bench

docs(langgraph): fix async task example (await gather) and clarify blocking behavior in sync example #4943

	name: bench

	on:
	pull_request:
	paths:
	- "libs/**"

	permissions:
	contents: read

	jobs:
	benchmark:
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: libs/langgraph
	steps:
	- uses: actions/checkout@v6
	- id: files
	name: Get changed files
	uses: Ana06/[email protected]
	with:
	format: json
	- name: Set up Python 3.11
	uses: astral-sh/setup-uv@v7
	with:
	python-version: "3.11"
	enable-cache: true
	cache-suffix: "bench"
	- name: Install dependencies
	run: uv sync --group test
	- name: Download baseline
	uses: actions/cache/restore@v4
	with:
	key: ${{ runner.os }}-benchmark-baseline
	restore-keys: \|
	${{ runner.os }}-benchmark-baseline-
	fail-on-cache-miss: true
	path: \|
	libs/langgraph/out/benchmark-baseline.json
	- name: Run benchmarks
	id: benchmark
	run: \|
	{
	echo 'OUTPUT<<EOF'
	make -s benchmark-fast
	echo EOF
	} >> "$GITHUB_OUTPUT"
	- name: Compare benchmarks
	id: compare
	run: \|
	{
	echo 'OUTPUT<<EOF'
	mv out/benchmark-baseline.json out/main.json
	mv out/benchmark.json out/changes.json
	uv run pyperf compare_to out/main.json out/changes.json --table --group-by-speed
	echo EOF
	} >> "$GITHUB_OUTPUT"
	- name: Annotation
	uses: actions/github-script@v8
	with:
	script: \|
	const file = JSON.parse(`${{ steps.files.outputs.added_modified_renamed }}`)[0]
	core.notice(`${{ steps.benchmark.outputs.OUTPUT }}`, {
	title: 'Benchmark results',
	file,
	})
	core.notice(`${{ steps.compare.outputs.OUTPUT }}`, {
	title: 'Comparison against main',
	file,
	})

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