# brendangregg/FlameGraph

Stack trace visualizer

Repository: https://github.com/brendangregg/FlameGraph
Canonical: https://ross.abutalabs.com/products/flamegraph
Homepage: http://www.brendangregg.com/flamegraphs.html
Language: Perl
License Family: other
Last push: 2024-10-20T21:48:45+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 5375, "days_push": 682, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 19695, forks 2107 (observed 2026-08-28T04:11:29.086380+00:00)

## What it is
The original open-source FlameGraph tools by Brendan Gregg, a set of Perl scripts that convert profiler stack traces into interactive SVG flame graph visualizations. It works with profilers like Linux perf_events, DTrace, SystemTap, and pmcstat via stackcollapse converters.

## Use cases
- visualize CPU profiling stack traces as flame graphs
- find the most frequent code paths in a profiled application
- generate interactive SVG flame graphs from perf script output
- profile memory and off-CPU time
- compare profiles with differential flame graphs
- fold captured stacks from various profilers into a common format

## When to choose
- you need the canonical, widely-supported flame graph tooling
- you profile with perf, DTrace, SystemTap, or similar profilers and want interactive SVG output
- you want lightweight scripts with no dependencies that run anywhere Perl runs

## When to avoid
- you want a modern GUI-based profiler with built-in visualization
- you need a single integrated tool that captures and visualizes profiles in one step
- you require a license for enterprise compliance (the repo has no explicit license)

## Facets
- artifact type: cli-tool
- maturity: stable
- function: data-visualization, benchmarking, developer-tools
- domain: developer-tools, performance, monitoring
- platform: cross-platform, cli
- tags: flame-graphs, profiling, stack-traces, svg, perl, performance-analysis, linux, macos

## Member repositories
- brendangregg/FlameGraph (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:29.086380+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T16:59:52.745237+00:00, confidence not recorded.
  - readme: https://github.com/brendangregg/FlameGraph (fetched 2026-08-28T04:11:29.086380+00:00, sha 21324762bc15)
  - homepage: http://www.brendangregg.com/flamegraphs.html (fetched 2026-08-29T07:58:15.694545+00:00, sha b575c836e817)
  - site_page: https://www.brendangregg.com/blog/about.html (fetched 2026-08-29T07:58:15.704351+00:00, sha 718d7f20e245)
- Data as of 2026-08-30T08:39:29.467469+00:00.