[FFmpeg-devel] [BASIC QUESTION] Profiling tool for ffmpeg

[Cesar Matheus]

Hi, I'm a CS student working on an optimisation of the ebur128 filter. First I'm looking for the nicest way to get information on code performance.
I saw  that the configuration flag   "--enable-linux-perf"      enables Linux Performance Monitor API, I've been using the perf tool with the following commands for example :

./perf record -F 99 -a -g --call-graph dwarf ./ffmpeg -i test.wav -vn -af loudnorm=print_format=summary:dual_mono=true -f null /dev/null

but I'm not quite satisfate with the result. 

Do you have any advice on how to properly extract informations such as execution time, function call graph etc.. in such a case using profiling tool (perf or gprof for example ?

Thank you very much,
César Mathéus