tunning-Instruments and Flame Graphs

On mac os, programs may need Instruments to tuning, and when you face too many probe messages, you‘ll need some Flame Graphs.

Here I introduce Brendan Gregg and his blog:

http://www.brendangregg.com/FlameGraphs/cpuflamegraphs.html

and he mestioned one guy make a Flame Graphs with Instruments:

https://schani.wordpress.com/2012/11/16/flame-graphs-for-instruments

and then I try to make some flame on osx.

　　1. open xcode

　　2. input Command+i to open Instruments

　　3. choose "Time Profiler"

　　4. choose one target

　　5. start recording a call tree

　　6. export to out.csv   Instrument -> Export Track

　　7. then use Bredan‘s script to run

stackcollapse-instruments.pl  out.csv | ./flamegraph.pl >mygraph.svg

done.