ci: reduce GitHub Actions costs #2177
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- Add concurrency groups to cancel in-progress runs on new commits - Switch Test, Clippy, six-peer tests from freenet-default-runner to ubuntu-latest - Remove redundant cancel-workflow-action steps (native concurrency handles this) - Reduce six_peer_regression timeout from 120m to 30m - Skip cross-compile on PRs (only run on main/tags) Estimated savings: ~50% reduction in CI costs by using standard runners instead of larger runners, and avoiding duplicate work. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
Nova has 128GB RAM and fast network, configured with mold linker and sccache for fast builds. Eliminates GitHub Actions billing entirely. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
Jobs now run in order from fastest to slowest: 1. Conventional Commits (~5s) 2. Fmt (~10s) 3. Clippy (~3-5min) 4. Test (~10-15min) 5. six-peer tests (after Test) This ensures simple issues like formatting or commit messages fail immediately rather than waiting for long builds. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
Add `needs` dependencies to chain jobs in order of execution time: 1. Conventional Commits (fastest, ~5s) 2. Fmt (needs Conventional Commits, ~10s) 3. Clippy (needs Fmt, ~3-5min) 4. Test (needs Clippy, ~10-15min) 5. six-peer tests (needs Test) With a single self-hosted runner, this ensures faster checks run first and fail fast, avoiding wasted time on slow tests when simple checks would fail anyway. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
Remove /tmp/freenet and /tmp/freenet-* directories before running tests to prevent permission denied errors when the self-hosted runner user cannot access directories created by other users. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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Problem
Hit the $300/month GitHub Actions budget. Analysis showed expensive jobs running on
freenet-default-runner(larger GitHub-hosted runner).Solution
Set up a self-hosted runner on nova (128GB RAM, fast network) and switched CI to use it.
Changes
Self-hosted runner - Configured
nova-runnerwith labelsself-hosted, Linux, X64, novaNative concurrency cancellation - Added
concurrencygroups to auto-cancel in-progress runs when new commits pushReduced timeout -
six_peer_regressiontimeout reduced from 120m → 30mSkip cross-compile on PRs - Release binaries only need to build on main/tags
Cost Impact
Testing
This PR will test itself on the new nova runner.
[AI-assisted - Claude]