flame-graph-analyzer SKILL.md skillA
flame-graph-analyzer from testland/qa is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add testland/qa/flame-graph-analyzer@git:20260813.bc28491Pins git:20260813.bc28491 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- testland/qa
- Path
plugins/qa-load-testing/skills/flame-graph-analyzer/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260813.bc28491, committed Aug 13, 2026
- First version recorded
- Jul 18, 2026
- Size
- 8,014 bytes
- Repository stars
- 11
- License
- MIT
Reads CPU flame-graph output from py-spy (Python), async-profiler (JVM), Go pprof, or Node.js `perf_hooks` / clinic.js: identifies the hot path (top sample-time frames), classifies the bottleneck (CPU-bound vs lock contention vs allocator pressure), and proposes the next investigation step. Use when a perf regression is bisected to a commit but the hot path inside it is unclear; for tail-latency percentiles use the latency-percentiles reference in k6-load-testing, and for a slow SQL hot path…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# flame-graph-analyzer ## Overview Canonical flame-graph reference: [brendan-gregg-flame][bg]. The widest leaf (bottom of the stack) is the hot path. [bg]: https://www.brendangregg.com/flamegraphs.html Each runtime produces flame graphs from its own profiler - py-spy (Python), async-profiler (JVM), Go's built-in `pprof`, `clinic.js flame` (Node.js), and `perf` / eBPF (native C/C++/Rust). This skill is **language-agnostic**: it consumes the profiler output (SVG, JSON, or folded-stacks `.txt`) and surfaces a hypothesis the engineer can act on. Per-runtime capture commands live in [references/capturing-and-interpreting-flame-graphs.md](references/capturing-and-interpreting-flame-graphs.md). ## When to use - A perf regression has been bisected but the introducing commit touches multiple functions; the team needs to know which function is the actual hot path. - A load test under `k6-load-testing` or a sibling shows latency growth, but the API code hasn't visibly changed - the flame graph reveals the runtime cause. - A production incident showed CPU saturation; the team has captured a profile and needs to triage before reducing fleet size. …
Read the whole file at its exact version.
How to install
mdr add testland/qa/flame-graph-analyzer@sha256:86b9872664cbe933The line at the top of this page pins the label git:20260813.bc28491, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_na2qorstme7rdb67)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jul 18, 2026 and Aug 13, 2026, about one every 7 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260813.bc28491 latest | 2026-08-13 | bc28491 | 8,014 B | A | view · diff |
| git:20260726.8b2e4a2 | 2026-07-26 | 8b2e4a2 | 8,035 B | A | view · diff |
| git:20260725.09af35b | 2026-07-25 | 09af35b | 7,891 B | A | view · diff |
| git:20260724.d4db756 | 2026-07-24 | d4db756 | 10,927 B | A | view · diff |
| git:20260718.ab29907 | 2026-07-18 | ab29907 | 11,052 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8014 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
testland/qa · 11 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_na2qorstme7rdb67 GET https://markdownregistry.com/api/v1/resolve?ref=testland/qa/flame-graph-analyzer GET https://markdownregistry.com/api/v1/blob/86b9872664cbe9334930025995f0411d77e4fe68820b2c3a4d50e698b436def1
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.