Benchmarks #106

	name: Benchmarks

	# Publish-only: runs benchmarks, pushes results to the gh-pages branch where
	# benchmark-action renders a chart. Never gates a PR merge. Annotates points
	# that regressed by 50%+ but does not fail the workflow.

	on:
	push:
	branches: [main]
	schedule:
	- cron: '0 6 * * *' # daily at 06:00 UTC
	workflow_dispatch:

	# Needed by benchmark-action to push to gh-pages.
	permissions:
	contents: write
	deployments: write

	jobs:
	bench:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- uses: actions/setup-go@v5
	with:
	go-version: '1.23'

	# -count=5 averages over five runs to dampen shared-runner noise.
	# -run='^$' skips tests so only benchmarks execute.
	- name: Run benchmarks
	run: \|
	go test -bench=. -benchmem -count=5 -run='^$' \
	./tests/benchmarks/... \| tee output.txt

	- name: Publish chart
	uses: benchmark-action/github-action-benchmark@v1
	with:
	tool: 'go'
	output-file-path: output.txt
	github-token: ${{ secrets.GITHUB_TOKEN }}
	gh-pages-branch: gh-pages
	benchmark-data-dir-path: 'dev/bench'
	auto-push: true
	# Annotate 1.5x regressions but never fail or comment.
	alert-threshold: '150%'
	fail-on-alert: false
	comment-on-alert: false
	summary-always: true

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