pedestal: add Clojure framework

[Ramblurr]

Description

Adds the Pedestal Clojure framework.

---

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
/benchmark-multiple -f <fw1>,<fw2>,...	Benchmark several frameworks in one run — takes -t and --save too; saved results land in a single commit
/benchmark-multiple --save	No -f needed: benchmark and save every framework the PR touches
/benchmark-test -t <test>	Benchmark all enabled frameworks subscribed to <test> and save the results

For /benchmark, 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 — one table per framework on multi runs. A new benchmark comment while a run is in flight queues behind it (one deep) instead of cancelling it. For multi-framework PRs (dependency bumps, same-language refactors) prefer /benchmark-multiple, which runs everything in a single job and commits all saved results together, so no run overwrites another. --compare works on single-framework runs only.

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.

[MDA2AV]

/benchmark -f pedestal --save

[github-actions]

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

[github-actions]

Benchmark Results

Framework: pedestal | Test: all tests

Test	Conn	RPS	CPU	Mem	Δ RPS	Δ Mem
baseline	512	361,510	6107.6%	5.4GiB	~0%	~0%
baseline	4096	309,937	5671.0%	7.6GiB	~0%	~0%
pipelined	512	405,691	3925.5%	4.8GiB	~0%	~0%
pipelined	4096	388,544	4241.6%	7.5GiB	~0%	~0%
limited-conn	512	317,341	5788.1%	5.5GiB	~0%	~0%
limited-conn	4096	356,953	5980.1%	6.9GiB	~0%	~0%
json	4096	76,509	6332.8%	6.8GiB	~0%	~0%
json-comp	512	42,029	6333.6%	3.4GiB	~0%	~0%
json-comp	4096	42,395	6360.3%	5.4GiB	~0%	~0%
json-comp	16384	44,338	6126.2%	7.3GiB	~0%	~0%
upload	32	2,636	2457.9%	1.3GiB	~0%	~0%
upload	256	2,838	4365.7%	1.4GiB	~0%	~0%
static	1024	160,414	6358.3%	3.7GiB	~0%	~0%
static	4096	156,735	6354.7%	5.5GiB	~0%	~0%
static	6800	157,836	6339.1%	5.3GiB	~0%	~0%
async-db	1024	53,380	6428.4%	5.3GiB	~0%	~0%

Full log

[run 1/3]
Running 5s test @ http://localhost:8080
  64 threads and 4096 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency    83.03ms  203.28ms   1.83s    90.39%
    Req/Sec     2.24k     1.21k    8.41k    69.89%
  694327 requests in 5.10s, 41.21GB read
  Socket errors: connect 0, read 0, write 0, timeout 23
Requests/sec: 136146.42
Transfer/sec:      8.08GB
[info] CPU 6153.0% | Mem 3.7GiB

[run 2/3]
Running 5s test @ http://localhost:8080
  64 threads and 4096 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency   110.09ms  238.00ms   1.92s    87.42%
    Req/Sec     2.67k     1.61k   13.27k    69.34%
  796049 requests in 5.10s, 47.25GB read
  Socket errors: connect 0, read 0, write 0, timeout 123
Requests/sec: 156081.86
Transfer/sec:      9.27GB
[info] CPU 6371.8% | Mem 4.7GiB

[run 3/3]
Running 5s test @ http://localhost:8080
  64 threads and 4096 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency    80.27ms  184.49ms   1.86s    89.14%
    Req/Sec     2.52k     1.13k   12.98k    74.25%
  799302 requests in 5.10s, 47.45GB read
  Socket errors: connect 0, read 0, write 0, timeout 126
Requests/sec: 156735.41
Transfer/sec:      9.30GB
[info] CPU 6354.7% | Mem 5.5GiB

=== Best: 156735 req/s (CPU: 6354.7%, Mem: 5.5GiB) ===
[info] saved results/static/4096/pedestal.json
httparena-bench-pedestal
httparena-bench-pedestal

==============================================
=== pedestal / static / 6800c (tool=wrk) ===
==============================================
[info] waiting for server...
[info] server ready

[run 1/3]
Running 5s test @ http://localhost:8080
  64 threads and 6800 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency    44.87ms  146.63ms   1.73s    94.83%
    Req/Sec     2.68k     2.19k   15.24k    72.15%
  691527 requests in 5.10s, 41.05GB read
  Socket errors: connect 0, read 0, write 0, timeout 92
Requests/sec: 135584.49
Transfer/sec:      8.05GB
[info] CPU 6043.3% | Mem 3.6GiB

[run 2/3]
Running 5s test @ http://localhost:8080
  64 threads and 6800 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency    85.65ms  222.27ms   1.97s    90.20%
    Req/Sec     2.51k     1.92k   17.18k    77.28%
  794832 requests in 5.10s, 47.18GB read
  Socket errors: connect 0, read 0, write 0, timeout 214
Requests/sec: 155843.18
Transfer/sec:      9.25GB
[info] CPU 6331.5% | Mem 4.5GiB

[run 3/3]
Running 5s test @ http://localhost:8080
  64 threads and 6800 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency   139.55ms  320.76ms   1.81s    87.89%
    Req/Sec     2.57k     1.71k   14.41k    71.07%
  804926 requests in 5.10s, 47.78GB read
  Socket errors: connect 0, read 0, write 0, timeout 116
Requests/sec: 157836.18
Transfer/sec:      9.37GB
[info] CPU 6339.1% | Mem 5.3GiB

=== Best: 157836 req/s (CPU: 6339.1%, Mem: 5.3GiB) ===
[info] saved results/static/6800/pedestal.json
httparena-bench-pedestal
httparena-bench-pedestal
[info] skip: pedestal does not subscribe to static-tls

==============================================
=== pedestal / async-db / 1024c (tool=gcannon) ===
==============================================
[info] waiting for server...
[info] server ready

[run 1/3]
gcannon v0.5.3
  Target:    localhost:8080/
  Threads:   64
  Conns:     1024 (16/thread)
  Pipeline:  1
  Req/conn:  25
  Templates: 5
  Expected:  200
  Duration:  10s


  Thread Stats   Avg      p50      p90      p99    p99.9
    Latency   18.92ms   7.43ms   42.40ms   168.80ms   403.80ms

  491979 requests in 10.00s, 491289 responses
  Throughput: 49.12K req/s
  Bandwidth:  189.32MB/s
  Status codes: 2xx=491289, 3xx=0, 4xx=0, 5xx=0
  Latency samples: 491289 / 491289 responses (100.0%)
  Reconnects: 19168
  Per-template: 97946,98501,98442,98451,97949
  Per-template-ok: 97946,98501,98442,98451,97949
[info] CPU 6000.6% | Mem 5.2GiB

[run 2/3]
gcannon v0.5.3
  Target:    localhost:8080/
  Threads:   64
  Conns:     1024 (16/thread)
  Pipeline:  1
  Req/conn:  25
  Templates: 5
  Expected:  200
  Duration:  10s


  Thread Stats   Avg      p50      p90      p99    p99.9
    Latency   17.64ms   11.00ms   33.80ms   105.60ms   220.60ms

  533062 requests in 10.00s, 532491 responses
  Throughput: 53.24K req/s
  Bandwidth:  205.65MB/s
  Status codes: 2xx=532491, 3xx=0, 4xx=0, 5xx=0
  Latency samples: 532490 / 532491 responses (100.0%)
  Reconnects: 20935
  Per-template: 106052,106049,106643,107075,106671
  Per-template-ok: 106052,106049,106643,107075,106671
[info] CPU 6382.0% | Mem 5.3GiB

[run 3/3]
gcannon v0.5.3
  Target:    localhost:8080/
  Threads:   64
  Conns:     1024 (16/thread)
  Pipeline:  1
  Req/conn:  25
  Templates: 5
  Expected:  200
  Duration:  10s


  Thread Stats   Avg      p50      p90      p99    p99.9
    Latency   17.38ms   10.70ms   33.40ms   107.10ms   224.50ms

  534441 requests in 10.00s, 533807 responses
  Throughput: 53.37K req/s
  Bandwidth:  205.95MB/s
  Status codes: 2xx=533807, 3xx=0, 4xx=0, 5xx=0
  Latency samples: 533806 / 533807 responses (100.0%)
  Reconnects: 21007
  Per-template: 106066,106743,107183,107318,106496
  Per-template-ok: 106066,106743,107183,107318,106496
[info] CPU 6428.4% | Mem 5.3GiB

=== Best: 53380 req/s (CPU: 6428.4%, Mem: 5.3GiB) ===
[info] input BW: 3.56MB/s (avg template: 70 bytes)
[info] saved results/async-db/1024/pedestal.json
httparena-bench-pedestal
httparena-bench-pedestal
[info] skip: pedestal does not subscribe to crud
[info] skip: pedestal does not subscribe to fortunes
[info] skip: pedestal does not subscribe to baseline-h2
[info] skip: pedestal does not subscribe to static-h2
[info] skip: pedestal does not subscribe to baseline-h2c
[info] skip: pedestal does not subscribe to json-h2c
[info] skip: pedestal does not subscribe to baseline-h3
[info] skip: pedestal does not subscribe to static-h3
[info] skip: pedestal does not subscribe to gateway-64
[info] skip: pedestal does not subscribe to gateway-h3
[info] skip: pedestal does not subscribe to production-stack
[info] skip: pedestal does not subscribe to unary-grpc
[info] skip: pedestal does not subscribe to unary-grpc-tls
[info] skip: pedestal does not subscribe to stream-grpc
[info] skip: pedestal does not subscribe to stream-grpc-tls
[info] skip: pedestal does not subscribe to echo-ws
[info] skip: pedestal does not subscribe to echo-ws-pipeline
[info] skip: pedestal does not subscribe to echo-ws-limited
[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/pedestal.json - 16 new, 16 total
[updated] /home/diogo/actions-runner/_work/HttpArena/HttpArena/site/data/current.json
[info] done
httparena-postgres
[info] restoring loopback MTU to 65536