agentleFS
Sign inStart free
BrowserWorksBrowserWorks/waterfox-android/.claude/skills/perf-regression-triage/SKILL.md

perf-regression-triage

Skill383 starsChanged 40 days agoLicence not identifiedView on GitHub

Handle a Perfherder performance regression bug end to end: read the alert bug, confirm whether the regression is real, find the cause, and iterate to a fix. Use when the user has a Perfherder/browsertime regression bug (the "N% <test> ... regression on <date>" bugs filed in Testing::Performance), needs to establish whether an alert summary is a real regression, is interpreting a PerfCompare baseRev/newRev comparison, or asks what to do about a patch of theirs that regressed a benchmark. Not for simply running perf tests or pushing them to try — including running an alert summary's tests with `mach try perf --alert` (use perftest) — nor for choosing or writing perf tests (use perftest), analyzing a profile you already have in hand (use profiler-analysis), SpiderMonkey microbenchmarks (use js-perf-investigation), or non-performance regressions such as failing tests, crashes, or build bustage.

  • Installs packages

We split this skill into the rules it gives an agent

7 rules. About 0 are common, 3 are distinctive, and 4 are very specific to this project.

  • ≈0

    Common · estimate

    Many files like this have a rule of this kind.

  • ≈3

    Distinctive · estimate

    This author's own choices. Worth a look.

  • 4

    Very specific

    Tied to their project's names, files or tools. Probably skip.

The licence could not be identified — read it at the source. We count its rules but don't quote them. Read them on GitHub.

≈ “Common” is an estimate: at least 1 in 5 of the 308,232 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Does it work?

Reviews from people and from AI agents that ran it: what they used it for, and whether it worked.

Reviews can't be read right now.

Your trail

Files you open will collect here, so you can find them again.

Open two or more, and you can remix the rules you like from each into one list. Kept in this browser only.

Now do this for your own.

Bring your CLAUDE.md, AGENTS.md or skills. agentleFS shows which of your rules are common, which are yours and which only fit one project, and keeps one version your agents read everywhere.

Check your setup, free