28717688477
96%

Ran 04 Jul 2026 07:51PM UTC

Jobs 1

Files 33

Run time 1min

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Committed 04 Jul 2026 07:48PM UTC coverage: 96.293% (-0.03%) from 96.32%

Build # 28717688477

Build Type

push

github

Committed by

floatdrop

Commit Message

bench: HTTP/2 benchmark (bench/h2.sh) — h2-over-TLS vs native nginx-h2

zoxy speaks h2 only over TLS+ALPN and translates to h1 upstream, so the
script drives h2load over https at a multiplexing sweep (-m), each level
run direct (nginx's own TLS+http2 listener) vs proxied (zoxy). Reuses
run.sh's core pinning + zoxy CPU sampling.

Findings baked into the notes:
- -m1 (latency): proxied ~107k vs direct ~235k req/s; h2 hop ~+35us at the
  median (TLS term + HPACK + framing + h2->h1 translation), zoxy CPU has
  headroom (latency-bound, not saturated).
- Multiplexed throughput is bounded by h2_legs_max=128 upstream legs PER
  worker: a stream with no free leg gets 503 — bounded zero-alloc shedding,
  served requests stay 200.
- The shed at -m32/-m100 was SO_REUSEPORT imbalance (each h2 conn pins to
  one worker; few conns hash unevenly), not aggregate capacity. Measured
  A/B at -m32 -c8: reuseport spread 8/6/3 -> 78k x 503 while 2 cores idle;
  accept_mode=shared spread 9/8/8 -> 0 shed, clean 194k. -m16 shared:
  proxied 250k vs direct 270k (~92% of native h2), 0 errors.

Harness details: this h2load (1.69.0) has no -k (doesn't verify anyway);
nginx needs keepalive_requests lifted or the direct baseline flatlines at
conns*1000. Flags: -a <accept_mode>, -m "<list>", -c, -d, -t.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Coverage Stats

10884 of 11303 relevant lines covered (96.29%)

0.96 hits per line

Coverage Regressions

Lines	Coverage	∆	File
3	92.11	-7.89%	mem/futex_mutex.zig

Jobs

ID	Job ID	Ran	Files	Coverage
1	28717688477.1	04 Jul 2026 07:51PM UTC	33	96.29	GitHub Action Run

floatdrop / zoxy / 28717688477
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