# P403n1x87/austin

Python frame stack sampler for CPython

Repository: https://github.com/P403n1x87/austin
Canonical: https://ross.abutalabs.com/products/p403n1x87-austin
Homepage: https://pypi.org/project/austin-dist/
Language: C
License: GPL-3.0
License Family: copyleft
Topics: python, profiling, performance, debugging-tools
Last push: 2026-08-25T13:28:59+00:00

## Health v2 (maintenance only)
Score: 72/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 22, longevity 100
- inputs: {"age_days": 2904, "days_push": 8, "days_rel": 305, "gap_med": 382, "n_releases_24m": 2}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2209, forks 66 (observed 2026-08-28T04:06:26.225631+00:00)

## What it is
Austin is a frame stack sampler for CPython written in C, used to profile running Python processes without instrumentation. It samples stack frames and outputs data suitable for generating flame graphs and other performance visualizations.

## Use cases
- profile a running Python application without modifying its code
- find CPU hotspots in Python programs
- generate flame graphs from Python stack samples
- profile production Python processes with low overhead
- debug performance issues in multi-threaded Python code

## When to choose
- you need a low-overhead sampling profiler for CPython
- you want to profile processes without code instrumentation
- you need cross-platform Python profiling on Linux, macOS, or Windows

## When to avoid
- you need line-level or memory profiling rather than frame stack sampling
- you want a pure-Python profiler that requires no native binary

## Facets
- artifact type: cli-tool
- maturity: active
- function: benchmarking, monitoring, developer-tools
- domain: performance, developer-tools
- platform: windows, cli, cross-platform
- tags: profiling, python, frame-stack-sampler, flame-graphs, sampling-profiler, command-line, linux, macos

## Member repositories
- P403n1x87/austin (main) score 72

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:26.225631+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 2026-08-30T02:46:11.680377+00:00, confidence not recorded.
  - readme: https://github.com/P403n1x87/austin (fetched 2026-08-28T04:06:26.225631+00:00, sha aab1a17834c7)
  - homepage: https://pypi.org/project/austin-dist/ (fetched 2026-08-29T10:26:36.606992+00:00, sha 4b4e8fead74a)
- Data as of 2026-08-30T08:39:29.467469+00:00.