openjdk/valhalla
Grade a repo

62

/ 100

GradeD

Popular for its size, but the engineering basics lag behind the interest.

Higher than 46% of 5,156 graded repos

https://openjdk.org/projects/valhalla

Documentation37
Engineering63
Health100
Java705GPL-2.01mo ago

A low grade is a to-do list, not a judgment of your code

Most gaps here are documentation, tests, and setup, not the code itself. Closing your top 3 gaps alone would lift this repo to B (82).

See your top fixes
Now
D
62
Potential
B
82

Top fixes

Highest-impact changes first, ranked by point weight

23 to address
  1. 1
    Tests18pt

    Wire your tests to a documented command (e.g. a test script in your build config) so the suite is reproducible.

  2. 2
    CI/CD14pt

    Add a step like `run: npm test`, `run: pytest`, or `run: tox` to your workflow file.

  3. 3
    CI/CD14pt

    Add `pull_request:` to the workflow `on:` triggers.

  4. 4
    CI/CD14pt

    Add a lint step to catch style issues automatically.

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Scorecard

Every check, grouped by category and sorted worst-first

Documentation

37

Install and run instructions9pt0

No install instructions found in the README (−45 pts).

→ Add a section showing how to install dependencies.

README12pt30

This repository is large enough that GitHub truncated the file tree. The scan is based on a partial file list, so some checks may under-report.

Contributing guide5pt47

CONTRIBUTING guide is very brief (−12 pts for depth). 150+ words earns +6 pts; 400+ earns +12 pts.

→ Add setup instructions, code style notes, and how to run tests.

License6pt100

Licensed under GPL-2.0.

Engineering

63

Reproducibility6pt0

No dependency lockfile found (−70 pts).

→ Commit the lockfile for this project's package manager so installs produce the same dependency versions everywhere.

CI/CD14pt40

CI is configured (.github/workflows/build-alpine-linux.yml).

Tests18pt80

Test files detected (make/hotspot/test).

Linting and formatting5pt100

Java/Kotlin linting configured (.editorconfig).

Issue and PR templates6pt100

Issue or PR templates present.

Project health

100

Dependency manifest6pt100

Dependency manifest found (src/utils/IdealGraphVisualizer/Bytecodes/pom.xml).

Repository metadata5pt100

Repository has a description.

Activity5pt100

Actively maintained (pushed within the last month).

Housekeeping3pt100

.gitignore present.

Repository health signals

Activity, community, and responsiveness at scan time

Activity

  • 182 / 875
    Commits (30d / 90d)
  • 176
    Forks
  • 0
    Releases

Community

  • 75% - Good
    Community health
  • 23 bus factor
    authors own >50% of commits
  • 705
    Watchers

Responsiveness

  • -
    Median issue response
  • 24h
    Median PR merge time
  • 16
    Open issues
Repository files19 root entries
  • .github
    Good: CI is configured (.github/workflows/build-alpine-linux.yml).
    Good: Issue or PR templates present.
  • .jcheck
  • bin
  • doc
  • make
    Good: Test files detected (make/hotspot/test).
  • src
    Good: Dependency manifest found (src/utils/IdealGraphVisualizer/Bytecodes/pom.xml).
  • test
  • .editorconfig
    Good: Java/Kotlin linting configured (.editorconfig).
  • .git-blame-ignore-revs
  • .gitattributes
  • .gitignore
    Good: .gitignore present.
  • ADDITIONAL_LICENSE_INFO
  • ASSEMBLY_EXCEPTION
  • configure
  • CONTRIBUTING.md
    Issue: CONTRIBUTING guide is very brief (−12 pts for depth). 150+ words earns +6 pts; 400+ earns +12 pts.Fix: Add setup instructions, code style notes, and how to run tests.
    Issue: Contributing guide lacks a setup section (−12 pts).Fix: Show new contributors how to get a local dev environment running.
    Issue: Contributing guide lacks a code style section (−8 pts).Fix: Describe your linting/formatting rules and how to run them.
    Issue: Contributing guide lacks a testing section (−8 pts).Fix: Show contributors how to run the test suite (e.g. npm test, pytest, cargo test).
    Issue: Contributing guide lacks a PR workflow section (−8 pts).Fix: Explain how to fork, branch, and open a pull request so contributors know what to expect.
    Issue: Contributing guide has no code examples (−5 pts).Fix: Add code blocks showing example commands for setup, running tests, and submitting a PR.
  • LICENSE
    Good: Licensed under GPL-2.0.
  • Makefile
  • README.md
    Good: README is present.
    Issue: README is fairly short (−10 pts). At 400+ chars you get partial credit; 1,500+ earns the full +20 pts.Fix: Expand with a description, install steps, usage, and examples.
    Issue: README has little structure (−15 pts). Add 2-3 headings for +8 pts; 4+ earns +15 pts.Fix: Break it into sections (Overview, Install, Usage, Contributing) using Markdown headings.
    Issue: No screenshots or images in the README (−20 pts).Fix: Add a GIF, screenshot, or logo image. It is the fastest way to show what your project does.
    Issue: README has no code examples (−15 pts).Fix: Show a quick-start snippet so contributors can see what using your project looks like.
    Good: README links to a live demo or deployed app.
    Issue: No status badges in the README (−10 pts).Fix: Add CI/build status badges from shields.io or your CI provider to signal project health.
    Issue: No install instructions found in the README (−45 pts).Fix: Add a section showing how to install dependencies.
    Issue: No run or usage instructions found (−45 pts).Fix: Add a section showing how to start or use the project.
  • SECURITY.md
    Good: Security policy present.
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