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|
name: Performance Comparison for Pull Requests
on:
pull_request:
branches: [master]
jobs:
benchmark-pr:
name: Performance benchmark comparison
runs-on: ubuntu-latest
steps:
- name: Checkout PR branch
uses: actions/checkout@v4
with:
ref: ${{ github.event.pull_request.head.sha }}
- name: Set up Go
uses: actions/setup-go@v5
with:
go-version: 'stable'
# Save commit SHAs for display
- name: Save commit info
id: commits
run: |
BASE_SHA="${{ github.event.pull_request.base.sha }}"
HEAD_SHA="${{ github.event.pull_request.head.sha }}"
echo "base_short=${BASE_SHA:0:7}" >> $GITHUB_OUTPUT
echo "head_short=${HEAD_SHA:0:7}" >> $GITHUB_OUTPUT
# Run benchmark on PR branch
- name: Run benchmark on PR branch
run: |
go test -bench '.' -benchtime=2s -benchmem ./... | tee pr-bench.txt
# Checkout base branch and run benchmark
- name: Checkout base branch
uses: actions/checkout@v4
with:
ref: ${{ github.event.pull_request.base.sha }}
clean: false
path: base
- name: Run benchmark on base branch
working-directory: base
run: |
go test -bench '.' -benchtime=2s -benchmem ./... | \
tee ../base-bench.txt
# Install benchstat for comparison
- name: Install benchstat
run: go install golang.org/x/perf/cmd/benchstat@latest
# Compare benchmarks using benchstat
- name: Compare benchmarks with benchstat
id: benchstat
run: |
cat > comparison.md << 'EOF'
## Benchmark Comparison
Comparing base branch (`${{ steps.commits.outputs.base_short }}`)
vs PR branch (`${{ steps.commits.outputs.head_short }}`)
```
EOF
benchstat base-bench.txt pr-bench.txt >> comparison.md || true
echo '```' >> comparison.md
# Post-process to append percentage + emoji column (🚀 faster < -10%, 🐌 slower > +10%, otherwise ➡️)
if [ ! -f comparison.md ]; then
echo "comparison.md not found after benchstat." >&2
exit 1
fi
python3 .github/scripts/benchmark_formatter.py
# Save PR number
- name: Save PR number
run: |
PR_NUMBER="${{ github.event.pull_request.number }}"
if [ -z "$PR_NUMBER" ]; then
echo "Error: Pull request number is not available in event payload." >&2
exit 1
fi
echo "$PR_NUMBER" > pr_number.txt
# Upload benchmark results
- name: Upload benchmark results
uses: actions/upload-artifact@v4
with:
name: benchmark-results
path: |
comparison.md
pr_number.txt
|
