Benchmark workflow (mrmlnc/fast-glob)

The Benchmark workflow from mrmlnc/fast-glob, explained and optimized by Latchkey.

CI health: D - needs work

Point runs-on at Latchkey and get caching, run de-duplication, job timeouts, self-healing for flaky steps, and up to 58% lower cost, applied automatically.

Grade your own workflow free or run it on Latchkey →

Source: mrmlnc/fast-glob.github/workflows/benchmark.ymlLicense MITView source

What it does

This is the Benchmark workflow from the mrmlnc/fast-glob repository, a real project running GitHub Actions. It is shown here with attribution under its MIT license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

workflow (.yml)

name: Benchmark

on:
  push:
    branches: ['master', 'releases/*']
  pull_request:
    branches: ['*']

jobs:
  product:
    name: Product benchmark
    concurrency:
      group: ${{ github.workflow }}-benchmark-product-${{ github.ref }}
      cancel-in-progress: true
    runs-on: ubuntu-latest
    steps:
      - name: Setup repository
        uses: actions/checkout@v4
      - name: Setup environment
        uses: actions/setup-node@v4
        with:
          node-version: 22
      - name: Install dependencies
        run: npm install
      - name: Build
        run: node --run build
      - name: Benchmark (async)
        run: node --run bench:product:async
      - name: Benchmark (stream)
        run: node --run bench:product:stream
      - name: Benchmark (sync)
        run: node --run bench:product:sync

  regress:
    name: Regress benchmark with options (${{ matrix.benchmark_options }})
    concurrency:
      group: ${{ github.workflow }}-benchmark-regress-${{ matrix.benchmark_options }}-${{ github.ref }}
      cancel-in-progress: true
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        benchmark_options:
          - '{}'
          - '{ "objectMode": true }'
          - '{ "absolute": true }'
    env:
      BENCHMARK_OPTIONS: ${{ matrix.benchmark_options }}
    steps:
      - name: Setup repository
        uses: actions/checkout@v4
      - name: Setup environment
        uses: actions/setup-node@v4
        with:
          node-version: 22
      - name: Install dependencies
        run: npm install
      - name: Build
        run: node --run build
      - name: Benchmark (async)
        run: node --run bench:regression:async
      - name: Benchmark (stream)
        run: node --run bench:regression:stream
      - name: Benchmark (sync)
        run: node --run bench:regression:sync

  overhead:
    name: Overhead benchmark
    concurrency:
      group: ${{ github.workflow }}-benchmark-overhead-${{ github.ref }}
      cancel-in-progress: true
    runs-on: ubuntu-latest
    steps:
      - name: Setup repository
        uses: actions/checkout@v4
      - name: Setup environment
        uses: actions/setup-node@v4
        with:
          node-version: 22
      - name: Install dependencies
        run: npm install
      - name: Build
        run: node --run build
      - name: Benchmark (async)
        run: node --run bench:overhead:async
      - name: Benchmark (stream)
        run: node --run bench:overhead:stream
      - name: Benchmark (sync)
        run: node --run bench:overhead:sync

The same workflow, on Latchkey

Estimated ~20% faster on cache hits, plus fewer wasted runs and a safer supply chain. Added and changed lines are highlighted.

name: Benchmark
 
on:
  push:
    branches: ['master', 'releases/*']
  pull_request:
    branches: ['*']
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  product:
    timeout-minutes: 30
    name: Product benchmark
    concurrency:
      group: ${{ github.workflow }}-benchmark-product-${{ github.ref }}
      cancel-in-progress: true
    runs-on: latchkey-small
    steps:
      - name: Setup repository
        uses: actions/checkout@v4
      - name: Setup environment
        uses: actions/setup-node@v4
        with:
          cache: 'npm'
          node-version: 22
      - name: Install dependencies
        run: npm install
      - name: Build
        run: node --run build
      - name: Benchmark (async)
        run: node --run bench:product:async
      - name: Benchmark (stream)
        run: node --run bench:product:stream
      - name: Benchmark (sync)
        run: node --run bench:product:sync
 
  regress:
    timeout-minutes: 30
    name: Regress benchmark with options (${{ matrix.benchmark_options }})
    concurrency:
      group: ${{ github.workflow }}-benchmark-regress-${{ matrix.benchmark_options }}-${{ github.ref }}
      cancel-in-progress: true
    runs-on: latchkey-small
    strategy:
      fail-fast: false
      matrix:
        benchmark_options:
          - '{}'
          - '{ "objectMode": true }'
          - '{ "absolute": true }'
    env:
      BENCHMARK_OPTIONS: ${{ matrix.benchmark_options }}
    steps:
      - name: Setup repository
        uses: actions/checkout@v4
      - name: Setup environment
        uses: actions/setup-node@v4
        with:
          cache: 'npm'
          node-version: 22
      - name: Install dependencies
        run: npm install
      - name: Build
        run: node --run build
      - name: Benchmark (async)
        run: node --run bench:regression:async
      - name: Benchmark (stream)
        run: node --run bench:regression:stream
      - name: Benchmark (sync)
        run: node --run bench:regression:sync
 
  overhead:
    timeout-minutes: 30
    name: Overhead benchmark
    concurrency:
      group: ${{ github.workflow }}-benchmark-overhead-${{ github.ref }}
      cancel-in-progress: true
    runs-on: latchkey-small
    steps:
      - name: Setup repository
        uses: actions/checkout@v4
      - name: Setup environment
        uses: actions/setup-node@v4
        with:
          cache: 'npm'
          node-version: 22
      - name: Install dependencies
        run: npm install
      - name: Build
        run: node --run build
      - name: Benchmark (async)
        run: node --run bench:overhead:async
      - name: Benchmark (stream)
        run: node --run bench:overhead:stream
      - name: Benchmark (sync)
        run: node --run bench:overhead:sync

What changed

Run on Latchkey managed runners with one line (runs-on), which apply the fixes below automatically and self-heal transient failures. This example uses latchkey-small; pick the runner size that fits the job.
Cancel superseded runs when a branch or PR gets a newer push.
Cache dependency installs on the setup step so they are served from cache.
Add a job timeout so a hung step cannot burn hours of runner time.

What Latchkey heals here

This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:

Dependency installs

This workflow runs 3 jobs (5 with the matrix expanded) per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow

actions/checkout actions/setup-node