https://bugs.kde.org/show_bug.cgi?id=393205

--- Comment #22 from Flaviu Tamas <tamasfla...@gmail.com> ---
(In reply to caulier.gilles from comment #19)
> Comment on attachment 112936 [details]
> new flamegraph after the patch was applied
> 
> Which profiling tool did you use to capture cpu idle with digiKam ? 

I used perf, but I wouldn't trust the cpu idle info to be accurate.

For details on how to use perf, there's Brendan Gregg's excellent guide at
http://www.brendangregg.com/perf.html#OneLiners. The tool I used to generate
the flame graph can be found at
http://www.brendangregg.com/perf.html#FlameGraphs.

> Which modifications did you introduce in compilation workflow of digiKam to
> achieve this profiling ?

You must compile with debug information to get accurate stack traces, but
that's it.

> Gilles Caulier

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