Claude
72064c7a79
E1 (herd-vs-stranding discrimination) sweeps smarm scheduler count at fixed low concurrency. Strict parse — a malformed value panics instead of silently reverting to default, and the effective value is logged to stderr so every bench cell's server.log records it (same per-cell verification discipline as mode-verify).
49 lines
2.1 KiB
Rust
49 lines
2.1 KiB
Rust
//! Plain benchmark server: the `load_profile` request path with zero causal
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//! machinery — the baseline half of the ka/close A/B matrix (the
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//! throughput-inversion chase).
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//!
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//! Identical route, handler, and `Config` construction to `load_profile`;
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//! differs only in having no `smarm-causal` feature, no sweep, and no
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//! shutdown path — it serves until killed. Throughput is measured
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//! externally (wrk).
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//!
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//! Env:
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//! URUS_PORT listen port (default 8080; binds 0.0.0.0)
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//! URUS_SCHED_THREADS smarm scheduler OS threads (default: smarm's own
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//! default). Malformed values panic rather than
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//! silently falling back — a benchmark knob that
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//! quietly reverts to default poisons the cell.
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//!
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//! cargo run --release --example plain_serve
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use std::net::SocketAddr;
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use urus::{serve_with, Config, Conn, Next, Pipeline, Router};
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/// Mirrors `load_profile`'s handler byte for byte: param parse + JSON render.
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fn json_id(conn: Conn, _next: Next) -> Conn {
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let id: u64 = conn.params.get("id").and_then(|s| s.parse().ok()).unwrap_or(0);
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conn.put_status(200)
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.put_header("content-type", "application/json")
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.put_body(format!("{{\"id\":{id}}}"))
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}
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fn main() {
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let port: u16 = std::env::var("URUS_PORT")
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.ok()
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.and_then(|v| v.parse().ok())
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.unwrap_or(8080);
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let addr: SocketAddr = format!("0.0.0.0:{port}").parse().expect("addr");
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let sched_threads: Option<usize> = std::env::var("URUS_SCHED_THREADS").ok().map(|v| {
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v.parse()
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.unwrap_or_else(|_| panic!("URUS_SCHED_THREADS not a usize: {v:?}"))
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});
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// Audit line: lands in each bench cell's server.log so the effective
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// scheduler count is recorded per cell, same discipline as mode-verify.
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eprintln!("plain_serve: scheduler_threads={sched_threads:?}");
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let mut cfg = Config::new(addr);
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cfg.scheduler_threads = sched_threads;
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let pipe = Pipeline::new().plug(Router::new().get("/json/:id", json_id));
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serve_with(cfg, pipe).expect("serve");
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}
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