bench.yml

name: Benchmarks

# GitHub-hosted runners are noisy — benches here track the *order of magnitude*
# baseline rather than fail on small regressions. They run on master pushes and
# on demand. PRs intentionally do NOT run benches: they're slow and the noise
# floor would just produce false alarms.

on:
  push:
    branches: [master, main]
  workflow_dispatch:

env:
  CARGO_TERM_COLOR: always
  CARGO_INCREMENTAL: 0

jobs:
  bench:
    name: Criterion benches
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6.0.2
      - uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2
        with:
          # Bench builds use the release profile; cache it under its own key
          # so it doesn't fight with the test job's debug cache.
          key: bench
      - name: Run criterion benches (each macro)
        run: |
          set -euo pipefail
          mkdir -p bench-output
          while read -r crate bench
          do
            echo "::group::$crate/$bench"
            cargo bench -p "$crate" --bench "$bench" -- \
              --warm-up-time 1 --measurement-time 3 \
              | tee "bench-output/$crate-$bench.txt"
            echo "::endgroup::"
          done <<'BENCHES'
          ras-jsonrpc-macro dispatch
          ras-rest-macro dispatch
          ras-file-macro streaming
          ras-jsonrpc-bidirectional-macro roundtrip
          BENCHES
      - name: Upload bench artifacts
        if: always()
        uses: actions/upload-artifact@v7.0.1
        with:
          name: criterion-results
          path: |
            bench-output/
            target/criterion/
          retention-days: 30