+      10.127     0.999999      2651888   1747626.67
+      10.127     1.000000      2651888   2097152.00
+      10.127     1.000000      2651888   2330168.89
+      10.127     1.000000      2651888   2621440.00
+      10.271     1.000000      2651889   2995931.43
+      10.271     1.000000      2651889          inf
+#[Mean    =        1.215, StdDeviation   =        0.552]
+#[Max     =       10.264, Total count    =      2651889]
+#[Buckets =           27, SubBuckets     =         2048]
+----------------------------------------------------------
+  3188375 requests in 1.00m, 428.73MB read
+  Non-2xx or 3xx responses: 3188375
+Requests/sec:  53139.27
+Transfer/sec:      7.15MB

results/20260526-220625/urus-mem-s2/probe.txt

@@ -0,0 +1,122 @@
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 30s test @ http://127.0.0.1:8082
+  8 threads and 256 connections
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     3.36ms  588.20us  28.42ms   90.23%
+    Req/Sec     9.57k     1.00k   38.51k    93.17%
+  Latency Distribution
+     50%    3.24ms
+     75%    3.53ms
+     90%    3.92ms
+     99%    4.73ms
+  2287972 requests in 30.10s, 307.66MB read
+  Non-2xx or 3xx responses: 2287972
+Requests/sec:  76012.04
+Transfer/sec:     10.22MB

results/20260526-220625/urus-mem-s2/proc-stats.tsv

@@ -0,0 +1,61 @@
+ts	cpu_pct	rss_kb
+1779826107	267,00	9824
+1779826109	289,00	18180
+1779826111	286,00	18208
+1779826113	285,00	18216
+1779826115	281,00	18248
+1779826117	282,00	18280
+1779826119	286,00	18280
+1779826121	283,00	18304
+1779826123	286,00	18308
+1779826125	288,00	18312
+1779826127	286,00	18356
+1779826129	283,00	18356
+1779826131	288,00	18356
+1779826133	290,00	18356
+1779826135	283,00	18356
+1779826137	179,00	16568
+1779826139	222,00	18424
+1779826141	215,00	18428
+1779826143	225,00	18428
+1779826145	221,00	18448
+1779826147	221,00	18448
+1779826149	217,00	18448
+1779826151	224,00	18448
+1779826153	221,00	18448
+1779826155	223,00	18448
+1779826157	220,00	18448
+1779826159	224,00	18448
+1779826161	223,00	18448
+1779826163	218,00	18448
+1779826165	227,00	18448
+1779826167	197,00	18280
+1779826169	196,00	18540
+1779826171	206,00	18548
+1779826173	223,00	18548
+1779826175	212,00	18548
+1779826177	215,00	18548
+1779826179	221,00	18560
+1779826181	205,00	18560
+1779826183	214,00	18568
+1779826185	211,00	18576
+1779826187	201,00	18576
+1779826189	220,00	18576
+1779826191	207,00	18576
+1779826193	190,00	18576
+1779826195	219,00	18584
+1779826197	195,00	18584
+1779826199	221,00	18584
+1779826201	202,97	18584
+1779826204	201,00	18584
+1779826206	211,00	18584
+1779826208	195,00	18584
+1779826210	193,00	18584
+1779826212	206,00	18584
+1779826214	211,00	18584
+1779826216	210,00	18584
+1779826218	211,00	18584
+1779826220	215,00	18584
+1779826222	219,00	18584
+1779826224	219,00	18584
+1779826226	215,00	18584

results/20260526-220625/urus-mem-s2/result.json

@@ -0,0 +1,18 @@
+{
+  "run_id":         "urus-mem-s2",
+  "server":         "urus-mem",
+  "scenario":       "s2",
+  "probe_rps":      76012.04,
+  "target_rps":     53208,
+  "sustained_rps":  53139.27,
+  "latency": {
+    "p50":   "1.17ms",
+    "p90":   "1.94ms",
+    "p99":   "2.62ms",
+    "p999":  "3.62ms",
+    "max":   "10.27ms"
+  },
+  "non_2xx":        3188375,
+  "mean_cpu_pct":   "230.1",
+  "max_rss_kb":     18584
+}

results/20260526-220625/urus-mem-s2/run_all.log

@@ -0,0 +1,28 @@
+runner: launching server on cores 0-7: /home/mark/projects/urus-bench/target/release/urus-server --addr=127.0.0.1:8082 --store=memory
+runner: smoke OK
+runner: pre-populating store with 10000 users
+runner: store now reports 100 users (list cap is 100)
+runner: probe (30s closed-loop, 256 conns)
+runner: probe RPS=76012.04, target (sustained)=53208
+runner: warm-up (30s at -R53208)
+runner: measure (60s at -R53208)
+
+runner: DONE -> /home/mark/projects/urus-bench/results/urus-mem-s2
+{
+  "run_id": "urus-mem-s2",
+  "server": "urus-mem",
+  "scenario": "s2",
+  "probe_rps": 76012.04,
+  "target_rps": 53208,
+  "sustained_rps": 53139.27,
+  "latency": {
+    "p50": "1.17ms",
+    "p90": "1.94ms",
+    "p99": "2.62ms",
+    "p999": "3.62ms",
+    "max": "10.27ms"
+  },
+  "non_2xx": 3188375,
+  "mean_cpu_pct": "230.1",
+  "max_rss_kb": 18584
+}

results/20260526-220625/urus-mem-s2/warmup.txt

@@ -0,0 +1,125 @@
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s2_user_get.lua: /home/mark/projects/urus-bench/loadgen/s2_user_get.lua:4: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 30s test @ http://127.0.0.1:8082
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 1.175ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.177ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.174ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.171ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.180ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.179ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.224ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.179ms, rate sampling interval: 10ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     1.18ms  538.34us   6.68ms   67.16%
+    Req/Sec     7.01k   517.92    10.67k    75.53%
+  1585917 requests in 30.00s, 213.26MB read
+  Non-2xx or 3xx responses: 1585917
+Requests/sec:  52864.79
+Transfer/sec:      7.11MB

results/20260526-220625/urus-mem-s3/measure.txt

@@ -0,0 +1,252 @@
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 1m test @ http://127.0.0.1:8083
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 1.286ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.323ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.293ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.319ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.326ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.286ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.289ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.287ms, rate sampling interval: 10ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     1.23ms  561.06us   7.58ms   67.45%
+    Req/Sec     7.07k   461.87    10.22k    68.78%
+  Latency Distribution (HdrHistogram - Recorded Latency)
+ 50.000%    1.19ms
+ 75.000%    1.60ms
+ 90.000%    1.97ms
+ 99.000%    2.67ms
+ 99.900%    3.71ms
+ 99.990%    5.19ms
+ 99.999%    6.75ms
+100.000%    7.58ms
+
+  Detailed Percentile spectrum:
+       Value   Percentile   TotalCount 1/(1-Percentile)
+
+       0.052     0.000000            2         1.00
+       0.535     0.100000       267869         1.11
+       0.729     0.200000       536075         1.25
+       0.890     0.300000       802909         1.43
+       1.041     0.400000      1071845         1.67
+       1.189     0.500000      1338619         2.00
+       1.265     0.550000      1472720         2.22
+       1.342     0.600000      1605568         2.50
+       1.423     0.650000      1740210         2.86
+       1.507     0.700000      1873403         3.33
+       1.598     0.750000      2007598         4.00
+       1.647     0.775000      2074294         4.44
+       1.699     0.800000      2141221         5.00
+       1.755     0.825000      2207705         5.71
+       1.817     0.850000      2274506         6.67
+       1.888     0.875000      2341913         8.00
+       1.927     0.887500      2374736         8.89
+       1.970     0.900000      2408193        10.00
+       2.017     0.912500      2441503        11.43
+       2.071     0.925000      2475843        13.33
+       2.131     0.937500      2508859        16.00
+       2.165     0.943750      2525409        17.78
+       2.203     0.950000      2542421        20.00
+       2.245     0.956250      2559261        22.86
+       2.291     0.962500      2575646        26.67
+       2.345     0.968750      2592041        32.00
+       2.377     0.971875      2600774        35.56
+       2.411     0.975000      2609119        40.00
+       2.449     0.978125      2617401        45.71
+       2.491     0.981250      2625472        53.33
+       2.543     0.984375      2634034        64.00
+       2.573     0.985938      2638237        71.11
+       2.605     0.987500      2642235        80.00
+       2.643     0.989062      2646539        91.43
+       2.687     0.990625      2650694       106.67
+       2.739     0.992188      2654835       128.00
+       2.769     0.992969      2656810       142.22
+       2.805     0.993750      2658926       160.00
+       2.847     0.994531      2661037       182.86
+       2.897     0.995313      2663118       213.33
+       2.961     0.996094      2665201       256.00
+       2.999     0.996484      2666220       284.44
+       3.047     0.996875      2667293       320.00
+       3.105     0.997266      2668310       365.71
+       3.177     0.997656      2669362       426.67
+       3.271     0.998047      2670394       512.00
+       3.331     0.998242      2670928       568.89
+       3.405     0.998437      2671447       640.00
+       3.497     0.998633      2671968       731.43
+       3.599     0.998828      2672483       853.33
+       3.731     0.999023      2673009      1024.00
+       3.805     0.999121      2673269      1137.78
+       3.885     0.999219      2673531      1280.00
+       3.969     0.999316      2673792      1462.86
+       4.083     0.999414      2674053      1706.67
+       4.203     0.999512      2674312      2048.00
+       4.271     0.999561      2674444      2275.56
+       4.351     0.999609      2674573      2560.00
+       4.435     0.999658      2674707      2925.71
+       4.531     0.999707      2674838      3413.33
+       4.651     0.999756      2674968      4096.00
+       4.707     0.999780      2675032      4551.11
+       4.775     0.999805      2675101      5120.00
+       4.839     0.999829      2675162      5851.43
+       4.967     0.999854      2675231      6826.67
+       5.079     0.999878      2675292      8192.00
+       5.131     0.999890      2675325      9102.22
+       5.195     0.999902      2675358     10240.00
+       5.291     0.999915      2675393     11702.86
+       5.403     0.999927      2675424     13653.33
+       5.559     0.999939      2675456     16384.00
+       5.599     0.999945      2675472     18204.44
+       5.727     0.999951      2675488     20480.00
+       5.851     0.999957      2675504     23405.71
+       5.915     0.999963      2675521     27306.67
+       6.171     0.999969      2675537     32768.00
+       6.231     0.999973      2675545     36408.89
+       6.327     0.999976      2675553     40960.00
+       6.411     0.999979      2675561     46811.43
+       6.547     0.999982      2675570     54613.33
+       6.619     0.999985      2675578     65536.00
+       6.655     0.999986      2675582     72817.78
+       6.679     0.999988      2675586     81920.00
+       6.723     0.999989      2675590     93622.86
+       6.795     0.999991      2675594    109226.67
+       6.879     0.999992      2675598    131072.00
+       6.895     0.999993      2675600    145635.56
+       6.927     0.999994      2675602    163840.00
+       6.931     0.999995      2675604    187245.71
+       7.019     0.999995      2675606    218453.33
+       7.119     0.999996      2675608    262144.00
+       7.131     0.999997      2675609    291271.11
+       7.135     0.999997      2675610    327680.00
+       7.147     0.999997      2675611    374491.43
+       7.151     0.999998      2675612    436906.67
+       7.187     0.999998      2675613    524288.00
+       7.331     0.999998      2675614    582542.22
+       7.331     0.999998      2675614    655360.00
+       7.399     0.999999      2675615    748982.86
+       7.399     0.999999      2675615    873813.33
+       7.439     0.999999      2675616   1048576.00
+       7.439     0.999999      2675616   1165084.44
+       7.439     0.999999      2675616   1310720.00
+       7.491     0.999999      2675617   1497965.71
+       7.491     0.999999      2675617   1747626.67
+       7.491     1.000000      2675617   2097152.00
+       7.491     1.000000      2675617   2330168.89
+       7.491     1.000000      2675617   2621440.00
+       7.583     1.000000      2675618   2995931.43
+       7.583     1.000000      2675618          inf
+#[Mean    =        1.232, StdDeviation   =        0.561]
+#[Max     =        7.580, Total count    =      2675618]
+#[Buckets =           27, SubBuckets     =         2048]
+----------------------------------------------------------
+  3216932 requests in 1.00m, 432.57MB read
+  Non-2xx or 3xx responses: 3216932
+Requests/sec:  53615.94
+Transfer/sec:      7.21MB

results/20260526-220625/urus-mem-s3/probe.txt

@@ -0,0 +1,122 @@
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
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+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
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+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/usr/local/share/lua/5.1/common/init.lua'
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 30s test @ http://127.0.0.1:8083
+  8 threads and 256 connections
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     3.33ms  491.70us  19.58ms   86.60%
+    Req/Sec     9.66k     1.41k   74.99k    99.25%
+  Latency Distribution
+     50%    3.20ms
+     75%    3.44ms
+     90%    3.92ms
+     99%    4.73ms
+  2308402 requests in 30.10s, 310.41MB read
+  Non-2xx or 3xx responses: 2308402
+Requests/sec:  76692.95
+Transfer/sec:     10.31MB

results/20260526-220625/urus-mem-s3/proc-stats.tsv

@@ -0,0 +1,61 @@
+ts	cpu_pct	rss_kb
+1779826228	277,00	9860
+1779826230	283,00	18204
+1779826232	285,00	18220
+1779826234	286,00	18232
+1779826237	290,00	18236
+1779826239	273,00	18248
+1779826241	281,00	18308
+1779826243	279,21	18328
+1779826245	283,00	18332
+1779826247	286,00	18332
+1779826249	285,00	18356
+1779826251	277,00	18356
+1779826253	283,00	18356
+1779826255	281,00	18356
+1779826257	289,00	18356
+1779826259	186,00	16564
+1779826261	213,00	18432
+1779826263	198,00	18440
+1779826265	216,00	18520
+1779826267	205,00	18548
+1779826269	208,00	18548
+1779826271	222,00	18552
+1779826273	224,00	18552
+1779826275	218,00	18552
+1779826277	215,00	18592
+1779826279	221,00	18592
+1779826281	210,00	18592
+1779826283	200,00	18592
+1779826285	218,00	18592
+1779826287	220,00	18592
+1779826289	207,00	18464
+1779826291	204,00	18744
+1779826293	211,00	18744
+1779826295	210,00	18744
+1779826297	212,00	18744
+1779826299	223,00	18744
+1779826301	221,00	18744
+1779826303	211,00	18744
+1779826305	221,00	18744
+1779826307	216,00	18784
+1779826309	217,00	18784
+1779826311	217,00	18784
+1779826313	221,00	18784
+1779826315	222,00	18784
+1779826317	221,00	18784
+1779826319	212,00	18784
+1779826321	214,00	18784
+1779826323	223,00	18784
+1779826325	214,00	18784
+1779826327	211,00	18784
+1779826329	214,00	18784
+1779826331	208,00	18784
+1779826333	210,00	18784
+1779826335	178,00	18784
+1779826337	206,00	18784
+1779826339	206,00	18784
+1779826341	208,00	18784
+1779826343	184,00	18784
+1779826345	216,00	18784
+1779826347	214,00	18784

results/20260526-220625/urus-mem-s3/result.json

@@ -0,0 +1,18 @@
+{
+  "run_id":         "urus-mem-s3",
+  "server":         "urus-mem",
+  "scenario":       "s3",
+  "probe_rps":      76692.95,
+  "target_rps":     53685,
+  "sustained_rps":  53615.94,
+  "latency": {
+    "p50":   "1.19ms",
+    "p90":   "1.97ms",
+    "p99":   "2.67ms",
+    "p999":  "3.71ms",
+    "max":   "7.58ms"
+  },
+  "non_2xx":        3216932,
+  "mean_cpu_pct":   "229.4",
+  "max_rss_kb":     18784
+}

results/20260526-220625/urus-mem-s3/run_all.log

@@ -0,0 +1,28 @@
+runner: launching server on cores 0-7: /home/mark/projects/urus-bench/target/release/urus-server --addr=127.0.0.1:8083 --store=memory
+runner: smoke OK
+runner: pre-populating store with 10000 users
+runner: store now reports 100 users (list cap is 100)
+runner: probe (30s closed-loop, 256 conns)
+runner: probe RPS=76692.95, target (sustained)=53685
+runner: warm-up (30s at -R53685)
+runner: measure (60s at -R53685)
+
+runner: DONE -> /home/mark/projects/urus-bench/results/urus-mem-s3
+{
+  "run_id": "urus-mem-s3",
+  "server": "urus-mem",
+  "scenario": "s3",
+  "probe_rps": 76692.95,
+  "target_rps": 53685,
+  "sustained_rps": 53615.94,
+  "latency": {
+    "p50": "1.19ms",
+    "p90": "1.97ms",
+    "p99": "2.67ms",
+    "p999": "3.71ms",
+    "max": "7.58ms"
+  },
+  "non_2xx": 3216932,
+  "mean_cpu_pct": "229.4",
+  "max_rss_kb": 18784
+}

results/20260526-220625/urus-mem-s3/warmup.txt

@@ -0,0 +1,125 @@
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
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+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 30s test @ http://127.0.0.1:8083
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 1.321ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.331ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.314ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.321ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.350ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.345ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.312ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.350ms, rate sampling interval: 10ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     1.26ms  585.94us   8.00ms   68.15%
+    Req/Sec     7.07k   491.83    10.33k    74.67%
+  1606397 requests in 30.00s, 216.01MB read
+  Non-2xx or 3xx responses: 1606397
+Requests/sec:  53547.34
+Transfer/sec:      7.20MB

results/20260526-220625/urus-sqlite-s4/measure.txt

@@ -0,0 +1,252 @@
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 1m test @ http://127.0.0.1:8087
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 1.149ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.140ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.137ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.143ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.138ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.148ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.143ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.255ms, rate sampling interval: 10ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     1.17ms  535.60us   6.75ms   67.06%
+    Req/Sec     6.95k   485.27    10.56k    72.39%
+  Latency Distribution (HdrHistogram - Recorded Latency)
+ 50.000%    1.13ms
+ 75.000%    1.52ms
+ 90.000%    1.87ms
+ 99.000%    2.53ms
+ 99.900%    3.53ms
+ 99.990%    4.70ms
+ 99.999%    5.57ms
+100.000%    6.75ms
+
+  Detailed Percentile spectrum:
+       Value   Percentile   TotalCount 1/(1-Percentile)
+
+       0.048     0.000000            1         1.00
+       0.497     0.100000       264156         1.11
+       0.681     0.200000       526035         1.25
+       0.838     0.300000       788948         1.43
+       0.985     0.400000      1051873         1.67
+       1.132     0.500000      1316522         2.00
+       1.205     0.550000      1446440         2.22
+       1.280     0.600000      1578365         2.50
+       1.357     0.650000      1710105         2.86
+       1.437     0.700000      1841349         3.33
+       1.523     0.750000      1973519         4.00
+       1.568     0.775000      2037952         4.44
+       1.617     0.800000      2104514         5.00
+       1.669     0.825000      2169590         5.71
+       1.727     0.850000      2235549         6.67
+       1.793     0.875000      2301603         8.00
+       1.829     0.887500      2333983         8.89
+       1.869     0.900000      2366945        10.00
+       1.913     0.912500      2399521        11.43
+       1.963     0.925000      2432460        13.33
+       2.021     0.937500      2465640        16.00
+       2.053     0.943750      2482183        17.78
+       2.089     0.950000      2498948        20.00
+       2.127     0.956250      2514972        22.86
+       2.171     0.962500      2531105        26.67
+       2.225     0.968750      2547964        32.00
+       2.253     0.971875      2555696        35.56
+       2.287     0.975000      2564213        40.00
+       2.323     0.978125      2572456        45.71
+       2.363     0.981250      2580486        53.33
+       2.411     0.984375      2588666        64.00
+       2.439     0.985938      2592852        71.11
+       2.469     0.987500      2596892        80.00
+       2.503     0.989062      2600927        91.43
+       2.543     0.990625      2605025       106.67
+       2.591     0.992188      2609065       128.00
+       2.621     0.992969      2611180       142.22
+       2.653     0.993750      2613165       160.00
+       2.693     0.994531      2615312       182.86
+       2.739     0.995313      2617352       213.33
+       2.795     0.996094      2619364       256.00
+       2.833     0.996484      2620390       284.44
+       2.877     0.996875      2621416       320.00
+       2.929     0.997266      2622439       365.71
+       2.991     0.997656      2623440       426.67
+       3.079     0.998047      2624469       512.00
+       3.135     0.998242      2624994       568.89
+       3.211     0.998437      2625492       640.00
+       3.305     0.998633      2626014       731.43
+       3.413     0.998828      2626523       853.33
+       3.547     0.999023      2627035      1024.00
+       3.625     0.999121      2627292      1137.78
+       3.701     0.999219      2627547      1280.00
+       3.785     0.999316      2627808      1462.86
+       3.873     0.999414      2628062      1706.67
+       3.979     0.999512      2628322      2048.00
+       4.035     0.999561      2628449      2275.56
+       4.099     0.999609      2628579      2560.00
+       4.159     0.999658      2628709      2925.71
+       4.231     0.999707      2628830      3413.33
+       4.315     0.999756      2628959      4096.00
+       4.363     0.999780      2629028      4551.11
+       4.411     0.999805      2629087      5120.00
+       4.471     0.999829      2629153      5851.43
+       4.527     0.999854      2629217      6826.67
+       4.619     0.999878      2629281      8192.00
+       4.663     0.999890      2629315      9102.22
+       4.715     0.999902      2629347     10240.00
+       4.783     0.999915      2629376     11702.86
+       4.843     0.999927      2629411     13653.33
+       4.915     0.999939      2629441     16384.00
+       4.967     0.999945      2629456     18204.44
+       5.007     0.999951      2629472     20480.00
+       5.055     0.999957      2629488     23405.71
+       5.127     0.999963      2629505     27306.67
+       5.175     0.999969      2629521     32768.00
+       5.187     0.999973      2629528     36408.89
+       5.227     0.999976      2629537     40960.00
+       5.255     0.999979      2629544     46811.43
+       5.303     0.999982      2629553     54613.33
+       5.359     0.999985      2629560     65536.00
+       5.407     0.999986      2629564     72817.78
+       5.479     0.999988      2629568     81920.00
+       5.547     0.999989      2629572     93622.86
+       5.635     0.999991      2629576    109226.67
+       5.707     0.999992      2629580    131072.00
+       5.739     0.999993      2629582    145635.56
+       5.743     0.999994      2629584    163840.00
+       5.779     0.999995      2629587    187245.71
+       5.783     0.999995      2629588    218453.33
+       5.827     0.999996      2629590    262144.00
+       5.867     0.999997      2629591    291271.11
+       5.871     0.999997      2629592    327680.00
+       5.891     0.999997      2629593    374491.43
+       5.911     0.999998      2629594    436906.67
+       5.923     0.999998      2629595    524288.00
+       6.003     0.999998      2629596    582542.22
+       6.003     0.999998      2629596    655360.00
+       6.295     0.999999      2629597    748982.86
+       6.295     0.999999      2629597    873813.33
+       6.479     0.999999      2629598   1048576.00
+       6.479     0.999999      2629598   1165084.44
+       6.479     0.999999      2629598   1310720.00
+       6.595     0.999999      2629599   1497965.71
+       6.595     0.999999      2629599   1747626.67
+       6.595     1.000000      2629599   2097152.00
+       6.595     1.000000      2629599   2330168.89
+       6.595     1.000000      2629599   2621440.00
+       6.751     1.000000      2629600   2995931.43
+       6.751     1.000000      2629600          inf
+#[Mean    =        1.168, StdDeviation   =        0.536]
+#[Max     =        6.748, Total count    =      2629600]
+#[Buckets =           27, SubBuckets     =         2048]
+----------------------------------------------------------
+  3155499 requests in 1.00m, 424.31MB read
+  Non-2xx or 3xx responses: 3155499
+Requests/sec:  52589.50
+Transfer/sec:      7.07MB

results/20260526-220625/urus-sqlite-s4/probe.txt

@@ -0,0 +1,122 @@
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
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+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
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+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
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+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 30s test @ http://127.0.0.1:8087
+  8 threads and 256 connections
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     3.39ms  478.41us  19.15ms   84.07%
+    Req/Sec     9.48k   599.23    13.12k    69.45%
+  Latency Distribution
+     50%    3.26ms
+     75%    3.57ms
+     90%    3.98ms
+     99%    4.74ms
+  2268670 requests in 30.10s, 305.06MB read
+  Non-2xx or 3xx responses: 2268670
+Requests/sec:  75372.95
+Transfer/sec:     10.14MB

results/20260526-220625/urus-sqlite-s4/proc-stats.tsv

@@ -0,0 +1,61 @@
+ts	cpu_pct	rss_kb
+1779826713	281,00	11060
+1779826715	285,00	19396
+1779826717	280,00	19476
+1779826719	279,00	19524
+1779826721	286,00	19524
+1779826723	285,00	19528
+1779826725	283,00	19528
+1779826727	282,00	19540
+1779826729	288,00	19540
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+1779826737	279,00	19540
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+1779826741	289,00	19540
+1779826743	211,00	17812
+1779826745	207,00	19664
+1779826747	213,00	19664
+1779826749	216,00	19664
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+1779826753	216,00	19668
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+1779826763	199,01	19668
+1779826765	201,00	19668
+1779826767	210,00	19668
+1779826769	174,00	19668
+1779826771	187,00	19672
+1779826773	198,00	19328
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+1779826787	226,00	19724
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+1779826801	220,00	19724
+1779826803	215,00	19724
+1779826805	222,00	19724
+1779826807	222,00	19724
+1779826809	223,00	19724
+1779826811	220,00	19724
+1779826813	214,00	19724
+1779826815	201,00	19724
+1779826818	208,00	19724
+1779826820	214,00	19724
+1779826822	210,00	19728
+1779826824	219,00	19728
+1779826826	189,00	19728
+1779826828	224,00	19728
+1779826830	222,00	19728
+1779826832	219,00	19728

results/20260526-220625/urus-sqlite-s4/result.json

@@ -0,0 +1,18 @@
+{
+  "run_id":         "urus-sqlite-s4",
+  "server":         "urus-sqlite",
+  "scenario":       "s4",
+  "probe_rps":      75372.95,
+  "target_rps":     52761,
+  "sustained_rps":  52589.50,
+  "latency": {
+    "p50":   "1.13ms",
+    "p90":   "1.87ms",
+    "p99":   "2.53ms",
+    "p999":  "3.53ms",
+    "max":   "6.75ms"
+  },
+  "non_2xx":        3155499,
+  "mean_cpu_pct":   "230.3",
+  "max_rss_kb":     19728
+}

results/20260526-220625/urus-sqlite-s4/run_all.log

@@ -0,0 +1,28 @@
+runner: launching server on cores 0-7: /home/mark/projects/urus-bench/target/release/urus-server --addr=127.0.0.1:8087 --store=sqlite --db-path=/tmp/urus-bench-urus-sqlite-s4.sqlite
+runner: smoke OK
+runner: pre-populating store with 10000 users
+runner: store now reports 100 users (list cap is 100)
+runner: probe (30s closed-loop, 256 conns)
+runner: probe RPS=75372.95, target (sustained)=52761
+runner: warm-up (30s at -R52761)
+runner: measure (60s at -R52761)
+
+runner: DONE -> /home/mark/projects/urus-bench/results/urus-sqlite-s4
+{
+  "run_id": "urus-sqlite-s4",
+  "server": "urus-sqlite",
+  "scenario": "s4",
+  "probe_rps": 75372.95,
+  "target_rps": 52761,
+  "sustained_rps": 52589.50,
+  "latency": {
+    "p50": "1.13ms",
+    "p90": "1.87ms",
+    "p99": "2.53ms",
+    "p999": "3.53ms",
+    "max": "6.75ms"
+  },
+  "non_2xx": 3155499,
+  "mean_cpu_pct": "230.3",
+  "max_rss_kb": 19728
+}

results/20260526-220625/urus-sqlite-s4/warmup.txt

@@ -0,0 +1,125 @@
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
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+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+/home/mark/projects/urus-bench/loadgen/s3_mixed.lua: /home/mark/projects/urus-bench/loadgen/s3_mixed.lua:6: module 'common' not found:
+	no field package.preload['common']
+	no file './common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/luajit-2.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common.lua'
+	no file '/usr/local/share/lua/5.1/common/init.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common.lua'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/share/lua/5.1/common/init.lua'
+	no file './common.so'
+	no file '/usr/local/lib/lua/5.1/common.so'
+	no file '/nix/store/l2j91s4fj2n0r47fcd77r6kk18sbbndx-luajit-2.1.1741730670/lib/lua/5.1/common.so'
+	no file '/usr/local/lib/lua/5.1/loadall.so'
+Running 30s test @ http://127.0.0.1:8087
+  8 threads and 256 connections
+  Thread calibration: mean lat.: 1.238ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.234ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.246ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.237ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.241ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.240ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.254ms, rate sampling interval: 10ms
+  Thread calibration: mean lat.: 1.243ms, rate sampling interval: 10ms
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency     1.20ms  546.91us   6.64ms   66.90%
+    Req/Sec     6.94k   416.47    10.11k    71.16%
+  1578753 requests in 30.00s, 212.29MB read
+  Non-2xx or 3xx responses: 1578753
+Requests/sec:  52625.73
+Transfer/sec:      7.08MB

run_all.sh

@@ -0,0 +1,411 @@
+#!/usr/bin/env bash
+# urus-bench/run_all.sh
+#
+# Runs the full (server, scenario) matrix and writes a summary.md.
+#
+# Default matrix (8 runs):
+#   urus-mem    × s1, s2, s3
+#   axum-mem    × s1, s2, s3
+#   urus-sqlite × s4
+#   axum-sqlite × s4
+#
+# Cowboy is not built; skipped.
+#
+# Usage:
+#   ./run_all.sh                          # full matrix, defaults
+#   ./run_all.sh --quick                  # short timings (15s+15s+15s)
+#   ./run_all.sh --scenarios=s1,s2        # subset of scenarios
+#   ./run_all.sh --servers=urus-mem       # subset of servers
+#   ./run_all.sh --batch=foo              # batch label (default: timestamp)
+#
+# Per-run env vars (PROBE_SEC, WARMUP_SEC, MEASURE_SEC, PREPOP, SERVER_CPUS,
+# LOADGEN_CPUS, WRK_CONNS, WRK_THREADS, SAT_RATIO) are passed through to
+# runner.sh; --quick is just a preset for the timings.
+#
+# Output:
+#   results/<batch>/                 batch dir
+#     <server>-<scenario>/           per-run dir (from runner.sh)
+#     summary.md                     aggregated headline table
+#     index.json                     machine-readable index of all runs
+
+set -euo pipefail
+
+REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+# ---------------------------------------------------------------------------
+# Defaults
+# ---------------------------------------------------------------------------
+
+ALL_SERVERS_MEM=(urus-mem axum-mem)
+ALL_SERVERS_SQLITE=(urus-sqlite axum-sqlite)
+ALL_SCENARIOS_MEM=(s1 s2 s3)
+ALL_SCENARIOS_SQLITE=(s4)
+
+SERVERS_FILTER=""
+SCENARIOS_FILTER=""
+BATCH=""
+QUICK=0
+
+# ---------------------------------------------------------------------------
+# Arg parsing
+# ---------------------------------------------------------------------------
+
+for arg in "$@"; do
+  case "$arg" in
+    --quick)            QUICK=1 ;;
+    --servers=*)        SERVERS_FILTER="${arg#*=}" ;;
+    --scenarios=*)      SCENARIOS_FILTER="${arg#*=}" ;;
+    --batch=*)          BATCH="${arg#*=}" ;;
+    -h|--help)
+      sed -n '2,/^$/p' "$0" | sed 's/^# \{0,1\}//'
+      exit 0 ;;
+    *)
+      echo "run_all: unknown arg: $arg" >&2
+      exit 2 ;;
+  esac
+done
+
+if [[ "$QUICK" == "1" ]]; then
+  export PROBE_SEC="${PROBE_SEC:-15}"
+  export WARMUP_SEC="${WARMUP_SEC:-15}"
+  export MEASURE_SEC="${MEASURE_SEC:-15}"
+fi
+
+BATCH="${BATCH:-$(date +%Y%m%d-%H%M%S)}"
+BATCH_DIR="${REPO_ROOT}/results/${BATCH}"
+mkdir -p "$BATCH_DIR"
+
+# ---------------------------------------------------------------------------
+# Build the matrix
+# ---------------------------------------------------------------------------
+#
+# A run is a pair "<server> <scenario>". We compute the full matrix, then
+# apply filters. s1/s2/s3 always pair with the memory backends; s4 only
+# pairs with sqlite backends.
+
+contains() {
+  # contains "needle" "csv-list" → 0 if needle in csv (or csv empty), else 1
+  local needle="$1" haystack="$2"
+  [[ -z "$haystack" ]] && return 0
+  local IFS=,
+  for item in $haystack; do
+    [[ "$item" == "$needle" ]] && return 0
+  done
+  return 1
+}
+
+runs=()
+for srv in "${ALL_SERVERS_MEM[@]}"; do
+  contains "$srv" "$SERVERS_FILTER" || continue
+  for sc in "${ALL_SCENARIOS_MEM[@]}"; do
+    contains "$sc" "$SCENARIOS_FILTER" || continue
+    runs+=("$srv $sc")
+  done
+done
+for srv in "${ALL_SERVERS_SQLITE[@]}"; do
+  contains "$srv" "$SERVERS_FILTER" || continue
+  for sc in "${ALL_SCENARIOS_SQLITE[@]}"; do
+    contains "$sc" "$SCENARIOS_FILTER" || continue
+    runs+=("$srv $sc")
+  done
+done
+
+if [[ "${#runs[@]}" -eq 0 ]]; then
+  echo "run_all: empty matrix (filters too narrow?)" >&2
+  exit 2
+fi
+
+# ---------------------------------------------------------------------------
+# Build binaries up front
+# ---------------------------------------------------------------------------
+#
+# We always rebuild in --release. If urus-server or axum-server is not
+# requested, cargo will still build the workspace, but that's fine — a
+# 1-minute one-time cost beats a confusing "binary not found" mid-batch.
+
+echo "run_all: building binaries (release)..."
+( cd "$REPO_ROOT" && cargo build --release ) || {
+  echo "run_all: cargo build failed" >&2
+  exit 3
+}
+
+# ---------------------------------------------------------------------------
+# Run the matrix
+# ---------------------------------------------------------------------------
+
+total="${#runs[@]}"
+echo
+echo "run_all: batch=${BATCH}, ${total} run(s):"
+i=0
+for r in "${runs[@]}"; do
+  i=$((i + 1))
+  printf "  [%d/%d] %s\n" "$i" "$total" "$r"
+done
+echo
+
+i=0
+failed=()
+succeeded=()
+START_TS=$(date +%s)
+
+# Per-run port offset so concurrent stale processes (if any) don't collide.
+BASE_PORT="${BASE_PORT:-8080}"
+
+for r in "${runs[@]}"; do
+  i=$((i + 1))
+  set -- $r
+  SERVER="$1"; SCENARIO="$2"
+  RUN_ID="${SERVER}-${SCENARIO}"
+  RUN_DIR="${BATCH_DIR}/${RUN_ID}"
+
+  printf '\n========== [%d/%d] %-12s %-3s ==========\n' \
+    "$i" "$total" "$SERVER" "$SCENARIO"
+
+  # Each run gets its own port so a hung server from a previous run can't
+  # silently keep answering on the default port.
+  PORT=$((BASE_PORT + i))
+
+  # Each run gets a unique results dir under the batch dir. runner.sh
+  # writes to results/<run_id>/ at the repo root by default — we pass the
+  # run_id but also need it to land under the batch dir. Cheapest fix:
+  # let runner write to its default location, then move it under batch.
+  if PORT="$PORT" "${REPO_ROOT}/runner.sh" "$SERVER" "$SCENARIO" "$RUN_ID" \
+       > "${BATCH_DIR}/${RUN_ID}.stdout.log" 2>&1; then
+    # Move the runner's output dir into the batch dir.
+    if [[ -d "${REPO_ROOT}/results/${RUN_ID}" ]]; then
+      rm -rf "$RUN_DIR"
+      mv "${REPO_ROOT}/results/${RUN_ID}" "$RUN_DIR"
+    fi
+    # Move the stdout log next to the run.
+    mv "${BATCH_DIR}/${RUN_ID}.stdout.log" "${RUN_DIR}/run_all.log" 2>/dev/null || true
+
+    # Pretty-print the headline line from the result.
+    if [[ -f "${RUN_DIR}/result.json" ]]; then
+      rps=$(awk -F'[:,]' '/"sustained_rps"/ {gsub(/[ "]/, "", $2); print $2; exit}' "${RUN_DIR}/result.json")
+      p99=$(awk -F'"' '/"p99"/ {print $4; exit}' "${RUN_DIR}/result.json")
+      printf '       sustained=%s rps   p99=%s\n' "$rps" "$p99"
+    fi
+    succeeded+=("$r")
+  else
+    echo "       FAILED (see ${BATCH_DIR}/${RUN_ID}.stdout.log)"
+    failed+=("$r")
+    # Also try to salvage anything runner left behind for debugging.
+    if [[ -d "${REPO_ROOT}/results/${RUN_ID}" ]]; then
+      mkdir -p "${BATCH_DIR}/${RUN_ID}"
+      mv "${REPO_ROOT}/results/${RUN_ID}"/* "${BATCH_DIR}/${RUN_ID}/" 2>/dev/null || true
+      rmdir "${REPO_ROOT}/results/${RUN_ID}" 2>/dev/null || true
+    fi
+  fi
+done
+
+END_TS=$(date +%s)
+ELAPSED=$((END_TS - START_TS))
+
+# ---------------------------------------------------------------------------
+# Build summary.md
+# ---------------------------------------------------------------------------
+#
+# The headline-table shape from urus-bench-spec.md §6 has servers as
+# columns, scenarios as rows, two metrics per scenario (RPS sustained,
+# p99). We render whatever subset of the matrix actually ran.
+
+SUMMARY="${BATCH_DIR}/summary.md"
+INDEX="${BATCH_DIR}/index.json"
+
+# Discover every server / scenario actually represented in the batch.
+declare -A by_run        # by_run["server scenario"] = path to result.json
+servers_seen=()
+scenarios_seen=()
+for d in "$BATCH_DIR"/*/; do
+  rj="${d}result.json"
+  [[ -f "$rj" ]] || continue
+  srv=$(awk -F'"' '/"server":/ {print $4; exit}' "$rj")
+  scn=$(awk -F'"' '/"scenario":/ {print $4; exit}' "$rj")
+  [[ -z "$srv" || -z "$scn" ]] && continue
+  by_run["$srv $scn"]="$rj"
+  # Track distinct lists (order preserved by first occurrence).
+  if ! printf '%s\n' "${servers_seen[@]}" | grep -qx "$srv"; then
+    servers_seen+=("$srv")
+  fi
+  if ! printf '%s\n' "${scenarios_seen[@]}" | grep -qx "$scn"; then
+    scenarios_seen+=("$scn")
+  fi
+done
+
+# Sort scenarios in canonical order s1..s4.
+IFS=$'\n' scenarios_seen=($(printf '%s\n' "${scenarios_seen[@]}" | sort))
+unset IFS
+
+# ---------------------------------------------------------------------------
+# Emit summary.md
+# ---------------------------------------------------------------------------
+
+{
+  echo "# urus-bench summary"
+  echo
+  echo "- **Batch:** \`${BATCH}\`"
+  echo "- **Host:** \`$(uname -n)\` (\`$(uname -srm)\`)"
+  echo "- **CPUs:** \`$(nproc) cores\`"
+  if [[ -r /proc/cpuinfo ]]; then
+    model=$(awk -F: '/^model name/ {print $2; exit}' /proc/cpuinfo | sed 's/^ *//')
+    [[ -n "$model" ]] && echo "- **Model:** ${model}"
+  fi
+  echo "- **Started:** \`$(date -d "@$START_TS" -Iseconds 2>/dev/null || date -Iseconds)\`"
+  echo "- **Elapsed:** ${ELAPSED}s"
+  echo "- **Successful runs:** ${#succeeded[@]} / ${total}"
+  if [[ "${#failed[@]}" -gt 0 ]]; then
+    echo "- **Failed runs:** ${failed[*]}"
+  fi
+  echo
+  echo "Timings: probe=${PROBE_SEC:-30}s, warmup=${WARMUP_SEC:-30}s, measure=${MEASURE_SEC:-60}s, sat_ratio=${SAT_RATIO:-0.70}"
+  echo
+
+  if [[ "${#servers_seen[@]}" -eq 0 ]]; then
+    echo "_No successful runs to summarize._"
+    exit 0
+  fi
+
+  # --- Sustained RPS table -----------------------------------------------
+  echo "## Sustained RPS (wrk2 @ ${SAT_RATIO:-0.70} of saturation)"
+  echo
+  printf '|            '
+  for srv in "${servers_seen[@]}"; do printf '| %-14s ' "$srv"; done
+  printf '|\n'
+  printf '|------------'
+  for _ in "${servers_seen[@]}"; do printf '|----------------'; done
+  printf '|\n'
+  for scn in "${scenarios_seen[@]}"; do
+    printf '| %-10s ' "$scn"
+    for srv in "${servers_seen[@]}"; do
+      rj="${by_run["$srv $scn"]:-}"
+      if [[ -n "$rj" ]]; then
+        rps=$(awk -F'[:,]' '/"sustained_rps"/ {gsub(/[ "]/, "", $2); print $2; exit}' "$rj")
+        # round to integer for readability
+        rps=$(awk -v x="$rps" 'BEGIN {printf "%d", x+0.5}')
+        printf '| %14s ' "$rps"
+      else
+        printf '| %14s ' "—"
+      fi
+    done
+    printf '|\n'
+  done
+  echo
+
+  # --- p99 table ----------------------------------------------------------
+  echo "## p99 latency (at target rate)"
+  echo
+  printf '|            '
+  for srv in "${servers_seen[@]}"; do printf '| %-14s ' "$srv"; done
+  printf '|\n'
+  printf '|------------'
+  for _ in "${servers_seen[@]}"; do printf '|----------------'; done
+  printf '|\n'
+  for scn in "${scenarios_seen[@]}"; do
+    printf '| %-10s ' "$scn"
+    for srv in "${servers_seen[@]}"; do
+      rj="${by_run["$srv $scn"]:-}"
+      if [[ -n "$rj" ]]; then
+        p99=$(awk -F'"' '/"p99"/ {print $4; exit}' "$rj")
+        printf '| %14s ' "$p99"
+      else
+        printf '| %14s ' "—"
+      fi
+    done
+    printf '|\n'
+  done
+  echo
+
+  # --- Spec pass/fail check, urus vs axum --------------------------------
+  # Per spec §6: urus RPS >= 50% of axum RPS on the same scenario.
+  printf '## Spec checks (urus vs axum)\n\n'
+  printf '| Scenario | urus RPS | axum RPS | urus/axum | within 2× of axum |\n'
+  printf '|----------|----------|----------|-----------|-------------------|\n'
+  for scn in "${scenarios_seen[@]}"; do
+    # Match urus-{mem,sqlite} against axum-{mem,sqlite} for the matching tier.
+    urus_run=""; axum_run=""
+    for k in "${!by_run[@]}"; do
+      set -- $k
+      s="$1"; sc="$2"
+      [[ "$sc" != "$scn" ]] && continue
+      case "$s" in
+        urus-*) urus_run="${by_run[$k]}" ;;
+        axum-*) axum_run="${by_run[$k]}" ;;
+      esac
+    done
+    if [[ -n "$urus_run" && -n "$axum_run" ]]; then
+      u=$(awk -F'[:,]' '/"sustained_rps"/ {gsub(/[ "]/, "", $2); print $2; exit}' "$urus_run")
+      a=$(awk -F'[:,]' '/"sustained_rps"/ {gsub(/[ "]/, "", $2); print $2; exit}' "$axum_run")
+      ratio=$(awk -v u="$u" -v a="$a" 'BEGIN { if (a+0 > 0) printf "%.2f", (u+0)/(a+0); else print "n/a" }')
+      pass=$(awk -v r="$ratio" 'BEGIN { print (r != "n/a" && r+0 >= 0.5) ? "✅" : "❌" }')
+      printf '| %-8s | %8.0f | %8.0f | %9s | %-17s |\n' "$scn" "$u" "$a" "$ratio" "$pass"
+    else
+      printf '| %-8s | %8s | %8s | %9s | %-17s |\n' "$scn" "—" "—" "—" "—"
+    fi
+  done
+  echo
+
+  # --- per-run detail links ----------------------------------------------
+  echo "## Per-run artefacts"
+  echo
+  for r in "${succeeded[@]}"; do
+    set -- $r
+    s="$1"; sc="$2"
+    echo "- \`${s}-${sc}/\` — [result.json](${s}-${sc}/result.json), [measure.txt](${s}-${sc}/measure.txt), [server.log](${s}-${sc}/server.log)"
+  done
+  if [[ "${#failed[@]}" -gt 0 ]]; then
+    echo
+    echo "### Failed runs"
+    for r in "${failed[@]}"; do
+      set -- $r
+      s="$1"; sc="$2"
+      echo "- \`${s}-${sc}\` — see \`${s}-${sc}.stdout.log\`"
+    done
+  fi
+} > "$SUMMARY"
+
+# ---------------------------------------------------------------------------
+# Emit machine-readable index.json
+# ---------------------------------------------------------------------------
+
+{
+  echo "{"
+  echo "  \"batch\": \"${BATCH}\","
+  echo "  \"elapsed_seconds\": ${ELAPSED},"
+  echo "  \"runs\": ["
+  first=1
+  for k in "${!by_run[@]}"; do
+    set -- $k
+    s="$1"; sc="$2"
+    rj="${by_run[$k]}"
+    [[ "$first" -eq 1 ]] || echo "    ,"
+    first=0
+    echo "    {"
+    echo "      \"server\":   \"${s}\","
+    echo "      \"scenario\": \"${sc}\","
+    echo "      \"result_path\": \"${s}-${sc}/result.json\","
+    # Inline the result.json contents, indented; simplest is to just paste.
+    awk '/^\{/{p=1} p{print "      " $0} /^\}/{p=0}' "$rj" \
+      | sed '1d' | head -n -1 | sed 's/^/      "result": {/; t; s/^/      /' >/dev/null
+    # Simpler: just reference the file path. The result.json is already
+    # right there. We don't need to inline.
+    echo "    }"
+  done
+  echo "  ]"
+  echo "}"
+} > "$INDEX"
+
+# ---------------------------------------------------------------------------
+# Wrap up
+# ---------------------------------------------------------------------------
+
+echo
+echo "=========================================================="
+echo "run_all: DONE"
+echo "  batch:      ${BATCH}"
+echo "  elapsed:    ${ELAPSED}s"
+echo "  successful: ${#succeeded[@]} / ${total}"
+[[ "${#failed[@]}" -gt 0 ]] && echo "  failed:     ${failed[*]}"
+echo "  summary:    ${SUMMARY}"
+echo "=========================================================="
+echo
+cat "$SUMMARY"

runner.sh

@@ -0,0 +1,367 @@
+#!/usr/bin/env bash
+# urus-bench/runner.sh
+#
+# Runs one (server, scenario) measurement and saves all artefacts under
+# results/${run_id}/. The intent is to make a single run trivially
+# repeatable so the headline table in the bench-spec can be filled in
+# row by row.
+#
+# Usage:
+#   ./runner.sh <server> <scenario> [run_id]
+#
+# server:
+#   urus-mem | urus-sqlite | axum-mem | axum-sqlite | cowboy-mem | cowboy-sqlite
+# scenario:
+#   s1 | s2 | s3 | s4
+# run_id:
+#   optional; defaults to ${date}-${server}-${scenario}
+#
+# Requirements on the host:
+#   - taskset (util-linux)
+#   - wrk2 in PATH    (https://github.com/giltene/wrk2)
+#   - wrk  in PATH    (saturation probe)
+#   - pidstat (sysstat)  -- optional, CPU stats only
+#   - jq                 -- pretty-prints the result.json
+#
+# CPU pinning (defaults; override with SERVER_CPUS / LOADGEN_CPUS):
+#   server:  taskset -c 0-7
+#   loadgen: taskset -c 8-15
+#
+# Probe / measurement times: 30s probe, 30s warm-up, 60s measured (per the
+# bench-spec §1.5). Override with PROBE_SEC / WARMUP_SEC / MEASURE_SEC.
+
+set -euo pipefail
+
+# ---------------------------------------------------------------------------
+# Args / config
+# ---------------------------------------------------------------------------
+
+SERVER="${1:-}"
+SCENARIO="${2:-}"
+RUN_ID="${3:-$(date +%Y%m%d-%H%M%S)-${SERVER}-${SCENARIO}}"
+
+if [[ -z "$SERVER" || -z "$SCENARIO" ]]; then
+  echo "usage: $0 <server> <scenario> [run_id]" >&2
+  echo "  server:   urus-mem | urus-sqlite | axum-mem | axum-sqlite | cowboy-mem | cowboy-sqlite" >&2
+  echo "  scenario: s1 | s2 | s3 | s4" >&2
+  exit 2
+fi
+
+REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+RESULTS_DIR="${REPO_ROOT}/results/${RUN_ID}"
+mkdir -p "$RESULTS_DIR"
+
+SERVER_CPUS="${SERVER_CPUS:-0-7}"
+LOADGEN_CPUS="${LOADGEN_CPUS:-8-15}"
+PROBE_SEC="${PROBE_SEC:-30}"
+WARMUP_SEC="${WARMUP_SEC:-30}"
+MEASURE_SEC="${MEASURE_SEC:-60}"
+PORT="${PORT:-8080}"
+HOST="${HOST:-127.0.0.1:${PORT}}"
+BEARER="${BEARER:-test-token-aaaaaaaaaaaaaaaaaaaa}"
+WRK_THREADS="${WRK_THREADS:-8}"
+WRK_CONNS="${WRK_CONNS:-256}"
+SAT_RATIO="${SAT_RATIO:-0.70}"  # wrk2 target = saturation * SAT_RATIO
+
+# ---------------------------------------------------------------------------
+# Pick server command + lua script
+# ---------------------------------------------------------------------------
+
+case "$SERVER" in
+  urus-mem)
+    SERVER_CMD=("${REPO_ROOT}/target/release/urus-server"
+                "--addr=127.0.0.1:${PORT}" "--store=memory") ;;
+  urus-sqlite)
+    DB="/tmp/urus-bench-${RUN_ID}.sqlite"; rm -f "${DB}"*
+    SERVER_CMD=("${REPO_ROOT}/target/release/urus-server"
+                "--addr=127.0.0.1:${PORT}" "--store=sqlite"
+                "--db-path=${DB}") ;;
+  axum-mem)
+    SERVER_CMD=("${REPO_ROOT}/target/release/axum-server"
+                "--addr=127.0.0.1:${PORT}" "--store=memory") ;;
+  axum-sqlite)
+    DB="/tmp/axum-bench-${RUN_ID}.sqlite"; rm -f "${DB}"*
+    SERVER_CMD=("${REPO_ROOT}/target/release/axum-server"
+                "--addr=127.0.0.1:${PORT}" "--store=sqlite"
+                "--db-path=${DB}") ;;
+  cowboy-mem|cowboy-sqlite)
+    # cowboy-server is a placeholder in this checkout; wire when ready.
+    echo "runner: cowboy backends are not wired yet" >&2
+    exit 3 ;;
+  *)
+    echo "runner: unknown server '${SERVER}'" >&2; exit 2 ;;
+esac
+
+case "$SCENARIO" in
+  s1) LUA="${REPO_ROOT}/loadgen/s1_ping.lua" ;;
+  s2) LUA="${REPO_ROOT}/loadgen/s2_user_get.lua" ;;
+  s3) LUA="${REPO_ROOT}/loadgen/s3_mixed.lua" ;;
+  s4) LUA="${REPO_ROOT}/loadgen/s3_mixed.lua" ;;  # same script, different store
+  *)  echo "runner: unknown scenario '${SCENARIO}'" >&2; exit 2 ;;
+esac
+
+# Compatibility check: s4 requires a sqlite-backed server.
+if [[ "$SCENARIO" == "s4" && "$SERVER" != *-sqlite ]]; then
+  echo "runner: scenario s4 requires a *-sqlite server (got ${SERVER})" >&2
+  exit 2
+fi
+
+# ---------------------------------------------------------------------------
+# Tool checks
+# ---------------------------------------------------------------------------
+
+need() {
+  command -v "$1" >/dev/null || { echo "runner: missing tool: $1" >&2; exit 4; }
+}
+need taskset
+need wrk
+need wrk2
+
+HAS_PIDSTAT=0; command -v pidstat >/dev/null && HAS_PIDSTAT=1
+HAS_JQ=0;      command -v jq      >/dev/null && HAS_JQ=1
+
+# ---------------------------------------------------------------------------
+# Verify the server binary actually exists before launching. Without this
+# check, a missing binary surfaces as "server did not come up" 10 seconds
+# later, which is misleading.
+# ---------------------------------------------------------------------------
+
+SERVER_BIN="${SERVER_CMD[0]}"
+if [[ ! -x "$SERVER_BIN" ]]; then
+  echo "runner: server binary not found or not executable: ${SERVER_BIN}" >&2
+  echo "runner: did you run \`cargo build --release\` in the workspace root?" >&2
+  exit 5
+fi
+
+# ---------------------------------------------------------------------------
+# Boot server (pinned), wait for it to listen
+# ---------------------------------------------------------------------------
+
+SERVER_LOG="${RESULTS_DIR}/server.log"
+echo "runner: launching server on cores ${SERVER_CPUS}: ${SERVER_CMD[*]}"
+taskset -c "$SERVER_CPUS" "${SERVER_CMD[@]}" \
+  > "$SERVER_LOG" 2>&1 &
+SERVER_PID=$!
+
+cleanup() {
+  if kill -0 "$SERVER_PID" 2>/dev/null; then
+    kill "$SERVER_PID" 2>/dev/null || true
+    wait "$SERVER_PID" 2>/dev/null || true
+  fi
+}
+trap cleanup EXIT INT TERM
+
+# Wait up to 10s for the port to accept.
+for _ in $(seq 1 100); do
+  if (echo > /dev/tcp/127.0.0.1/${PORT}) 2>/dev/null; then
+    break
+  fi
+  sleep 0.1
+done
+if ! (echo > /dev/tcp/127.0.0.1/${PORT}) 2>/dev/null; then
+  echo "runner: server did not come up; see ${SERVER_LOG}" >&2
+  exit 5
+fi
+
+# ---------------------------------------------------------------------------
+# Wire-level smoke test — fail fast if the routes don't behave.
+# ---------------------------------------------------------------------------
+
+smoke_curl() {
+  local expected="$1"; shift
+  local got
+  got=$(curl -s -o /dev/null -w "%{http_code}" "$@")
+  if [[ "$got" != "$expected" ]]; then
+    echo "runner: smoke fail: expected ${expected} got ${got} for: $*" >&2
+    exit 6
+  fi
+}
+
+smoke_curl 200 "http://127.0.0.1:${PORT}/ping"
+smoke_curl 200 -H "Authorization: Bearer ${BEARER}" \
+              "http://127.0.0.1:${PORT}/api/v1/users"
+smoke_curl 401 "http://127.0.0.1:${PORT}/api/v1/users"
+
+echo "runner: smoke OK"
+
+# ---------------------------------------------------------------------------
+# Pre-populate store for s2/s3/s4 (s1 doesn't touch the store).
+# ---------------------------------------------------------------------------
+#
+# The s2 / s3 / s4 Lua scripts pick random IDs in [1, 10000]. Against an
+# empty store every GET-by-id is a 404 fast path on most stacks, which is
+# *not* what we want to bench. Seed the store with PREPOP=10000 users
+# (matching the ID range) so GETs hit the actual happy path. This is also
+# why the bench-spec calls for warm-up: pre-population is part of that.
+#
+# For s1 (/ping), skip prepop entirely.
+
+PREPOP="${PREPOP:-10000}"
+if [[ "$SCENARIO" != "s1" && "$PREPOP" -gt 0 ]]; then
+  echo "runner: pre-populating store with ${PREPOP} users"
+  TMP_REQUESTS=$(mktemp)
+  # awk is ~100x faster than a bash for-loop at producing this file.
+  awk -v n="$PREPOP" -v tok="$BEARER" -v port="$PORT" '
+    BEGIN {
+      for (i = 1; i <= n; i++) {
+        printf "url = http://127.0.0.1:%s/api/v1/users\n", port
+        printf "request = POST\n"
+        printf "header = \"Authorization: Bearer %s\"\n", tok
+        printf "header = \"Content-Type: application/json\"\n"
+        printf "data = \"{\\\"name\\\":\\\"u%d\\\",\\\"email\\\":\\\"u%d@x\\\"}\"\n", i, i
+        if (i < n) printf "next\n"
+      }
+    }' > "$TMP_REQUESTS"
+  # Send all curl output (response bodies + status) to the runner log.
+  # -K does not honor a global -o; the cleanest suppression is shell-level.
+  curl -s -K "$TMP_REQUESTS" >> "$SERVER_LOG" 2>&1 || true
+  rm -f "$TMP_REQUESTS"
+  # Verify list has at least one entry; print count for visibility.
+  N=$(curl -s -H "Authorization: Bearer ${BEARER}" \
+        "http://127.0.0.1:${PORT}/api/v1/users" | tr ',' '\n' | grep -c '"id"' || echo 0)
+  echo "runner: store now reports ${N} users (list cap is 100)"
+fi
+
+
+# ---------------------------------------------------------------------------
+# pidstat sampler (background) — CPU% and RSS at 1Hz
+# ---------------------------------------------------------------------------
+
+STATS_LOG="${RESULTS_DIR}/proc-stats.tsv"
+echo -e "ts\tcpu_pct\trss_kb" > "$STATS_LOG"
+(
+  while kill -0 "$SERVER_PID" 2>/dev/null; do
+    ts=$(date +%s)
+    rss=$(awk '/^VmRSS:/ {print $2}' "/proc/${SERVER_PID}/status" 2>/dev/null || echo 0)
+    if [[ "$HAS_PIDSTAT" == "1" ]]; then
+      cpu=$(pidstat -p "$SERVER_PID" 1 1 2>/dev/null \
+              | awk '/Average:/ {print $8}' | head -1)
+    else
+      cpu=""
+    fi
+    echo -e "${ts}\t${cpu}\t${rss}" >> "$STATS_LOG"
+    sleep 1
+  done
+) &
+STATS_PID=$!
+
+# ---------------------------------------------------------------------------
+# Phase 1: saturation probe with wrk (closed-loop peak)
+# ---------------------------------------------------------------------------
+
+echo "runner: probe (${PROBE_SEC}s closed-loop, ${WRK_CONNS} conns)"
+PROBE_OUT="${RESULTS_DIR}/probe.txt"
+taskset -c "$LOADGEN_CPUS" \
+  env HOST="$HOST" BEARER="$BEARER" \
+  wrk -t"$WRK_THREADS" -c"$WRK_CONNS" -d"${PROBE_SEC}s" --latency \
+      -s "$LUA" "http://${HOST}" \
+  > "$PROBE_OUT" 2>&1 || true
+
+PROBE_RPS=$(awk '/Requests\/sec:/ {print $2}' "$PROBE_OUT" | head -1)
+if [[ -z "$PROBE_RPS" ]]; then
+  echo "runner: probe did not report Requests/sec; see ${PROBE_OUT}" >&2
+  exit 7
+fi
+
+# floor(PROBE_RPS * SAT_RATIO) as an integer (wrk2 requires int -R)
+TARGET_RPS=$(awk -v p="$PROBE_RPS" -v r="$SAT_RATIO" \
+               'BEGIN { printf("%d", int(p * r)) }')
+echo "runner: probe RPS=${PROBE_RPS}, target (sustained)=${TARGET_RPS}"
+
+# ---------------------------------------------------------------------------
+# Phase 2: warm-up at target rate (discarded)
+# ---------------------------------------------------------------------------
+
+echo "runner: warm-up (${WARMUP_SEC}s at -R${TARGET_RPS})"
+taskset -c "$LOADGEN_CPUS" \
+  env HOST="$HOST" BEARER="$BEARER" \
+  wrk2 -t"$WRK_THREADS" -c"$WRK_CONNS" -d"${WARMUP_SEC}s" \
+       -R"$TARGET_RPS" -s "$LUA" "http://${HOST}" \
+  > "${RESULTS_DIR}/warmup.txt" 2>&1 || true
+
+# ---------------------------------------------------------------------------
+# Phase 3: measured run with wrk2 (latency-honest)
+# ---------------------------------------------------------------------------
+
+echo "runner: measure (${MEASURE_SEC}s at -R${TARGET_RPS})"
+MEASURE_OUT="${RESULTS_DIR}/measure.txt"
+taskset -c "$LOADGEN_CPUS" \
+  env HOST="$HOST" BEARER="$BEARER" \
+  wrk2 -t"$WRK_THREADS" -c"$WRK_CONNS" -d"${MEASURE_SEC}s" \
+       -R"$TARGET_RPS" --latency \
+       -s "$LUA" "http://${HOST}" \
+  > "$MEASURE_OUT" 2>&1
+
+# ---------------------------------------------------------------------------
+# Phase 4: parse + write result.json
+# ---------------------------------------------------------------------------
+
+# wrk2 output format (excerpt; this regex stack is fragile but works on
+# upstream wrk2's current build):
+#
+#   Requests/sec: 149999.74
+#   Latency Distribution (HdrHistogram - Recorded Latency)
+#    50.000%    0.50ms
+#    75.000%    0.61ms
+#    ...
+#    99.000%    1.83ms
+#    99.900%    4.21ms
+#    99.990%   13.50ms
+#    99.999%   24.50ms
+#  100.000%   31.50ms
+
+extract() {
+  local label="$1"  # e.g. "50.000%"
+  awk -v lbl="$label" '$1 == lbl { print $2; exit }' "$MEASURE_OUT"
+}
+
+SUSTAINED_RPS=$(awk '/Requests\/sec:/ {print $2}' "$MEASURE_OUT" | head -1)
+P50=$(extract "50.000%")
+P90=$(extract "90.000%")
+P99=$(extract "99.000%")
+P999=$(extract "99.900%")
+MAX=$(extract "100.000%")
+NON_2XX=$(awk '/Non-2xx or 3xx responses:/ {print $5}' "$MEASURE_OUT" | head -1)
+# Coerce to a JSON integer; empty (line absent → no errors) or non-numeric
+# becomes 0.
+if ! [[ "$NON_2XX" =~ ^[0-9]+$ ]]; then NON_2XX=0; fi
+
+# Best-effort RSS / CPU summary from the sampler
+MEAN_CPU=$(awk -F'\t' 'NR>1 && $2 != "" { s+=$2; n++ } END { if (n>0) printf("%.1f", s/n); else print "" }' "$STATS_LOG")
+MAX_RSS=$(awk -F'\t' 'NR>1 { if ($3+0 > m) m=$3 } END { print m+0 }' "$STATS_LOG")
+
+cat > "${RESULTS_DIR}/result.json" <<JSON
+{
+  "run_id":         "${RUN_ID}",
+  "server":         "${SERVER}",
+  "scenario":       "${SCENARIO}",
+  "probe_rps":      ${PROBE_RPS},
+  "target_rps":     ${TARGET_RPS},
+  "sustained_rps":  ${SUSTAINED_RPS:-0},
+  "latency": {
+    "p50":   "${P50}",
+    "p90":   "${P90}",
+    "p99":   "${P99}",
+    "p999":  "${P999}",
+    "max":   "${MAX}"
+  },
+  "non_2xx":        ${NON_2XX},
+  "mean_cpu_pct":   "${MEAN_CPU}",
+  "max_rss_kb":     ${MAX_RSS}
+}
+JSON
+
+# ---------------------------------------------------------------------------
+# Done
+# ---------------------------------------------------------------------------
+
+kill "$STATS_PID" 2>/dev/null || true
+wait "$STATS_PID" 2>/dev/null || true
+
+echo
+echo "runner: DONE -> ${RESULTS_DIR}"
+if [[ "$HAS_JQ" == "1" ]]; then
+  jq . "${RESULTS_DIR}/result.json"
+else
+  cat "${RESULTS_DIR}/result.json"
+fi

shell.nix

@@ -0,0 +1,66 @@
+# urus-bench shell.nix
+#
+# Assumes you already have a working rust toolchain (cargo, rustc) and
+# elixir/erlang in your environment. This shell adds:
+#
+#   - the load generators (wrk, wrk2)
+#   - process introspection (pidstat, taskset)
+#   - small conveniences (jq, sqlite CLI for poking at the WAL'd DBs)
+#   - C toolchain bits so `rusqlite` (bundled SQLite) and `sqlx` compile
+#
+# Drop into the workspace root and run `nix-shell`. Then:
+#   cargo build --release
+#   ./runner.sh urus-mem s1
+#
+# For cowboy-server you'll use your existing rebar3/elixir setup; this
+# shell deliberately doesn't pin a beam toolchain since you have one.
+
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.mkShell {
+  name = "urus-bench";
+
+  # buildInputs vs nativeBuildInputs: for a developer shell the
+  # distinction barely matters; either works. Keeping everything in
+  # `packages` since that's the recommended modern form.
+  packages = with pkgs; [
+    # Load generators (the whole point of this shell).
+    wrk     # closed-loop, used as the saturation probe
+    wrk2    # constant-rate, latency-honest measurement
+
+    # Runner deps.
+    sysstat        # provides pidstat for CPU sampling
+    util-linux     # provides taskset for CPU pinning
+    jq             # pretty-prints result.json (runner falls back without it)
+    curl           # the prepopulate step uses curl --config (-K)
+    gawk           # explicit; busybox awk lacks some printf bits we use
+
+    # SQLite tooling — handy for inspecting WAL'd DBs between runs.
+    # rusqlite/sqlx bring their own embedded sqlite so this is *not* a
+    # build dep, just a CLI for poking around.
+    sqlite
+
+    # C toolchain — rusqlite's `bundled` feature compiles sqlite from
+    # source, and sqlx's macros also need a working cc. Without these
+    # the rust build fails on a fresh nix shell.
+    pkg-config
+    gcc
+  ];
+
+  # Environment hints. Nothing strictly required, but these defaults
+  # match what runner.sh already expects when invoked without env
+  # overrides, so a fresh shell `just works` for `./runner.sh ...`.
+  BEARER = "test-token-aaaaaaaaaaaaaaaaaaaa";
+
+  shellHook = ''
+    echo "urus-bench shell:"
+    echo "  wrk       $(wrk --version 2>&1 | head -1 || echo missing)"
+    echo "  wrk2      $(wrk2 --version 2>&1 | head -1 || echo missing)"
+    echo "  pidstat   $(command -v pidstat || echo missing)"
+    echo "  taskset   $(command -v taskset || echo missing)"
+    echo "  cargo     $(command -v cargo   || echo 'NOT FOUND — expected on host')"
+    echo
+    echo "Build:  cargo build --release"
+    echo "Run:    ./runner.sh urus-mem s1"
+  '';
+}

spin_ab_urus.sh

@@ -0,0 +1,244 @@
+#!/usr/bin/env bash
+# spin_ab_urus.sh — A/B the RFC 004 spinning policy on the *realistic* urus
+# workload (not the multi_scheduler microbench).
+#
+# It does exactly what the handoff asks: check out the pre-spin smarm commit,
+# run the urus benches; check out the latest smarm commit, run them again;
+# then print a before/after comparison.
+#
+#   BEFORE = b0c9685   (pre-spin: no spinning code exists at all)
+#   AFTER  = current smarm HEAD   (spin defaults on + N=1 fix; e.g. 2f011f6)
+#
+# smarm is a *path dependency* of urus, which is a path dependency of
+# urus-benches (all three are siblings). So we A/B by checking out smarm at
+# each sha and rebuilding urus-benches; urus itself is held fixed — only the
+# smarm under it changes between A and B. Each (commit, scenario, cores) run
+# goes through the existing runner.sh (saturation probe -> warmup -> wrk2
+# latency-honest measure) and lands a result.json; analyze_spin_ab_urus.py
+# pairs them up at the end.
+#
+# Scenarios (per RECON §6.4): s2 (router+auth, no store) and s3 (memory store,
+# the headline). Server is urus-mem for both. We do NOT touch s4/sqlite.
+#
+# Core sweep: the spin gate is active at 2-4 schedulers and inert at 1 and
+# >=5. We sweep 1/2/4/6 server cores: 2 and 4 are gate-ACTIVE, 1 and 6 are
+# inert controls -- 6 also being a *saturating* control, since the old 8-core
+# point couldn't be saturated by an 8-core loadgen (it plateaued ~102k rps,
+# loadgen-bound). Server is pinned to cores 0..N-1; the load generator gets
+# its own disjoint cores (LOADGEN_CPUS), sized ~>=2x the server cores per the
+# saturation goal while leaving cores free for the OS.
+#
+# Usage:
+#   ./spin_ab_urus.sh                      # full A/B, defaults
+#   ./spin_ab_urus.sh --quick              # short timings (15s phases)
+#   ./spin_ab_urus.sh --dry-run            # print the plan, run nothing
+#   CORES="2 4" SCENARIOS="s3" ./spin_ab_urus.sh
+#   BEFORE=b0c9685 AFTER=2f011f6 ./spin_ab_urus.sh
+#   ./spin_ab_urus.sh --with-axum-control  # also run axum-mem (smarm-free
+#                                          # invariant; should be flat A vs B)
+#
+# Env knobs (all overridable):
+#   BEFORE / AFTER     smarm commit-ishes              (default b0c9685 / HEAD)
+#   SCENARIOS          space-separated                 (default "s2 s3")
+#   CORES              server core counts to sweep     (default "1 2 4 6")
+#   LOADGEN_CPUS       loadgen taskset range           (default "8-23" = 16 cores)
+#   WRK_THREADS        loadgen wrk/wrk2 threads         (default 16)
+#   WRK_CONNS          loadgen open connections         (default 512)
+#   SERVER             memory server backend           (default urus-mem)
+#   PROBE_SEC/WARMUP_SEC/MEASURE_SEC/SAT_RATIO/PREPOP/WRK_CONNS/WRK_THREADS
+#                      passed straight through to runner.sh
+#   SMARM_DIR          override smarm location (default: sibling ../smarm)
+#   OUTDIR             results dir (default: results/spin_ab_urus_<ts>)
+
+set -euo pipefail
+
+# ---------------------------------------------------------------------------
+# Locate the pieces
+# ---------------------------------------------------------------------------
+
+BENCH_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"   # urus-benches
+RUNNER="${BENCH_DIR}/runner.sh"
+ANALYZER="${BENCH_DIR}/analyze_spin_ab_urus.py"
+SMARM_DIR="${SMARM_DIR:-$(cd "${BENCH_DIR}/../smarm" 2>/dev/null && pwd || true)}"
+
+if [[ ! -x "$RUNNER" ]]; then
+  echo "ERROR: runner.sh not found/executable at $RUNNER" >&2; exit 1
+fi
+if [[ -z "$SMARM_DIR" || ! -d "$SMARM_DIR/.git" ]]; then
+  echo "ERROR: smarm git repo not found (looked for sibling ../smarm). Set SMARM_DIR." >&2
+  exit 1
+fi
+
+# ---------------------------------------------------------------------------
+# Config
+# ---------------------------------------------------------------------------
+
+BEFORE="${BEFORE:-b0c9685}"
+# AFTER defaults to whatever smarm is currently on ("the latest").
+AFTER_DEFAULT="$(git -C "$SMARM_DIR" rev-parse --short HEAD)"
+AFTER="${AFTER:-$AFTER_DEFAULT}"
+
+SCENARIOS="${SCENARIOS:-s2 s3}"
+CORES="${CORES:-1 2 4 6}"
+SERVER="${SERVER:-urus-mem}"
+LOADGEN_CPUS="${LOADGEN_CPUS:-8-23}"
+
+# Loadgen sizing: ~2x loadgen cores per server core. 16 cores covers the
+# 6-core server at ~2.7x and the 4-core at 4x. Threads track the core count;
+# connections bumped so the probe can actually find the server's peak.
+export WRK_THREADS="${WRK_THREADS:-16}"
+export WRK_CONNS="${WRK_CONNS:-512}"
+
+QUICK=0
+DRY=0
+WITH_AXUM=0
+for arg in "$@"; do
+  case "$arg" in
+    --quick)             QUICK=1 ;;
+    --dry-run|-n)        DRY=1 ;;
+    --with-axum-control) WITH_AXUM=1 ;;
+    -h|--help)           sed -n '2,/^set -euo/p' "$0" | sed 's/^# \{0,1\}//; $d'; exit 0 ;;
+    *) echo "unknown arg: $arg" >&2; exit 2 ;;
+  esac
+done
+
+if [[ "$QUICK" == "1" ]]; then
+  export PROBE_SEC="${PROBE_SEC:-15}"
+  export WARMUP_SEC="${WARMUP_SEC:-15}"
+  export MEASURE_SEC="${MEASURE_SEC:-15}"
+fi
+
+TS="$(date +%Y%m%d-%H%M%S)"
+OUTDIR="${OUTDIR:-${BENCH_DIR}/results/spin_ab_urus_${TS}}"
+
+NPROC="$(nproc)"
+# Loadgen low core, for an overlap sanity check against the server range.
+LG_LO="${LOADGEN_CPUS%%-*}"
+
+SERVERS_TO_RUN=("$SERVER")
+[[ "$WITH_AXUM" == "1" ]] && SERVERS_TO_RUN+=("axum-mem")
+
+echo ">>> smarm:     $SMARM_DIR"
+echo ">>> BEFORE=$BEFORE  AFTER=$AFTER"
+echo ">>> servers:   ${SERVERS_TO_RUN[*]}"
+echo ">>> scenarios: $SCENARIOS"
+echo ">>> cores:     $CORES"
+echo ">>> loadgen:   cpus=$LOADGEN_CPUS threads=$WRK_THREADS conns=$WRK_CONNS"
+echo ">>> machine:   $NPROC cores"
+echo ">>> outdir:    $OUTDIR"
+[[ "$QUICK" == "1" ]] && echo ">>> --quick: probe/warmup/measure = ${PROBE_SEC}/${WARMUP_SEC}/${MEASURE_SEC}s"
+echo
+
+# server core range for a given count: "0" for 1, else "0-(N-1)"
+server_cpus() { (( $1 == 1 )) && echo "0" || echo "0-$(( $1 - 1 ))"; }
+
+# ---------------------------------------------------------------------------
+# Safety: refuse a dirty smarm tree; restore original ref on exit
+# ---------------------------------------------------------------------------
+
+if ! git -C "$SMARM_DIR" diff-index --quiet HEAD -- 2>/dev/null; then
+  echo "ERROR: smarm working tree is dirty. Commit/stash before A/B so checkouts are safe." >&2
+  git -C "$SMARM_DIR" status --short >&2
+  exit 1
+fi
+ORIG_REF="$(git -C "$SMARM_DIR" symbolic-ref --quiet --short HEAD || git -C "$SMARM_DIR" rev-parse HEAD)"
+restore_smarm() {
+  echo
+  echo ">>> restoring smarm to $ORIG_REF"
+  git -C "$SMARM_DIR" checkout --quiet "$ORIG_REF" 2>/dev/null \
+    || echo "WARN: could not restore $ORIG_REF — smarm is on $(git -C "$SMARM_DIR" rev-parse --short HEAD)" >&2
+}
+[[ "$DRY" == "0" ]] && trap restore_smarm EXIT
+
+# Overlap sanity: server top core must be below the loadgen range.
+MAX_SRV=0; for c in $CORES; do (( c > MAX_SRV )) && MAX_SRV=$c; done
+if [[ "$LG_LO" =~ ^[0-9]+$ ]] && (( MAX_SRV - 1 >= LG_LO )); then
+  echo "WARN: server cores reach $((MAX_SRV-1)) which overlaps LOADGEN_CPUS=$LOADGEN_CPUS." >&2
+  echo "      set LOADGEN_CPUS to a disjoint range (two-process discipline)." >&2
+fi
+if (( MAX_SRV > NPROC )); then
+  echo "WARN: sweep asks for up to ${MAX_SRV} server cores but machine has ${NPROC}." >&2
+fi
+
+mkdir -p "$OUTDIR"
+
+# ---------------------------------------------------------------------------
+# Run one commit across the (server x scenario x cores) sub-matrix
+# ---------------------------------------------------------------------------
+
+run_commit() {
+  local sha="$1" label="$2"
+  echo "============================================================"
+  echo ">>> $label: checking out smarm $sha and rebuilding urus-benches"
+  echo "============================================================"
+  if [[ "$DRY" == "1" ]]; then
+    echo "    [dry] git -C $SMARM_DIR checkout $sha"
+    echo "    [dry] (cd $BENCH_DIR && cargo build --release)"
+  else
+    git -C "$SMARM_DIR" checkout --quiet "$sha"
+    # urus is a path dep of urus-benches and smarm a path dep of urus, so a
+    # workspace release build picks up the swapped smarm. cargo refingerprints
+    # on the changed sources.
+    ( cd "$BENCH_DIR" && cargo build --release ) 2>&1 | tail -3
+  fi
+
+  for srv in "${SERVERS_TO_RUN[@]}"; do
+    for scn in $SCENARIOS; do
+      for c in $CORES; do
+        local scpus; scpus="$(server_cpus "$c")"
+        local run_id="${label}__${srv}__${scn}__c${c}"
+        local dest="${OUTDIR}/${label}/${srv}-${scn}-c${c}"
+        echo ">>> $label  $srv  $scn  server-cores=$c (taskset $scpus)  loadgen=$LOADGEN_CPUS"
+        if [[ "$DRY" == "1" ]]; then
+          echo "    [dry] SERVER_CPUS=$scpus LOADGEN_CPUS=$LOADGEN_CPUS $RUNNER $srv $scn $run_id"
+          continue
+        fi
+        mkdir -p "$dest"
+        if SERVER_CPUS="$scpus" LOADGEN_CPUS="$LOADGEN_CPUS" \
+             "$RUNNER" "$srv" "$scn" "$run_id" > "${dest}/runner.log" 2>&1; then
+          if [[ -d "${BENCH_DIR}/results/${run_id}" ]]; then
+            mv "${BENCH_DIR}/results/${run_id}/"* "$dest/" 2>/dev/null || true
+            rmdir "${BENCH_DIR}/results/${run_id}" 2>/dev/null || true
+          fi
+          local rps p99 non2xx ms errpct
+          rps=$(awk -F'[:,]' '/"sustained_rps"/ {gsub(/[ "]/,"",$2); print $2; exit}' "${dest}/result.json" 2>/dev/null || echo "?")
+          p99=$(awk -F'"' '/"p99"/ {print $4; exit}' "${dest}/result.json" 2>/dev/null || echo "?")
+          non2xx=$(awk -F'[:,]' '/"non_2xx"/ {gsub(/[ "]/,"",$2); print $2; exit}' "${dest}/result.json" 2>/dev/null || echo 0)
+          ms="${MEASURE_SEC:-60}"
+          # error rate vs approx total requests (sustained_rps * measure_sec).
+          errpct=$(awk -v n="$non2xx" -v r="$rps" -v s="$ms" \
+                     'BEGIN { t=r*s; if (t>0) printf "%.1f", 100*n/t; else print "?" }')
+          if awk -v e="$errpct" 'BEGIN { exit !(e+0 > 2.0) }' 2>/dev/null; then
+            echo "      -> VOID: ${errpct}% non-2xx (${non2xx}) — server is erroring, not serving. rps=${rps} is meaningless."
+          else
+            echo "      -> sustained=${rps} rps  p99=${p99}  (non-2xx ${errpct}%)"
+          fi
+        else
+          echo "      -> FAILED (see ${dest}/runner.log)"
+        fi
+      done
+    done
+  done
+}
+
+run_commit "$BEFORE" "before"
+run_commit "$AFTER"  "after"
+
+[[ "$DRY" == "1" ]] && { echo; echo ">>> dry run complete (nothing executed, smarm untouched)."; exit 0; }
+
+# ---------------------------------------------------------------------------
+# Analyze
+# ---------------------------------------------------------------------------
+
+echo
+echo "============================================================"
+echo ">>> A/B comparison"
+echo "============================================================"
+if command -v python3 >/dev/null && [[ -f "$ANALYZER" ]]; then
+  python3 "$ANALYZER" "$OUTDIR" --before before --after after | tee "${OUTDIR}/comparison.txt"
+else
+  echo "(python3 or analyzer missing; raw result.json files are under $OUTDIR)"
+fi
+
+echo
+echo ">>> DONE. results: $OUTDIR"

urus-bench-spec.md

@@ -0,0 +1,462 @@
+# Urus v1 Benchmark Plan
+
+> Goal: produce defensible HTTP/1.1 numbers for **urus v0.1**, framed by
+> **hyper** (Rust async reference) above and **cowboy** (BEAM reference)
+> below. Per the urus spec: target is **within 2x of hyper**; significantly
+> outperform Cowboy 2 on HTTP/1.1.
+
+The benchmark is layered, smallest-first, so we can see *what* costs what:
+the plug indirection, the connection-actor context switch, the pipeline
+middleware stack, and finally the DB layer.
+
+---
+
+## 1. Design considerations (read first)
+
+### 1.1 Don't bench the DB
+
+A "realistic" load that hits a DB on every request will almost certainly
+bench the DB instead of the HTTP stack. SQLite single-writer contention is
+the most likely culprit. The plan is:
+
+- Tier the scenarios. The cheapest scenario does **no DB work** so we get a
+  clean read on the HTTP stack itself. Each subsequent tier adds one source
+  of work and is compared against the previous tier — the *delta* is the
+  cost of that layer.
+- Instrument the handler with a histogram of "handler-inside time"
+  (microseconds spent between the start of the handler and the moment it
+  returns the `Conn`). If at high concurrency the handler-inside time
+  dominates request latency, we're benching the DB / the in-memory actor /
+  the auth check, not the framework. Report this metric *next to* RPS.
+- For the DB tier, use **SQLite in WAL mode**, with one dedicated writer
+  actor and N reader connections (or a single-conn reader pool with `BEGIN
+  IMMEDIATE` semantics). This matches urus's actor-style data ownership and
+  is fair to all three frameworks.
+- Cross-check by also running each scenario with the in-memory store from
+  `examples/crud.rs`. If urus's in-memory and SQLite numbers are close at
+  low write ratios, the DB is not the bottleneck; if SQLite is much lower,
+  it is.
+
+### 1.2 wrk2, not wrk
+
+`wrk` (Glenn's original) is closed-loop: it sends a new request only after
+the previous one returns. Tail latency in that model is meaningless
+("coordinated omission" — the load generator stalls when the server stalls,
+so it can't *measure* the stall). We use **wrk2** with a fixed rate `-R`.
+
+For a smoke-test top-end RPS we'll also run plain `wrk` at maximum offered
+load to find each server's *saturation point*. That number is then used to
+pick the target rate for wrk2 — typically 60–80% of saturation, where tail
+latency is the actual measurement of interest.
+
+Cross-checks: `oha` (open-loop, HDR-histogram output) and `rewrk`.
+
+### 1.3 Equivalent stacks across servers
+
+The bench is unfair unless the middleware stack is materially the same on
+all three. Spec:
+
+- Request logger (writes to a bounded ring buffer in memory; **no stdout**,
+  which would skew everything).
+- Request ID middleware (generates a short ID, sets a response header).
+- Bearer token auth (constant-time compare against a fixed valid token).
+- JSON request/response on the write paths.
+- Router with at least one literal route, one parameterised route, and one
+  POST route.
+
+Cowboy's idiomatic equivalent is `cowboy_router` + handler modules + an
+`onrequest` hook for auth. Hyper's idiomatic equivalent is **axum**: it
+exposes the closest analogue to urus's pipeline (`tower::Service` + layers
++ Router). We bench against axum, and note that "raw hyper" would be 10–20%
+faster but is not a fair comparison to a routing+middleware stack.
+
+### 1.4 Two-process discipline
+
+Server and load generator run on the **same host but with pinned, disjoint
+CPU sets** to avoid each starving the other. On a 16-core box:
+
+- Server: `taskset -c 0-7`
+- Loadgen: `taskset -c 8-15`
+
+This matters more than it sounds: with both on all cores, you measure the
+loadgen's scheduling as much as the server's.
+
+### 1.5 Warm-up
+
+Each run is `30s warm-up + 60s measured`. The warm-up is necessary because:
+- TCP window scaling needs time to ramp.
+- Page-fault costs for the read buffers happen once.
+- BEAM in particular has a JIT (BeamAsm) that benefits from warm-up.
+
+Save raw HDR histograms (wrk2 emits one); aggregate p50/p95/p99/p99.9/max.
+
+### 1.6 What we don't measure (yet)
+
+- TLS: deferred per urus spec (v2+).
+- HTTP/2: deferred per urus spec (v2).
+- WebSocket: deferred (v3).
+- Cold-start / spawn cost: orthogonal to the steady-state question this
+  bench answers.
+
+---
+
+## 2. Scenarios
+
+Four scenarios, ordered cheapest to most realistic. Each is run against
+each framework. Each measures the **delta** over the previous one.
+
+### S1: `GET /ping` — naked hello world
+
+- Pipeline: a single handler. No logger, no auth, no router.
+- Response: `200 OK`, body `pong` (4 bytes), `content-type: text/plain`.
+- Measures: raw protocol throughput. The floor on framework overhead.
+- Connection: keep-alive (default in HTTP/1.1).
+
+This is the number to compare against hyper's `hello` benchmark. The urus
+spec target is "within 2x". The plug pipeline isn't really exercised here —
+that's deliberate. S1 isolates the connection actor + parser + serialiser.
+
+### S2: `GET /api/v1/users/:id` — router + middleware, no DB
+
+- Pipeline: `logger → request_id → auth → router`.
+- Route: `GET /api/v1/users/:id` returns a hard-coded `User` struct
+  serialised to JSON. The `:id` is echoed into the response so the
+  serialiser cannot const-fold it away.
+- Bearer token check: a known good token sent in the `Authorization`
+  header. Mismatch → 401 + halt.
+- Measures: the cost of the pipeline (4 plug hops) and the router lookup.
+  This is where urus's spec budget ("one vtable dispatch per plug per
+  request") gets tested.
+- Connection: keep-alive.
+
+Expected: lower RPS than S1 by a measurable but non-catastrophic margin (a
+few % to maybe 20%). If S2 is half of S1, something is allocating per
+request.
+
+### S3: `POST /api/v1/users` + `GET /api/v1/users/:id` — in-memory store
+
+- Pipeline: same as S2.
+- Routes:
+  - `POST /api/v1/users` with a small JSON body (`{"name":"alice","email":"a@x"}`).
+  - `GET  /api/v1/users/:id`.
+  - `GET  /api/v1/users` (list, capped at 100).
+- Store: in-memory actor (urus: the actor from `examples/crud.rs`; hyper:
+  `tokio::sync::Mutex<HashMap>`; cowboy: a `gen_server`). No persistence.
+- Traffic mix: **80% GET single, 15% GET list, 5% POST**. This is the
+  typical web-app shape and exposes the message-passing path on urus
+  without making writes the bottleneck.
+- Measures: actor channel round-trip vs. mutex contention. Urus does a
+  channel send-recv to its store; hyper holds a brief mutex. The bench
+  shows the cost of message passing vs. the cost of contention as
+  concurrency rises.
+- Connection: keep-alive.
+
+### S4: Same as S3, with SQLite (WAL)
+
+- Same routes and mix as S3.
+- Backing store:
+  - urus: one writer actor owning a write connection; reads go through a
+    pool of N=`min(cpus, 4)` read-only connections (each held by its own
+    actor, requested via a worker pool). All `BEGIN IMMEDIATE`.
+  - hyper/axum: `sqlx::SqlitePool` with WAL + busy_timeout.
+  - cowboy: `esqlite` with the same WAL config; pool via `poolboy`.
+- Measures: realism. We expect everyone to be much lower here. If the
+  three framework numbers *converge*, the DB is the bottleneck and the
+  framework comparison can't be made from this scenario alone — that's
+  the answer S4 might give us, and it's still useful information.
+
+In **all four scenarios** the handler instruments
+`handler_microseconds_histogram` so we can detect DB domination.
+
+---
+
+## 3. The middleware stack (spec for all three implementations)
+
+Each implementation MUST expose these middlewares with materially identical
+behaviour. The wire-level outputs (status codes, body shapes, headers) MUST
+match — verified by a small `curl`-based smoke test before each bench run.
+
+### 3.1 Logger
+
+- Captures: `method`, `path`, `status`, `elapsed_us`.
+- Writes into a **bounded ring buffer in memory** (e.g. `crossbeam::ArrayQueue<LogEntry>` for Rust, an ETS table for cowboy with capped size).
+- Does **not** touch stdout, stderr, or the filesystem during the run.
+- The buffer is drained on shutdown to a file for inspection.
+
+### 3.2 Request ID
+
+- 12-byte random ID, base32-encoded.
+- Set as response header `x-request-id`.
+- Generated from a thread-local fast RNG (avoid the global `rand::thread_rng()` mutex on Rust; use SplitMix64 seeded once per actor/task).
+
+### 3.3 Auth
+
+- Reads `Authorization: Bearer <token>` from request headers.
+- Compares against a fixed token (configured at startup) using
+  **constant-time compare** (`subtle::ConstantTimeEq` on Rust;
+  `crypto:hash`-based on BEAM is fine — the constant-time property is
+  pedagogical here, not a security claim).
+- On mismatch: `401`, body `{"error":"unauthorized"}`, halt the pipeline.
+- The bench load generator always sends the valid token (we are not
+  benching the failure path).
+
+### 3.4 Router
+
+- Methods: GET, POST, PUT, DELETE.
+- Patterns: `/api/v1/users`, `/api/v1/users/:id`, `/ping`.
+- 404 on no match; 405 on method-mismatch (urus already does this).
+
+### 3.5 JSON
+
+- `serde_json` for Rust, `jsx` or `jsone` for BEAM.
+- Bodies are small: well under 1 KiB for the user payload.
+
+---
+
+## 4. Queries (load-gen scripts)
+
+`wrk2` takes a Lua script. Below are the four scripts. They share a single
+common header script (`common.lua`) for token + content-type.
+
+### `common.lua`
+
+```lua
+-- Shared header config; included by every script below.
+local M = {}
+M.token = os.getenv("BEARER") or "test-token-aaaaaaaaaaaaaaaaaaaa"
+M.headers = {
+  ["Authorization"] = "Bearer " .. M.token,
+  ["Connection"]    = "keep-alive",
+  ["Host"]          = os.getenv("HOST") or "127.0.0.1:8080",
+}
+return M
+```
+
+### `s1_ping.lua` — S1 ping, no auth header (it's a naked endpoint)
+
+```lua
+wrk.method = "GET"
+wrk.path   = "/ping"
+wrk.headers["Connection"] = "keep-alive"
+```
+
+Invocation:
+
+```sh
+# Saturation probe (closed-loop wrk):
+wrk -t8 -c256 -d60s --latency http://127.0.0.1:8080/ping
+
+# Latency-honest measurement (wrk2, target rate from probe):
+wrk2 -t8 -c256 -d60s -R200000 --latency -s s1_ping.lua \
+  http://127.0.0.1:8080
+```
+
+### `s2_user_get.lua` — single-route GET with middleware
+
+```lua
+local common = require("common")
+wrk.method  = "GET"
+wrk.headers = common.headers
+
+-- Spread :id across 10_000 values so per-id caches can't trivially win.
+math.randomseed(os.time() + os.getpid())
+request = function()
+  local id = math.random(1, 10000)
+  return wrk.format(nil, "/api/v1/users/" .. id)
+end
+```
+
+Invocation:
+
+```sh
+wrk2 -t8 -c256 -d60s -R150000 --latency -s s2_user_get.lua \
+  http://127.0.0.1:8080
+```
+
+### `s3_mixed.lua` — 80% GET-one / 15% GET-list / 5% POST
+
+```lua
+local common = require("common")
+wrk.headers = common.headers
+wrk.headers["Content-Type"] = "application/json"
+
+math.randomseed(os.time() + os.getpid())
+local body_pool = {}
+for i = 1, 64 do
+  body_pool[i] = string.format(
+    [[{"name":"user%d","email":"u%d@example.test"}]], i, i)
+end
+
+request = function()
+  local r = math.random()
+  if r < 0.80 then
+    return wrk.format("GET", "/api/v1/users/" .. math.random(1, 10000))
+  elseif r < 0.95 then
+    return wrk.format("GET", "/api/v1/users")
+  else
+    local body = body_pool[math.random(1, #body_pool)]
+    return wrk.format("POST", "/api/v1/users", nil, body)
+  end
+end
+```
+
+Invocation: same shape as s2, lower `-R` (writes are slower).
+
+```sh
+wrk2 -t8 -c512 -d60s -R80000 --latency -s s3_mixed.lua \
+  http://127.0.0.1:8080
+```
+
+### `s4_mixed_sqlite.lua`
+
+Identical to `s3_mixed.lua`. Only the server's backing store differs.
+
+```sh
+wrk2 -t8 -c512 -d60s -R20000 --latency -s s4_mixed_sqlite.lua \
+  http://127.0.0.1:8080
+```
+
+(`-R20000` is a guess; the real number comes from a `wrk` probe of each
+framework first.)
+
+---
+
+## 5. Implementation plan
+
+Three sibling crates / projects under a `urus-bench/` workspace, each
+exposing the same routes and middleware:
+
+```
+urus-bench/
+├── urus-server/      # Rust, urus
+├── axum-server/      # Rust, hyper via axum
+└── cowboy-server/    # Erlang/OTP, cowboy 2
+```
+
+Plus:
+
+```
+urus-bench/
+├── loadgen/          # wrk2 scripts (common.lua, s1..s4 above)
+├── runner.sh         # orchestrates pin-cpu, warm-up, measurement, save HDR
+└── results/          # one subdir per run: ${date}-${server}-${scenario}/
+```
+
+The runner:
+
+1. Boots the target server pinned to cores 0-7.
+2. `curl`-smoke-tests every route.
+3. Probes saturation with `wrk` at a high `-c`.
+4. Reads back the saturation RPS and chooses 70% of it for wrk2.
+5. Runs wrk2 with HDR output (`--latency`), captures stdout + HDR file.
+6. Greps server process for RSS (`/proc/$pid/status`) and CPU (`pidstat -p $pid 1`) during the run.
+7. Saves everything under `results/${run_id}/`.
+8. Kills server, sleeps 5s, moves on.
+
+### 5.1 urus-server
+
+Port `examples/crud.rs` with:
+
+- Routes adjusted to `/api/v1/users{,/:id}` and `/ping`.
+- Logger replaced with a ring-buffer-backed plug.
+- New `request_id` and `auth` plugs.
+- Switchable backing store: `--store=memory` (the existing actor) or
+  `--store=sqlite` (a new actor wrapping `rusqlite` in WAL).
+
+For SQLite on urus: spawn one writer actor + 4 reader actors, each owning
+its own `rusqlite::Connection`. Handlers route reads to a free reader via
+a worker-pool channel, writes to the writer. Pool selection is FIFO over a
+single shared `Receiver<RequestForReader>` — readers race to receive, which
+is exactly what smarm's MPSC gives for free.
+
+### 5.2 axum-server
+
+Standard axum + tokio multi-thread. Same routes. Layers: `Logger`,
+`SetRequestIdLayer`, `RequireAuthorizationLayer`. State: `sqlx::SqlitePool`
+for S4, `Arc<RwLock<HashMap>>` for S3.
+
+### 5.3 cowboy-server
+
+Standard cowboy 2 with `cowboy_router`. Handlers as `cowboy_handler`
+modules. Auth as an `onrequest`-style middleware. Store: a `gen_server`
+for S3, `esqlite` + `poolboy` for S4.
+
+Build with `rebar3`, run with `+S 8 +sbt db` (8 schedulers, scheduler-thread
+binding) under the same `taskset -c 0-7`.
+
+---
+
+## 6. Metrics and reporting
+
+Per (server × scenario) run, capture and report:
+
+| Metric                      | How                                            |
+|-----------------------------|------------------------------------------------|
+| RPS (saturation, `wrk`)     | `wrk -c256 -d60s` — closed-loop peak           |
+| RPS (sustained, `wrk2`)     | `wrk2 -R$target -d60s` at 70% of saturation    |
+| p50 / p95 / p99 / p99.9 / max latency | HDR histogram from wrk2                |
+| Server CPU%                 | `pidstat -p $pid 1 60` → mean over run         |
+| Server RSS                  | `/proc/$pid/status` `VmRSS` sampled at 1 Hz    |
+| Handler-inside p99 (µs)     | server-side histogram, emitted to ring buffer  |
+| Dropped/errored requests    | wrk2's "Non-2xx or 3xx responses"              |
+
+The headline table:
+
+|                    | urus | axum | cowboy |
+|--------------------|------|------|--------|
+| S1 RPS (sat)       |      |      |        |
+| S1 p99 @ 70%       |      |      |        |
+| S2 RPS (sat)       |      |      |        |
+| S2 p99 @ 70%       |      |      |        |
+| S3 RPS (sat)       |      |      |        |
+| S3 p99 @ 70%       |      |      |        |
+| S4 RPS (sat)       |      |      |        |
+| S4 p99 @ 70%       |      |      |        |
+| urus / axum (S1)   |  —   |      |   —    |
+| urus / axum (S2)   |  —   |      |   —    |
+
+Pass/fail per the urus spec:
+
+- **S1**: urus RPS ≥ 50% of axum RPS (within 2x).
+- **S2**: urus RPS ≥ 50% of axum RPS.
+- **All scenarios**: urus RPS > cowboy RPS by a clear margin (native
+  expectation).
+- **All scenarios**: urus p99 < 2× axum p99 at the same offered rate.
+- Handler-inside p99 ≪ end-to-end p99 in S1/S2 (proves we're benching the
+  framework, not the handler).
+
+---
+
+## 7. Order of operations (suggested)
+
+1. Build `urus-server` with S1 (`/ping`) only. Run S1 against it. Make
+   sure the saturation number is plausible (tens to hundreds of kRPS on
+   a decent box).
+2. Build `axum-server` with S1. Run S1. Sanity-check the ratio against
+   public hyper hello-world numbers (axum should land near hyper).
+3. Add the middleware stack to both, run S2, capture deltas.
+4. Add the in-memory store, run S3.
+5. Bring up `cowboy-server` and bring all three up to S3.
+6. Add SQLite to all three; run S4.
+7. Write the headline table; produce HDR plots from the saved files
+   (gnuplot or a tiny Python script — wrk2 ships an HDR-plot helper).
+
+If at any point a tier's results are dominated by a non-framework cost
+(handler-inside p99 ≥ ~50% of end-to-end p99), stop and instrument before
+moving on. That's the whole point of tiering.
+
+---
+
+## 8. Open questions deliberately left for later
+
+- Whether to also bench under `tc`-induced packet loss / RTT. The current
+  setup uses loopback, which is a generous environment. A loopback win is
+  necessary but not sufficient for "fast on the real network".
+- Whether to bench HTTP/1.1 pipelining (multiple in-flight requests per
+  connection without waiting). urus claims it's a non-goal-for-now, and
+  axum/hyper don't pipeline either, so the comparison is moot — but it's
+  worth a note.
+- Whether to add a "slow handler" scenario (one route that sleeps 50ms)
+  to demonstrate urus's blocking-handler-without-thread-pool claim. That's
+  more of a *qualitative* demo than a throughput bench, but it's the kind
+  of thing reviewers ask about.

urus-server/Cargo.toml

@@ -0,0 +1,35 @@
+[package]
+name = "urus-server"
+version = "0.1.0"
+edition = "2021"
+rust-version = "1.95"
+
+[dependencies]
+# Path deps point at the user's local checkouts; adjust if your tree
+# differs. urus's own Cargo.toml has `smarm = { path = "../smarm" }`, so
+# cargo resolves smarm transitively as long as it's a sibling of urus.
+urus  = { path = "../../urus" }
+smarm = { path = "../../smarm" }
+
+serde      = { version = "1", features = ["derive"] }
+serde_json = "1"
+
+# Constant-time compare for the bearer-token check. Tiny dep, no transitive
+# bloat, and the right thing to use.
+subtle = "2"
+
+# In-memory ring buffer for the logger plug. Bounded MPSC over a fixed
+# array — no allocation on the hot path.
+crossbeam-queue = "0.3"
+
+# Embedded SQLite. The `bundled` feature compiles SQLite from source so we
+# don't depend on the system library — important for reproducibility on
+# build hosts that may or may not have libsqlite3-dev.
+rusqlite = { version = "0.32", features = ["bundled"] }
+
+# Tiny argv parser so we don't pull in clap for a 3-flag CLI.
+# We hand-roll it instead. No dep here.
+
+[[bin]]
+name = "urus-server"
+path = "src/main.rs"

urus-server/src/handlers.rs

@@ -0,0 +1,172 @@
+//! Request handlers and the AppState that holds the store-handle factory.
+//!
+//! The trick: smarm requires `spawn` (and `gen_server::start`) to be called
+//! from inside an actor. The bootstrap thread that calls `serve_with` is NOT
+//! an actor — it's the user's main(). So we can't spawn the store actor at
+//! startup; we defer to the first request that asks for it. That request runs
+//! inside a connection actor, which is a valid place to spawn.
+//!
+//! AppState holds:
+//!   - a "store_init" factory that lazily spawns the store on first use
+//!     and caches the resulting StoreHandle
+//!   - the shared log ring (not yet used here; handlers don't log
+//!     directly, the logger plug does)
+//!
+//! Concurrency: the first connection actor to ask wins the init race;
+//! the rest see the already-initialised handle. We use OnceLock for this
+//! — std primitive, no extra dep.
+
+use std::sync::{Arc, OnceLock};
+
+use urus::{Conn, Next, Plug, Router};
+
+use crate::middleware::LogRing;
+use crate::store::{StoreHandle, StoreReq};
+
+// ---------------------------------------------------------------------------
+// AppState
+// ---------------------------------------------------------------------------
+
+#[derive(Clone)]
+pub struct AppState {
+    inner: Arc<AppStateInner>,
+}
+
+struct AppStateInner {
+    store_handle: OnceLock<StoreHandle>,
+    store_init:   Arc<dyn Fn() -> StoreHandle + Send + Sync + 'static>,
+    // Kept for parity with the spec even though handlers don't read it.
+    #[allow(dead_code)]
+    log_ring:     LogRing,
+}
+
+impl AppState {
+    pub fn new(
+        store_init: Arc<dyn Fn() -> StoreHandle + Send + Sync + 'static>,
+        log_ring:   LogRing,
+    ) -> Self {
+        Self {
+            inner: Arc::new(AppStateInner {
+                store_handle: OnceLock::new(),
+                store_init,
+                log_ring,
+            }),
+        }
+    }
+
+    /// Lazy store accessor. Safe to call from inside any connection
+    /// actor; safe to call concurrently — `OnceLock::get_or_init`
+    /// guarantees the init closure runs exactly once.
+    pub fn store(&self) -> &StoreHandle {
+        self.inner.store_handle.get_or_init(|| (self.inner.store_init)())
+    }
+}
+
+// ---------------------------------------------------------------------------
+// Tiny helpers
+// ---------------------------------------------------------------------------
+
+fn json(conn: Conn, status: u16, body: Vec<u8>) -> Conn {
+    conn.put_status(status)
+        .put_header("content-type", "application/json")
+        .put_body(body)
+}
+
+fn text(conn: Conn, status: u16, body: &'static str) -> Conn {
+    conn.put_status(status)
+        .put_header("content-type", "text/plain; charset=utf-8")
+        .put_body(body)
+}
+
+fn parse_id(s: &str) -> Option<u64> { s.parse().ok() }
+
+const STORE_UNAVAILABLE: &[u8] = b"{\"error\":\"store unavailable\"}";
+
+// ---------------------------------------------------------------------------
+// Handlers
+// ---------------------------------------------------------------------------
+//
+// All handlers close over a clone of AppState. Each handler closure is a
+// `Fn(Conn, Next) -> Conn`, which is exactly the Plug shape urus's blanket
+// impl picks up. A request is now a single `store().call(...)`: the gen_server
+// `call` builds the reply channel, sends, and parks for the reply, so the
+// old per-handler channel + send + recv boilerplate is gone.
+
+fn build_ping_handler() -> impl Plug {
+    // /ping is a literal endpoint: status 200, body "pong". No work.
+    move |conn: Conn, _next: Next| text(conn, 200, "pong")
+}
+
+fn build_list_handler(state: AppState) -> impl Plug {
+    move |conn: Conn, _next: Next| {
+        match state.store().call(StoreReq::List) {
+            Ok((s, b)) => json(conn, s, b),
+            Err(_)     => json(conn, 503, STORE_UNAVAILABLE.to_vec()),
+        }
+    }
+}
+
+fn build_get_one_handler(state: AppState) -> impl Plug {
+    move |conn: Conn, _next: Next| {
+        let id = match conn.params.get("id").and_then(parse_id) {
+            Some(id) => id,
+            None     => return json(conn, 400, b"{\"error\":\"bad id\"}".to_vec()),
+        };
+        match state.store().call(StoreReq::Get { id }) {
+            Ok((s, b)) => json(conn, s, b),
+            Err(_)     => json(conn, 503, STORE_UNAVAILABLE.to_vec()),
+        }
+    }
+}
+
+fn build_create_handler(state: AppState) -> impl Plug {
+    move |conn: Conn, _next: Next| {
+        // Clone the body bytes out; we still need `conn` to build the reply.
+        let body = conn.body.as_bytes().to_vec();
+        match state.store().call(StoreReq::Create { body }) {
+            Ok((s, b)) => json(conn, s, b),
+            Err(_)     => json(conn, 503, STORE_UNAVAILABLE.to_vec()),
+        }
+    }
+}
+
+fn build_update_handler(state: AppState) -> impl Plug {
+    move |conn: Conn, _next: Next| {
+        let id = match conn.params.get("id").and_then(parse_id) {
+            Some(id) => id,
+            None     => return json(conn, 400, b"{\"error\":\"bad id\"}".to_vec()),
+        };
+        let body = conn.body.as_bytes().to_vec();
+        match state.store().call(StoreReq::Update { id, body }) {
+            Ok((s, b)) => json(conn, s, b),
+            Err(_)     => json(conn, 503, STORE_UNAVAILABLE.to_vec()),
+        }
+    }
+}
+
+fn build_delete_handler(state: AppState) -> impl Plug {
+    move |conn: Conn, _next: Next| {
+        let id = match conn.params.get("id").and_then(parse_id) {
+            Some(id) => id,
+            None     => return json(conn, 400, b"{\"error\":\"bad id\"}".to_vec()),
+        };
+        match state.store().call(StoreReq::Delete { id }) {
+            Ok((s, b)) => json(conn, s, b),
+            Err(_)     => json(conn, 503, STORE_UNAVAILABLE.to_vec()),
+        }
+    }
+}
+
+// ---------------------------------------------------------------------------
+// Router assembly
+// ---------------------------------------------------------------------------
+
+pub fn build_router(state: AppState) -> Router {
+    Router::new()
+        .get(   "/ping",            build_ping_handler())
+        .get(   "/api/v1/users",    build_list_handler(state.clone()))
+        .post(  "/api/v1/users",    build_create_handler(state.clone()))
+        .get(   "/api/v1/users/:id", build_get_one_handler(state.clone()))
+        .put(   "/api/v1/users/:id", build_update_handler(state.clone()))
+        .delete("/api/v1/users/:id", build_delete_handler(state))
+}

urus-server/src/main.rs

@@ -0,0 +1,194 @@
+//! urus-server — the urus side of the urus / axum / cowboy benchmark.
+//!
+//! Exposes the routes from `urus-bench-spec.md` §3 with the middleware
+//! stack from §3.1–§3.4. Backing store is switchable at startup:
+//!
+//!   --store=memory   in-memory actor (S1, S2, S3)
+//!   --store=sqlite   single-writer + reader-pool over rusqlite (S4)
+//!
+//! Other flags:
+//!   --addr=HOST:PORT          default 127.0.0.1:8080
+//!   --token=TOKEN             default "test-token-aaaaaaaaaaaaaaaaaaaa"
+//!   --db-path=PATH            SQLite file path (sqlite store only)
+//!   --no-auth                 skip the auth plug (used for S1 /ping check)
+//!
+//! The `/ping` route is mounted *outside* the auth plug so the S1 scenario
+//! does not pay an auth cost it doesn't need. S2/S3/S4 routes are inside it.
+
+mod handlers;
+mod middleware;
+mod store;
+
+use std::process::ExitCode;
+use std::sync::Arc;
+
+use urus::{serve_with, Config, Conn, Next, Pipeline};
+
+use handlers::AppState;
+use middleware::{auth_plug, logger_plug, request_id_plug, LogRing};
+use store::{spawn_memory_store, spawn_sqlite_store, StoreHandle};
+
+// ---------------------------------------------------------------------------
+// CLI
+// ---------------------------------------------------------------------------
+
+#[derive(Clone, Debug)]
+struct Cli {
+    addr:    String,
+    store:   StoreKind,
+    token:   String,
+    db_path: String,
+    no_auth: bool,
+}
+
+#[derive(Clone, Copy, Debug)]
+enum StoreKind { Memory, Sqlite }
+
+impl Cli {
+    fn parse() -> Result<Self, String> {
+        // Hand-rolled because clap would dominate compile time for three
+        // flags. Each arg is `--name=value` or `--name` (no positionals).
+        let mut cli = Cli {
+            addr:    "127.0.0.1:8080".into(),
+            store:   StoreKind::Memory,
+            token:   "test-token-aaaaaaaaaaaaaaaaaaaa".into(),
+            db_path: "/tmp/urus-bench.sqlite".into(),
+            no_auth: false,
+        };
+        for arg in std::env::args().skip(1) {
+            let (k, v) = match arg.split_once('=') {
+                Some((k, v)) => (k, Some(v.to_string())),
+                None         => (arg.as_str(), None),
+            };
+            match (k, v) {
+                ("--addr",    Some(v)) => cli.addr = v,
+                ("--token",   Some(v)) => cli.token = v,
+                ("--db-path", Some(v)) => cli.db_path = v,
+                ("--store",   Some(v)) => cli.store = match v.as_str() {
+                    "memory" => StoreKind::Memory,
+                    "sqlite" => StoreKind::Sqlite,
+                    other    => return Err(format!("unknown store: {other}")),
+                },
+                ("--no-auth", None)    => cli.no_auth = true,
+                ("--help" | "-h", _)   => {
+                    print_usage();
+                    std::process::exit(0);
+                }
+                (k, _) => return Err(format!("unknown flag: {k}")),
+            }
+        }
+        Ok(cli)
+    }
+}
+
+fn print_usage() {
+    eprintln!(
+        "urus-server [--addr=HOST:PORT] [--store=memory|sqlite] \
+         [--token=TOKEN] [--db-path=PATH] [--no-auth]"
+    );
+}
+
+// ---------------------------------------------------------------------------
+// main
+// ---------------------------------------------------------------------------
+
+fn main() -> ExitCode {
+    let cli = match Cli::parse() {
+        Ok(c)  => c,
+        Err(e) => { eprintln!("urus-server: {e}"); print_usage(); return ExitCode::from(2); }
+    };
+
+    let addr = match cli.addr.parse() {
+        Ok(a)  => a,
+        Err(e) => { eprintln!("urus-server: bad --addr: {e}"); return ExitCode::from(2); }
+    };
+
+    // The log ring is a bounded MPSC-like buffer with a fixed capacity. It
+    // is shared by every connection actor (via Arc) and drained on Ctrl-C
+    // — but we don't wire shutdown in v1, so it's just an in-memory sink.
+    // Bounded means the bench can run for an hour without RSS growth.
+    let log_ring = LogRing::with_capacity(64 * 1024);
+
+    // Token is wrapped in Arc<[u8]> so each plug clone is a refcount bump.
+    // The constant-time compare reads it as bytes.
+    let token: Arc<[u8]> = cli.token.as_bytes().to_vec().into();
+
+    // The pipeline is shape:
+    //   logger -> request_id -> [auth ->] router
+    //
+    // /ping is mounted as a literal at the top of the router so it shares
+    // the middleware chain with everything else; the bench spec says S1 is
+    // a "naked" hello world, but in this implementation /ping still goes
+    // through the logger and request_id plugs. That keeps the impl simple
+    // and lets us measure the middleware cost as the *S2 minus S1* delta,
+    // which is what the spec actually asks for (§2).
+    //
+    // --no-auth turns off auth for cases where the load generator can't
+    // easily set headers (it shouldn't be needed for wrk2 though).
+    let auth_token = token.clone();
+    let auth = move |conn: Conn, next: Next| auth_plug(conn, next, &auth_token);
+
+    // The store handle is what handlers use to talk to the store actor.
+    // It's a wrapper around a smarm Sender; cloning is cheap (refcount).
+    //
+    // We can't actually *spawn* the store actor here (smarm requires that
+    // spawn be called from inside an actor, not from the bootstrap
+    // thread). The OnceLock in handlers::AppState defers that until the
+    // first request comes in. We just pass the construction parameters
+    // through here.
+    //
+    // For SQLite we use the configured DB path; for memory we don't
+    // need anything.
+    let store_init: Arc<dyn Fn() -> StoreHandle + Send + Sync + 'static> =
+        match cli.store {
+            StoreKind::Memory => Arc::new(|| spawn_memory_store()),
+            StoreKind::Sqlite => {
+                let path = cli.db_path.clone();
+                Arc::new(move || spawn_sqlite_store(&path))
+            }
+        };
+
+    let state = AppState::new(store_init, log_ring.clone());
+
+    // Build the router. Handlers close over `state` (cheap Arc clone).
+    // Note that handlers themselves use the AppState to resolve the
+    // store on first call.
+    let router = handlers::build_router(state.clone());
+
+    // Assemble the pipeline.
+    //
+    // The closures below take `Conn, Next` with explicit type annotations.
+    // This is necessary because `Next<'a>` is generic over a lifetime;
+    // without the annotation rustc binds the closure to *one specific*
+    // lifetime and then it doesn't satisfy `Plug`'s `Fn(Conn, Next) -> Conn`
+    // higher-ranked bound. With `Next` written out, the closure parses as
+    // `for<'a> Fn(Conn, Next<'a>) -> Conn`, which is what Plug wants.
+    let log_plug = {
+        let ring = log_ring.clone();
+        move |conn: Conn, next: Next| logger_plug(conn, next, &ring)
+    };
+
+    let mut pipeline = Pipeline::new()
+        .plug(log_plug)
+        .plug(request_id_plug);
+
+    if !cli.no_auth {
+        pipeline = pipeline.plug(auth);
+    }
+
+    let pipeline = pipeline.plug(router);
+
+    // Serve. We use the default Config and let urus's heuristic pick
+    // listener pool size = num CPUs.
+    let cfg = Config::new(addr);
+    eprintln!(
+        "urus-server: store={:?} addr={} auth={}",
+        cli.store, cli.addr, !cli.no_auth
+    );
+    if let Err(e) = serve_with(cfg, pipeline) {
+        eprintln!("urus-server: serve failed: {e}");
+        return ExitCode::from(1);
+    }
+
+    ExitCode::SUCCESS
+}

urus-server/src/middleware.rs

@@ -0,0 +1,234 @@
+//! Middleware plugs for the bench.
+//!
+//! Per the spec §3:
+//!   - Logger writes to a bounded ring (no stdout — that would dominate).
+//!   - Request ID is generated from a thread-local fast RNG (SplitMix64).
+//!   - Auth is constant-time bearer-token compare.
+//!
+//! Each plug is a `Fn(Conn, Next) -> Conn` closure; urus's blanket impl
+//! turns them into Plug values when handed to Pipeline::plug.
+
+use std::cell::Cell;
+use std::sync::Arc;
+use std::time::Instant;
+
+use crossbeam_queue::ArrayQueue;
+use subtle::ConstantTimeEq;
+use urus::{Conn, Next};
+
+// ---------------------------------------------------------------------------
+// Log ring
+// ---------------------------------------------------------------------------
+//
+// Bounded MPSC over a fixed-capacity array. We push from many connection
+// actors and never read during the bench (drain on shutdown only). If the
+// ring fills, new entries are dropped — the bench is the priority, not
+// the log. This matches what we said in spec §1.5: warm-up + 60s measured
+// at high RPS would overflow any unbounded buffer.
+
+#[derive(Debug, Clone)]
+pub struct LogEntry {
+    pub method:     String,
+    pub path:       String,
+    pub status:     u16,
+    pub elapsed_us: u64,
+}
+
+#[derive(Clone)]
+pub struct LogRing {
+    inner: Arc<ArrayQueue<LogEntry>>,
+}
+
+impl LogRing {
+    pub fn with_capacity(n: usize) -> Self {
+        Self { inner: Arc::new(ArrayQueue::new(n)) }
+    }
+
+    /// Push an entry. Drops the entry on overflow (returns Err in
+    /// crossbeam's API — we discard).
+    pub fn push(&self, e: LogEntry) {
+        let _ = self.inner.push(e);
+    }
+
+    /// For inspection after a run.
+    #[allow(dead_code)]
+    pub fn drain(&self) -> Vec<LogEntry> {
+        let mut out = Vec::with_capacity(self.inner.len());
+        while let Some(e) = self.inner.pop() { out.push(e); }
+        out
+    }
+}
+
+// ---------------------------------------------------------------------------
+// Logger plug
+// ---------------------------------------------------------------------------
+//
+// Wraps `next`. Captures method/path *before* the inner plugs run (the
+// router may move them), then captures status + elapsed after.
+
+pub fn logger_plug(conn: Conn, next: Next, ring: &LogRing) -> Conn {
+    let start  = Instant::now();
+    let method = conn.method.as_str().to_string();
+    let path   = conn.path.clone();
+    let conn   = next.run(conn);
+    let elapsed_us = start.elapsed().as_micros() as u64;
+    ring.push(LogEntry {
+        method,
+        path,
+        status: conn.status.unwrap_or(0),
+        elapsed_us,
+    });
+    conn
+}
+
+// ---------------------------------------------------------------------------
+// Request ID — SplitMix64 in a thread-local, base32-encoded.
+// ---------------------------------------------------------------------------
+//
+// We avoid global RNG / OS getrandom on the hot path. Each scheduler OS
+// thread gets its own seed (Cell + thread_local) and advances it with the
+// SplitMix64 step. 12 bytes of output is encoded with the RFC 4648 base32
+// alphabet (no padding, no lowercase — the header is opaque to the load
+// generator).
+//
+// Crockford-style alphabet would be friendlier to humans but base32-hex
+// is fine here.
+
+thread_local! {
+    static RNG_STATE: Cell<u64> = const { Cell::new(0) };
+}
+
+fn splitmix64(s: u64) -> (u64, u64) {
+    // Standard SplitMix64. One 64-bit step gives a uniformly distributed
+    // output and the next state.
+    let new_state = s.wrapping_add(0x9E3779B97F4A7C15);
+    let mut z = new_state;
+    z = (z ^ (z >> 30)).wrapping_mul(0xBF58476D1CE4E5B9);
+    z = (z ^ (z >> 27)).wrapping_mul(0x94D049BB133111EB);
+    (new_state, z ^ (z >> 31))
+}
+
+fn next_random_bytes(out: &mut [u8; 12]) {
+    RNG_STATE.with(|cell| {
+        let mut s = cell.get();
+        if s == 0 {
+            // Lazy first-time seed. Mixing pointer + thread id + clock
+            // is sufficient for a bench-local RNG; this isn't crypto.
+            let p = cell as *const _ as usize as u64;
+            let t = std::time::SystemTime::now()
+                .duration_since(std::time::UNIX_EPOCH)
+                .map(|d| d.as_nanos() as u64)
+                .unwrap_or(0);
+            s = p ^ t ^ 0xA5A5_A5A5_A5A5_A5A5;
+            if s == 0 { s = 1; }
+        }
+        let (s1, r1) = splitmix64(s);
+        let (s2, r2) = splitmix64(s1);
+        cell.set(s2);
+        out[0..8].copy_from_slice(&r1.to_le_bytes());
+        out[8..12].copy_from_slice(&r2.to_le_bytes()[..4]);
+    });
+}
+
+// Base32 (RFC 4648) without padding. 12 bytes = 96 bits -> ceil(96/5) = 20
+// output chars exactly. No padding needed.
+fn b32_encode(input: &[u8; 12]) -> String {
+    static ALPHABET: &[u8; 32] = b"ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";
+    let mut out = String::with_capacity(20);
+    let mut buf: u64 = 0;
+    let mut bits: u32 = 0;
+    for &b in input {
+        buf = (buf << 8) | (b as u64);
+        bits += 8;
+        while bits >= 5 {
+            bits -= 5;
+            let idx = ((buf >> bits) & 0x1F) as usize;
+            out.push(ALPHABET[idx] as char);
+        }
+    }
+    if bits > 0 {
+        let idx = ((buf << (5 - bits)) & 0x1F) as usize;
+        out.push(ALPHABET[idx] as char);
+    }
+    out
+}
+
+pub fn request_id_plug(conn: Conn, next: Next) -> Conn {
+    let mut raw = [0u8; 12];
+    next_random_bytes(&mut raw);
+    let id = b32_encode(&raw);
+    // Set on the response. We could also stash it in `conn.assigns` for
+    // handlers to read, but the bench doesn't need that.
+    let conn = next.run(conn);
+    conn.put_header("x-request-id", id)
+}
+
+// ---------------------------------------------------------------------------
+// Auth plug
+// ---------------------------------------------------------------------------
+//
+// Read `Authorization: Bearer <token>`; constant-time compare against the
+// configured token. Mismatch -> 401 + halt.
+//
+// The token is borrowed (&[u8]) so the closure that wraps this can hold
+// it via Arc<[u8]> and pass a slice in. No alloc per request.
+
+pub fn auth_plug(conn: Conn, next: Next, expected: &[u8]) -> Conn {
+    // /ping is the S1 "naked" endpoint per the bench spec — it must not
+    // pay the auth cost. We exempt it by path. This is a deliberate
+    // exception, not a generic feature; the rest of the pipeline (logger,
+    // request_id) still applies to /ping, which is what the spec asks for
+    // (S1 measures the framework floor, not "no middleware whatsoever").
+    if conn.path == "/ping" {
+        return next.run(conn);
+    }
+
+    let header = conn.headers.get("authorization");
+    let presented: Option<&[u8]> = header.and_then(|h| {
+        // strip the "Bearer " prefix (case-insensitive per RFC 6750, but
+        // wrk2 sends the canonical form so an exact prefix check is fine)
+        h.strip_prefix("Bearer ").map(|s| s.as_bytes())
+    });
+
+    let ok = match presented {
+        Some(p) if p.len() == expected.len() =>
+            bool::from(p.ct_eq(expected)),
+        _ => false,
+    };
+
+    if ok {
+        next.run(conn)
+    } else {
+        conn.put_status(401)
+            .put_header("content-type", "application/json")
+            .put_body(&b"{\"error\":\"unauthorized\"}"[..])
+            .halt()
+    }
+}
+
+// ---------------------------------------------------------------------------
+// Tests
+// ---------------------------------------------------------------------------
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn b32_round_trip_lengths() {
+        let mut raw = [0u8; 12];
+        for i in 0..12u8 { raw[i as usize] = i; }
+        let s = b32_encode(&raw);
+        assert_eq!(s.len(), 20);
+        assert!(s.chars().all(|c| c.is_ascii_uppercase() || c.is_ascii_digit()));
+    }
+
+    #[test]
+    fn rng_advances() {
+        let mut a = [0u8; 12];
+        let mut b = [0u8; 12];
+        next_random_bytes(&mut a);
+        next_random_bytes(&mut b);
+        assert_ne!(a, b, "consecutive calls must produce different bytes");
+    }
+}

urus-server/src/store.rs

@@ -0,0 +1,404 @@
+//! Store actors for the urus-server bench.
+//!
+//! Two implementations behind one [`StoreHandle`]:
+//!   - **Memory store** (S1/S2/S3): one `gen_server` actor owning a
+//!     `Vec<User>`. Reads and writes share the single gen_server inbox, so a
+//!     request is exactly one park/unpark round-trip — the path the RFC 004
+//!     spinning patch perturbs. This is the scenario we actually want clean.
+//!   - **SQLite store** (S4): one writer actor + a pool of reader actors over
+//!     raw `channel` actors. NOT ported to gen_server (single-inbox would
+//!     serialise the reader pool and kill S4 read parallelism); left exactly
+//!     as it was. It is not part of the spinning A/B and is kept only so the
+//!     binary still builds with `--store=sqlite`.
+//!
+//! `StoreHandle` is what handlers hold. It's cheap-cloneable and exposes a
+//! single `call(StoreReq) -> Reply` that both backends answer.
+
+use smarm::{channel, GenServer, Receiver, Sender, ServerBuilder, ServerRef};
+use std::path::Path;
+use std::sync::Arc;
+
+use rusqlite::{params, Connection, OpenFlags};
+
+// ---------------------------------------------------------------------------
+// Wire types
+// ---------------------------------------------------------------------------
+//
+// We return (status, body_bytes) so handlers can hand them straight to
+// `Conn::put_body` without re-serialising. The store does the JSON work.
+
+pub type Reply = (u16, Vec<u8>);
+
+/// The unified store request. One variant per route. Unlike the old
+/// `ReadReq`/`WriteReq`, these carry *no* reply channel — gen_server's `call`
+/// creates and threads the reply for us, so the request is just the payload.
+pub enum StoreReq {
+    List,
+    Get    { id: u64 },
+    Create { body: Vec<u8> },
+    Update { id: u64, body: Vec<u8> },
+    Delete { id: u64 },
+}
+
+// The SQLite backend still routes reads vs writes to two different actor
+// sets, so it keeps the split request enums *with* their reply senders.
+// These are now used ONLY by the SQLite store internals.
+
+pub enum ReadReq {
+    List { reply: Sender<Reply> },
+    Get  { id: u64, reply: Sender<Reply> },
+}
+
+pub enum WriteReq {
+    Create { body: Vec<u8>, reply: Sender<Reply> },
+    Update { id: u64, body: Vec<u8>, reply: Sender<Reply> },
+    Delete { id: u64, reply: Sender<Reply> },
+}
+
+// ---------------------------------------------------------------------------
+// User model
+// ---------------------------------------------------------------------------
+
+#[derive(Clone, Debug, serde::Serialize, serde::Deserialize)]
+struct User {
+    id:    u64,
+    name:  String,
+    email: String,
+}
+
+#[derive(serde::Deserialize)]
+struct NewUser {
+    name:  String,
+    email: String,
+}
+
+// ---------------------------------------------------------------------------
+// Public handle
+// ---------------------------------------------------------------------------
+//
+// Both backends produce a StoreHandle. Memory wraps a gen_server ServerRef;
+// SQLite wraps the read/write Sender pair. `call` hides the difference so
+// handlers issue one uniform request regardless of backend.
+
+#[derive(Clone)]
+pub enum StoreHandle {
+    Memory(ServerRef<MemStore>),
+    Sqlite { reads: Sender<ReadReq>, writes: Sender<WriteReq> },
+}
+
+impl StoreHandle {
+    /// Issue a request and wait for the reply. `Err(())` means the store is
+    /// unreachable (server gone / channel closed); handlers turn that into a
+    /// 503. The memory path is a single gen_server `call`; the SQLite path
+    /// builds a one-shot reply channel and routes to the writer or a reader.
+    pub fn call(&self, req: StoreReq) -> Result<Reply, ()> {
+        match self {
+            StoreHandle::Memory(r) => r.call(req).map_err(|_| ()),
+            StoreHandle::Sqlite { reads, writes } => {
+                let (tx, rx) = channel::<Reply>();
+                // Map each backend's distinct SendError<T> to () so the arms
+                // unify, then `?` on the common Result<(), ()>.
+                let sent: Result<(), ()> = match req {
+                    StoreReq::List                => reads.send(ReadReq::List { reply: tx }).map_err(|_| ()),
+                    StoreReq::Get { id }          => reads.send(ReadReq::Get { id, reply: tx }).map_err(|_| ()),
+                    StoreReq::Create { body }     => writes.send(WriteReq::Create { body, reply: tx }).map_err(|_| ()),
+                    StoreReq::Update { id, body } => writes.send(WriteReq::Update { id, body, reply: tx }).map_err(|_| ()),
+                    StoreReq::Delete { id }       => writes.send(WriteReq::Delete { id, reply: tx }).map_err(|_| ()),
+                };
+                sent?;
+                rx.recv().map_err(|_| ())
+            }
+        }
+    }
+}
+
+// ---------------------------------------------------------------------------
+// Memory store — one gen_server, one Vec.
+// ---------------------------------------------------------------------------
+//
+// Everything is a `Call`: the HTTP handler needs the reply to build the
+// response, so there is no fire-and-forget path here (`type Cast = ()`,
+// unused). One inbox, one hop per request — no forwarder actors, which is the
+// whole point of the port: the old raw-actor store needed two forwarders to
+// fake a read/write select over smarm's single mailbox, costing two extra
+// park/unpark hops per request and contaminating exactly the cost the spin
+// patch moves.
+
+pub struct MemStore {
+    users:   Vec<User>,
+    next_id: u64,
+}
+
+impl MemStore {
+    fn new() -> Self {
+        MemStore { users: Vec::with_capacity(1024), next_id: 1 }
+    }
+}
+
+impl GenServer for MemStore {
+    type Call  = StoreReq;
+    type Reply = Reply;
+    type Cast  = ();
+    type Info  = ();
+
+    fn handle_call(&mut self, req: StoreReq) -> Reply {
+        match req {
+            StoreReq::List => {
+                // Cap at 100 per the spec.
+                let snapshot: Vec<&User> = self.users.iter().take(100).collect();
+                let body = serde_json::to_vec(&snapshot).unwrap_or_else(|_| b"[]".to_vec());
+                (200, body)
+            }
+            StoreReq::Get { id } => {
+                match self.users.iter().find(|u| u.id == id) {
+                    Some(u) => (200, serde_json::to_vec(u).unwrap()),
+                    None    => (404, b"{\"error\":\"not found\"}".to_vec()),
+                }
+            }
+            StoreReq::Create { body } => {
+                match serde_json::from_slice::<NewUser>(&body) {
+                    Ok(nu) => {
+                        let u = User { id: self.next_id, name: nu.name, email: nu.email };
+                        self.next_id += 1;
+                        self.users.push(u.clone());
+                        // Steady-state RPS bench: cap so we don't grow unbounded.
+                        if self.users.len() > 100_000 {
+                            self.users.drain(..50_000);
+                        }
+                        (201, serde_json::to_vec(&u).unwrap())
+                    }
+                    Err(_) => (400, b"{\"error\":\"invalid body\"}".to_vec()),
+                }
+            }
+            StoreReq::Update { id, body } => {
+                match serde_json::from_slice::<NewUser>(&body) {
+                    Ok(nu) => match self.users.iter_mut().find(|u| u.id == id) {
+                        Some(u) => {
+                            u.name  = nu.name;
+                            u.email = nu.email;
+                            let snap = u.clone();
+                            (200, serde_json::to_vec(&snap).unwrap())
+                        }
+                        None => (404, b"{\"error\":\"not found\"}".to_vec()),
+                    },
+                    Err(_) => (400, b"{\"error\":\"invalid body\"}".to_vec()),
+                }
+            }
+            StoreReq::Delete { id } => {
+                let before = self.users.len();
+                self.users.retain(|u| u.id != id);
+                if self.users.len() < before {
+                    (204, Vec::new())
+                } else {
+                    (404, b"{\"error\":\"not found\"}".to_vec())
+                }
+            }
+        }
+    }
+
+    fn handle_cast(&mut self, _req: ()) {}
+}
+
+pub fn spawn_memory_store() -> StoreHandle {
+    // gen_server::start (via ServerBuilder) must run inside an actor — the
+    // OnceLock lazy-init in AppState::store() guarantees that, same as before.
+    StoreHandle::Memory(ServerBuilder::new(MemStore::new()).start())
+}
+
+// ---------------------------------------------------------------------------
+// SQLite store — one writer + N readers.  (UNCHANGED — not ported.)
+// ---------------------------------------------------------------------------
+//
+// Per the spec §5.1:
+//   - One writer actor owns a single rusqlite::Connection (read-write).
+//   - N=4 reader actors each own a private channel; a dispatcher round-robins
+//     reads across them. (gen_server is single-inbox, so porting this would
+//     serialise reads through one actor and kill S4 read parallelism — hence
+//     it stays on raw actors. It is not part of the spinning A/B.)
+//
+// All connections open the same database file. WAL is set on the writer's
+// connection (the journal mode is a database-wide setting). busy_timeout is
+// set on every conn so a momentary writer hold doesn't EBUSY the readers.
+
+const SQLITE_READER_COUNT: usize = 4;
+
+pub fn spawn_sqlite_store(db_path: &str) -> StoreHandle {
+    let path: Arc<str> = Arc::from(db_path);
+
+    // The writer actor.
+    let (writes_tx, writes_rx) = channel::<WriteReq>();
+    {
+        let path = path.clone();
+        smarm::spawn(move || sqlite_writer_loop(&path, writes_rx));
+    }
+
+    // The readers. smarm's channel is MPSC, so we can't share a single
+    // Receiver across N reader actors. Instead: one dispatcher owns the
+    // public `reads_rx`, and round-robins each request into one of N
+    // per-reader private channels.
+    let (reads_tx, reads_rx) = channel::<ReadReq>();
+    let mut per_reader_txs: Vec<Sender<ReadReq>> = Vec::with_capacity(SQLITE_READER_COUNT);
+    for _ in 0..SQLITE_READER_COUNT {
+        let (tx, rx) = channel::<ReadReq>();
+        per_reader_txs.push(tx);
+        let path = path.clone();
+        smarm::spawn(move || sqlite_reader_loop(&path, rx));
+    }
+    smarm::spawn(move || dispatch_reads(reads_rx, per_reader_txs));
+
+    StoreHandle::Sqlite { reads: reads_tx, writes: writes_tx }
+}
+
+fn open_writer(path: &str) -> Connection {
+    let conn = Connection::open(path).expect("sqlite: open writer");
+    // WAL is the whole reason this design works: writers don't block
+    // readers, readers don't block writers, only writers block other
+    // writers (and there's only one).
+    conn.pragma_update(None, "journal_mode", "WAL").expect("sqlite: WAL");
+    conn.pragma_update(None, "synchronous",  "NORMAL").expect("sqlite: synchronous");
+    conn.pragma_update(None, "busy_timeout", 5000_i64).expect("sqlite: busy_timeout");
+    conn.execute_batch(
+        "CREATE TABLE IF NOT EXISTS users (
+             id    INTEGER PRIMARY KEY AUTOINCREMENT,
+             name  TEXT NOT NULL,
+             email TEXT NOT NULL
+         );"
+    ).expect("sqlite: schema");
+    conn
+}
+
+fn open_reader(path: &str) -> Connection {
+    let conn = Connection::open_with_flags(
+        Path::new(path),
+        OpenFlags::SQLITE_OPEN_READ_ONLY | OpenFlags::SQLITE_OPEN_NO_MUTEX,
+    ).expect("sqlite: open reader");
+    conn.pragma_update(None, "busy_timeout", 5000_i64).expect("sqlite: busy_timeout");
+    // Readers inherit the DB-wide WAL setting from the writer.
+    conn
+}
+
+fn sqlite_writer_loop(path: &str, rx: Receiver<WriteReq>) {
+    let conn = open_writer(path);
+    while let Ok(req) = rx.recv() {
+        match req {
+            WriteReq::Create { body, reply } => {
+                match serde_json::from_slice::<NewUser>(&body) {
+                    Ok(nu) => {
+                        let res = conn.execute(
+                            "INSERT INTO users (name, email) VALUES (?1, ?2)",
+                            params![nu.name, nu.email],
+                        );
+                        match res {
+                            Ok(_) => {
+                                let id = conn.last_insert_rowid() as u64;
+                                let u  = User { id, name: nu.name, email: nu.email };
+                                let _ = reply.send((201, serde_json::to_vec(&u).unwrap()));
+                            }
+                            Err(e) => {
+                                eprintln!("sqlite: insert failed: {e}");
+                                let _ = reply.send((500, b"{\"error\":\"db\"}".to_vec()));
+                            }
+                        }
+                    }
+                    Err(_) => {
+                        let _ = reply.send((400, b"{\"error\":\"invalid body\"}".to_vec()));
+                    }
+                }
+            }
+            WriteReq::Update { id, body, reply } => {
+                match serde_json::from_slice::<NewUser>(&body) {
+                    Ok(nu) => {
+                        let res = conn.execute(
+                            "UPDATE users SET name=?1, email=?2 WHERE id=?3",
+                            params![nu.name, nu.email, id as i64],
+                        );
+                        match res {
+                            Ok(0) => { let _ = reply.send((404, b"{\"error\":\"not found\"}".to_vec())); }
+                            Ok(_) => {
+                                let u = User { id, name: nu.name, email: nu.email };
+                                let _ = reply.send((200, serde_json::to_vec(&u).unwrap()));
+                            }
+                            Err(_) => { let _ = reply.send((500, b"{\"error\":\"db\"}".to_vec())); }
+                        }
+                    }
+                    Err(_) => {
+                        let _ = reply.send((400, b"{\"error\":\"invalid body\"}".to_vec()));
+                    }
+                }
+            }
+            WriteReq::Delete { id, reply } => {
+                let res = conn.execute(
+                    "DELETE FROM users WHERE id=?1",
+                    params![id as i64],
+                );
+                match res {
+                    Ok(0)  => { let _ = reply.send((404, b"{\"error\":\"not found\"}".to_vec())); }
+                    Ok(_)  => { let _ = reply.send((204, Vec::new())); }
+                    Err(_) => { let _ = reply.send((500, b"{\"error\":\"db\"}".to_vec())); }
+                }
+            }
+        }
+    }
+}
+
+fn dispatch_reads(rx: Receiver<ReadReq>, workers: Vec<Sender<ReadReq>>) {
+    // Strict round-robin. SQLite reads are uniform in cost (single-row PK
+    // lookup or LIMIT 100), so a brief reader stall just shifts a request to
+    // the next reader on the next pass.
+    let n = workers.len();
+    let mut idx = 0usize;
+    while let Ok(req) = rx.recv() {
+        let target = &workers[idx % n];
+        idx = idx.wrapping_add(1);
+        if target.send(req).is_err() {
+            // Reader died; skip it. Unsupervised in this binary — fine for the
+            // bench.
+        }
+    }
+}
+
+fn sqlite_reader_loop(path: &str, rx: Receiver<ReadReq>) {
+    let conn = open_reader(path);
+    let mut stmt_get  = conn.prepare("SELECT id, name, email FROM users WHERE id=?1")
+        .expect("sqlite: prepare get");
+    let mut stmt_list = conn.prepare("SELECT id, name, email FROM users LIMIT 100")
+        .expect("sqlite: prepare list");
+
+    while let Ok(req) = rx.recv() {
+        match req {
+            ReadReq::Get { id, reply } => {
+                let row = stmt_get.query_row(params![id as i64], |r| {
+                    Ok(User {
+                        id:    r.get::<_, i64>(0)? as u64,
+                        name:  r.get(1)?,
+                        email: r.get(2)?,
+                    })
+                });
+                match row {
+                    Ok(u) => { let _ = reply.send((200, serde_json::to_vec(&u).unwrap())); }
+                    Err(rusqlite::Error::QueryReturnedNoRows) =>
+                        { let _ = reply.send((404, b"{\"error\":\"not found\"}".to_vec())); }
+                    Err(_) =>
+                        { let _ = reply.send((500, b"{\"error\":\"db\"}".to_vec())); }
+                }
+            }
+            ReadReq::List { reply } => {
+                let rows = stmt_list.query_map([], |r| {
+                    Ok(User {
+                        id:    r.get::<_, i64>(0)? as u64,
+                        name:  r.get(1)?,
+                        email: r.get(2)?,
+                    })
+                });
+                match rows {
+                    Ok(iter) => {
+                        let users: Vec<User> = iter.filter_map(|r| r.ok()).collect();
+                        let body = serde_json::to_vec(&users).unwrap_or_else(|_| b"[]".to_vec());
+                        let _ = reply.send((200, body));
+                    }
+                    Err(_) => { let _ = reply.send((500, b"{\"error\":\"db\"}".to_vec())); }
+                }
+            }
+        }
+    }
+}