This project visualizes stack traces in hang and spin reports on Mac OS X. It aims to solve the following problem: it's hard to pinpoint quickly a function where the most time is spent in a big stack trace. Big means more than 2 screens long.

The project is heavily inspired by remarkable brendangregg/FlameGraph. But I am implementing everything from scratch in Python, that's why I'm not forking the original project. I'll see how can I contribute my work to Brendan's project.

Usage

There is no proper CLI, you can use something like

python flamegraph.py test_data/Xcode_2013-08-30-203227_Volodymyrs-Mac-mini.hang > test.svg

See Also

Most useful resources:

• http://dtrace.org/blogs/brendan/2011/12/16/flame-graphs/
• https://github.com/brendangregg/FlameGraph
• man spindump
• man sample

Other useful resources:

• http://schani.wordpress.com/2012/11/16/flame-graphs-for-instruments/
• http://samsaffron.com/archive/2013/03/19/flame-graphs-in-ruby-miniprofiler
• http://randomascii.wordpress.com/2013/03/26/summarizing-xperf-cpu-usage-with-flame-graphs/