Bench
6d1c59fb99
benches: baseline results
...
Two compile fixes:
- tokio_favored.rs bench_mpsc_smarm: consumer spawn closure returned u64 via
bare 'count' tail expression; smarm::Runtime::run() requires FnOnce()->().
Fixed to 'let _ = count;'. Same fix on the consumer.join() call site.
- smarm_favored.rs bench_unc_smarm: same pattern, same fix.
Baseline run: Intel Xeon @ 2.80GHz, 1 core, kernel 6.18.5, rustc 1.95.0,
smarm 0.3.0, no RUSTFLAGS. Single-CPU sandbox — N-thread rows identical to
1-thread; scaling sweep limited to 1 thread.
Notable findings:
- deep_recursion: tokio wins (22 vs 62 us); mmap stack alloc cost dominates
for single-use actors at depth 500.
- yield_in_hot_loop: tokio wins (138 vs 182 ms); smarm mutex overhead on
yield_now exceeds expected naked-switch advantage on 1 CPU.
- mpsc_contention/uncontended_channel/catch_unwind_panics: smarm wins as
predicted.
- spawn_storm_busy: smarm 47x slower; global mutex saturated by bg yielders.
2026-05-25 13:04:54 +00:00
Claude
978678a46e
feat: full runtime redesign (v0.6)
...
Complete rewrite with improved architecture & correctness:
- src/runtime.rs: Simplified task scheduling with proper state transitions
- src/scheduler.rs: Decoupled from runtime, pure task queue logic
- src/io.rs, src/mutex.rs: Refactored for clarity & performance
- New actor model framework (src/actor.rs, src/context.rs)
- Channel primitives (src/channel.rs) & process IDs (src/pid.rs)
- Preemption framework (src/preempt.rs) for fair timeslicing
- Expanded benchmarks & tests (multi_scheduler, primes, runtime)
2026-05-23 16:09:35 +00:00
Claude
078447539c
chore: reset working tree (v0.5)
...
Temporary commit clearing working tree for v0.6 rebuild
2026-05-23 16:09:35 +00:00
Claude
e9fdbb1160
refactor: centralize runtime logic (v0.4)
...
Extract scheduler responsibilities into a dedicated Runtime component:
- src/runtime.rs: New centralized control flow (669 lines)
- src/scheduler.rs: Simplified to task queue & preemption management
- tests/runtime.rs: Comprehensive runtime test suite
- benches/multi_scheduler.rs: Multi-runtime scheduling benchmarks
- Improves modularity and enables per-runtime configuration
2026-05-23 16:09:32 +00:00
Claude
0e9d9d7d5f
v0.1: green-thread actors, supervision, channels, benchmark
...
Hand-rolled context switching on mmap'd stacks with guard pages,
allocator-driven RDTSC preemption, unbounded MPSC channels, supervision
via per-slot Signal mailboxes, root supervisor as sentinel PID.
Lib + tests + benches clean check/clippy. All 29 tests pass.
Bench: smarm 3.4% over serial baseline, within 160us of tokio
current-thread on prime-counting fan-out.
2026-05-22 05:01:51 +00:00
