feat(genhttp-11): Enable limited WS

[Kaliumhexacyanoferrat]

Description

---

PR Commands — comment on this PR to trigger (requires collaborator approval):

Command	Description
/benchmark -f <framework>	Run every test the framework subscribes to
/benchmark -f <framework> -t <test>	Run one test only
/benchmark -f <framework> --save	Run and save results (updates the leaderboard on merge)
/benchmark -f <framework> -t <test> --save	Run one test and save results
/benchmark -f <framework> --compare <other>	Measure the deltas against another framework instead of this one

Always specify -f <framework>; the flags combine in any order. Results come back as a comment with a per-profile table of RPS, p99, CPU and memory.

What the deltas are measured against. By default, this framework's own results published on main - answering "did this change help?". When you are tuning a variant or a successor entry, --compare re-bases them on another entry instead:

/benchmark -f genhttp-11 --compare genhttp

The reply states which baseline it used, and profiles the other framework does not run show n/a rather than a delta.

---

Run benchmarks locally

You can validate and benchmark your framework locally with the lite script — no CPU pinning, fixed connection counts, all load generators run in Docker.

./scripts/validate.sh <framework>
./scripts/benchmark-lite.sh <framework> baseline
./scripts/benchmark-lite.sh --load-threads 4 <framework>

Requirements: Docker Engine on Linux. Load generators (gcannon, h2load, h2load-h3, wrk, ghz) are built as self-contained Docker images on first run.

[Kaliumhexacyanoferrat]

/benchmark -f genhttp-11 -t echo-ws-limited --save

[github-actions]

👋 /benchmark request received. A collaborator will review and approve the run.

[MDA2AV]

/benchmark -f genhttp-11 -t echo-ws-limited --save

[github-actions]

👋 /benchmark request received. A collaborator will review and approve the run.

[github-actions]

Benchmark Results

Framework: genhttp-11 | Test: echo-ws-limited

Test	Conn	RPS	CPU	Mem	Δ RPS	Δ Mem
echo-ws-limited	512	1,031,076	5891.2%	351MiB	NEW	NEW
echo-ws-limited	4096	999,151	5891.1%	491MiB	NEW	NEW

Full log

#12 4.505 /source/Tests/Crud.cs(125,31): warning CS8602: Dereference of a possibly null reference. [/source/genhttp.csproj]
#12 4.596   genhttp -> /source/bin/Release/net10.0/genhttp.dll
#12 4.649   genhttp -> /app/
#12 DONE 4.7s

#13 [stage-1 2/3] WORKDIR /app
#13 CACHED

#14 [stage-1 3/3] COPY --from=build /app .
#14 CACHED

#15 exporting to image
#15 exporting layers done
#15 exporting manifest sha256:765950d1607be14b73e042fb85b996dd17df0024c15dccdbc813c4b56b579220 done
#15 exporting config sha256:26292d00fe6e688bc172b561ac29d49364e7d74af9f65b530638ef2d38ad4e4d done
#15 exporting attestation manifest sha256:9a1938282ed6d6938fff7de1e982de4427919f178bd85359fc6568a151cde0fb 0.0s done
#15 exporting manifest list sha256:c2fdbb427b0360817ff4edf4561ab3263aa9c35a3cce30fd81db729fbb2c3493 0.0s done
#15 naming to docker.io/library/httparena-genhttp-11:latest
#15 naming to docker.io/library/httparena-genhttp-11:latest done
#15 unpacking to docker.io/library/httparena-genhttp-11:latest 0.0s done
#15 DONE 0.1s
[info] tuning host for benchmark runs
[info] CPU governor → performance
[info] setting kernel socket limits
[info] setting UDP buffer sizes for QUIC
[info] setting loopback MTU to 1500 (realistic Ethernet)
[info] restarting docker daemon
[info] dropping kernel caches
[info] starting postgres sidecar
[info] postgres ready (seeded)
[info] starting redis sidecar (cpuset=0,64)
[info] redis ready

==============================================
=== genhttp-11 / echo-ws-limited / 512c (tool=gcannon) ===
==============================================
[info] waiting for server...
[info] server ready

[run 1/3]
gcannon v0.5.3 [WS]
  Target:    localhost:8080/ws
  Threads:   64
  Conns:     512 (8/thread)
  Pipeline:  1
  Req/conn:  10
  Expected:  200
  Duration:  5s


  Thread Stats   Avg      p50      p90      p99    p99.9
    Latency    278us    123us    508us   2.76ms   5.33ms

  3564164 frames sent in 5.00s, 3563866 frames received
  Throughput: 712.60K req/s
  Bandwidth:  17.81MB/s
  WS upgrades: 358726
  WS frames:   3563866
  Latency samples: 3563866 / 3563866 responses (100.0%)
  Reconnects: 356280
[info] CPU 5578.4% | Mem 347MiB

[run 2/3]
gcannon v0.5.3 [WS]
  Target:    localhost:8080/ws
  Threads:   64
  Conns:     512 (8/thread)
  Pipeline:  1
  Req/conn:  10
  Expected:  200
  Duration:  5s


  Thread Stats   Avg      p50      p90      p99    p99.9
    Latency    190us    140us    302us   1.32ms   2.76ms

  5137859 frames sent in 5.00s, 5137772 frames received
  Throughput: 1.03M req/s
  Bandwidth:  25.67MB/s
  WS upgrades: 522703
  WS frames:   5137772
  Latency samples: 5137753 / 5137772 responses (100.0%)
  Reconnects: 513770
[info] CPU 5926.3% | Mem 341MiB

[run 3/3]
gcannon v0.5.3 [WS]
  Target:    localhost:8080/ws
  Threads:   64
  Conns:     512 (8/thread)
  Pipeline:  1
  Req/conn:  10
  Expected:  200
  Duration:  5s


  Thread Stats   Avg      p50      p90      p99    p99.9
    Latency    167us    123us    270us   1.06ms   2.66ms

  5154772 frames sent in 5.00s, 5155381 frames received
  Throughput: 1.03M req/s
  Bandwidth:  25.76MB/s
  WS upgrades: 524129
  WS frames:   5155381
  Latency samples: 5154678 / 5155381 responses (100.0%)
  Reconnects: 515439
[info] CPU 5891.2% | Mem 351MiB

=== Best: 1031076 req/s (CPU: 5891.2%, Mem: 351MiB) ===
[info] saved results/echo-ws-limited/512/genhttp-11.json
httparena-bench-genhttp-11
httparena-bench-genhttp-11

==============================================
=== genhttp-11 / echo-ws-limited / 4096c (tool=gcannon) ===
==============================================
[info] waiting for server...
[info] server ready

[run 1/3]
gcannon v0.5.3 [WS]
  Target:    localhost:8080/ws
  Threads:   64
  Conns:     4096 (64/thread)
  Pipeline:  1
  Req/conn:  10
  Expected:  200
  Duration:  5s


  Thread Stats   Avg      p50      p90      p99    p99.9
    Latency    584us    131us   1.48ms   6.00ms   14.70ms

  3447014 frames sent in 5.00s, 3446984 frames received
  Throughput: 689.18K req/s
  Bandwidth:  17.22MB/s
  WS upgrades: 345692
  WS frames:   3446984
  Latency samples: 3446981 / 3446984 responses (100.0%)
  Reconnects: 344681
[info] CPU 5582.8% | Mem 466MiB

[run 2/3]
gcannon v0.5.3 [WS]
  Target:    localhost:8080/ws
  Threads:   64
  Conns:     4096 (64/thread)
  Pipeline:  1
  Req/conn:  10
  Expected:  200
  Duration:  5s


  Thread Stats   Avg      p50      p90      p99    p99.9
    Latency    337us    164us    605us   3.25ms   11.60ms

  4995444 frames sent in 5.00s, 4995757 frames received
  Throughput: 998.91K req/s
  Bandwidth:  24.95MB/s
  WS upgrades: 501345
  WS frames:   4995757
  Latency samples: 4995726 / 4995757 responses (100.0%)
  Reconnects: 499701
[info] CPU 5891.1% | Mem 491MiB

[run 3/3]
gcannon v0.5.3 [WS]
  Target:    localhost:8080/ws
  Threads:   64
  Conns:     4096 (64/thread)
  Pipeline:  1
  Req/conn:  10
  Expected:  200
  Duration:  5s


  Thread Stats   Avg      p50      p90      p99    p99.9
    Latency    301us    159us    487us   3.31ms   8.17ms

  4985325 frames sent in 5.00s, 4985556 frames received
  Throughput: 996.87K req/s
  Bandwidth:  24.91MB/s
  WS upgrades: 500913
  WS frames:   4985556
  Latency samples: 4985551 / 4985556 responses (100.0%)
  Reconnects: 498703
[info] CPU 5844.7% | Mem 521MiB

=== Best: 999151 req/s (CPU: 5891.1%, Mem: 491MiB) ===
[info] saved results/echo-ws-limited/4096/genhttp-11.json
httparena-bench-genhttp-11
httparena-bench-genhttp-11
[info] rebuilding site/data/*.json
[updated] /home/diogo/actions-runner/_work/HttpArena/HttpArena/site/data/frameworks.json
[updated] /home/diogo/actions-runner/_work/HttpArena/HttpArena/site/data/results/genhttp-11.json - 2 new, 28 total
[updated] /home/diogo/actions-runner/_work/HttpArena/HttpArena/site/data/current.json
[info] done
httparena-postgres
httparena-redis
[info] restoring loopback MTU to 65536