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Merged
NathanFlurry merged 1 commit into from
Jul 2, 2026
Merged

test(benchmarks): concurrency and interference lanes #205

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3 changes: 3 additions & 0 deletions packages/benchmarks/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -97,6 +97,9 @@ Focused lanes live under `src/focused/` and preserve the legacy CLI flags, env v
- **`dns-lookup-floor`**: warm, repeated, concurrent, and fresh-process DNS lookup rows. Knobs: `BENCH_DNS_LOOKUP_ITERATIONS`, `BENCH_DNS_LOOKUP_WARMUP`, `BENCH_DNS_LOOKUP_ROWS`.
- **`net-tcp-event-floor`**: TCP loopback event-floor rows. Knobs: `BENCH_NET_TCP_ITERATIONS`, `BENCH_NET_TCP_WARMUP`, `BENCH_NET_TCP_ROWS`, `BENCH_NET_TCP_POLL_DELAY_MS`, `BENCH_NET_TCP_TRACE`.
- **`net-tcp-cadence-trace`**: TCP trace attribution rows with bridge tracing enabled.
- **`concurrency-vms`**: N owned sidecars/VMs concurrently run sustained `tcp_echo_small` loops for a fixed wall window. Knobs: `BENCH_CONCURRENCY_COUNTS` (default `1,4,8`), `BENCH_CONCURRENCY_DURATION_MS` (default `5000`).
- **`interference`**: one busy VM alternates CPU spin and filesystem write churn while a second VM samples `fs_write_small`. Knobs: `BENCH_INTERFERENCE_DURATION_MS` (default `5000`), `BENCH_INTERFERENCE_BUSY_DURATION_MS` (default probe duration plus `1000`).
- **`concurrent-processes`**: one VM runs N concurrent guest Node processes doing sustained `fs_write_small` loops, exposing the per-VM service ceiling. Knobs: `BENCH_PROCESS_COUNTS` (default `1,4,8`), `BENCH_PROCESS_DURATION_MS` (default `5000`).
- **`readdir-scaling`**: pure readdir scaling with setup outside the timed loop. Knobs: `BENCH_READDIR_ITERATIONS`, `BENCH_READDIR_WARMUP`, `BENCH_READDIR_ENTRY_COUNTS`, `BENCH_READDIR_MODES`, `BENCH_READDIR_FIXTURES`, `BENCH_READDIR_WORKLOADS`.
- **`readdir-probe`**: guarded/probe readdir shapes.
- **`mount-readdir`**: host mount-table readdir scaling. Knobs: `BENCH_MOUNT_READDIR_ITERATIONS`, `BENCH_MOUNT_READDIR_WARMUP`, `BENCH_MOUNT_READDIR_COUNTS`, `BENCH_MOUNT_READDIR_ENTRY_COUNT`.
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6 changes: 6 additions & 0 deletions packages/benchmarks/run-benchmarks.sh
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Expand Up @@ -223,6 +223,12 @@ run_tsx "net-tcp-cadence-trace" \
--net-bridge-trace \
${BENCH_NET_TCP_TRACE_POLL_DELAY_MS:+--net-poll-delay-ms="${BENCH_NET_TCP_TRACE_POLL_DELAY_MS}"}

run_tsx "concurrency-vms" "$HERE/src/focused/concurrency-vms.bench.ts"

run_tsx "interference" "$HERE/src/focused/interference.bench.ts"

run_tsx "concurrent-processes" "$HERE/src/focused/concurrent-processes.bench.ts"

run_tsx "wasm-command-floor" \
"$HERE/src/focused/wasm-command-floor.bench.ts" \
--iterations="${BENCH_WASM_COMMAND_FLOOR_ITERATIONS:-3}" \
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