March 1st, 2024

Austin is a Python frame stack sampler for CPython written in pure C. Samples

are collected by reading the CPython interpreter virtual memory space to

retrieve information about the currently running threads along with the stack

of the frames that are being executed. Hence, one can use Austin to easily

make powerful statistical profilers that have minimal impact on the target

application and that don't require any instrumentation.

Source

Note: Austin will generate extremely huge output files if you are running it against a 5 million LOC Django codebase like I am.

With Django Runserver

austin ./manage.py runserver > /tmp/austin

Throw the /tmp/austin file in: https://www.speedscope.app/

Attaching to a running process

austin -p $PROCESS_NUMBER > /tmp/austin