https://github.com/kitlangton/jmh-benchmark-action

A GitHub CI Action for automating the comparison of JMH benchmarking results.
https://github.com/kitlangton/jmh-benchmark-action

Last synced: 10 days ago
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A GitHub CI Action for automating the comparison of JMH benchmarking results.

• Host: GitHub
• URL: https://github.com/kitlangton/jmh-benchmark-action
• Owner: kitlangton
• Created: 2023-08-04T11:23:43.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2023-10-19T17:26:09.000Z (about 1 year ago)
• Last Synced: 2024-10-11T08:45:22.460Z (26 days ago)
• Language: Scala
• Size: 28.2 MB
• Stars: 4
• Watchers: 2
• Forks: 1
• Open Issues: 5
• Metadata Files:
  • Readme: README.md

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README

        
# JMH Benchmarking Action

This GitHub action is designed for running and comparing JMH benchmarks. It runs your benchmarks and checks for any

performance regressions beyond a configurable threshold. When it detects a regression, it can either fail or provide a

warning based on the `failOnRegression` configuration.

If the GitHub event is a pull request, it adds a comment to the PR showing the benchmark comparison. If it's a push

event, it updates the saved benchmark data with the new data (stored in a separate `internal/benchmark-data` branch).

### Example Automated Pull Request Comment

![CleanShot 2023-08-04 at 12 08 55@2x](https://github.com/kitlangton/jmh-benchmark-action/assets/7587245/1e06415a-2966-4c06-b4f5-9d40bea0b271)

Taken from this [Example Project](https://github.com/kitlangton/jmh-benchmark-action-example-project).

## Usage

To use the JMH Benchmarking Action, you need to include it in your GitHub workflow. An example workflow configuration

can be found below:

```yaml

name: Benchmark

on:

  push:

    branches:

      - main

  pull_request:

    branches:

      - main

permissions:

  contents: write

  pull-requests: write

jobs:

  build:

    runs-on: ubuntu-latest

    steps:

      - uses: actions/checkout@v2

      - name: Set up JDK 11

        uses: actions/setup-java@v2

        with:

          java-version: '11'

          distribution: 'adopt'

      - name: Cache SBT dependencies

        uses: coursier/cache-action@v6

      - name: Build and run JMH benchmark

        run: |

          sbt clean compile 

          sbt 'benchmarks/jmh:run -i 3 -wi 3 -f1 -t1 -rf json -rff output.json .*'

      - name: JMH Benchmark Action

        uses: kitlangton/jmh-benchmark-action@main

        with:

          jmh-output-path: benchmarks/output.json

          github-token: ${{ secrets.GITHUB_TOKEN }}

```

When you set up the action, you will need to provide the path to your benchmark output and your GitHub token.

## Configuration

You can configure the action by providing additional parameters. The available parameters are:

- `jmh-output-path`: The file path where your JMH benchmark results are written (e.g., `benchmarks/output.json`).

- `github-token`: Your GitHub token, (e.g., `${{ secrets.GITHUB_TOKEN }}`).

- `fail-on-regression`: (Optional) A boolean that indicates whether the action should fail when it detects regressions

  beyond a certain threshold (defaults to false).

- `failure-threshold`: (Optional) The change beyond which a performance decrease is considered a regression (defaults to

  -0.05).