[FFmpeg-devel] [Question] Testing and evaluating runtime performance of functions

[FFmpeg-devel] [Question] Testing and evaluating runtime performance of functions

[Sidd via ffmpeg-devel]

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I have been going through some code and found a couple of FIXME's that
mention the section of code to be "slow" and I was just curious since
I am relatively new to most kinds of profiling, how do you evaluate
this and if anybody were to come up with a patch for this, how can
they reliably show speedups in this?

I am assuming simply using valgrind or perf to cpu profile (on linux
atleast) can do a decent job showcasing certain metrics like cycles
spent, time of execution so on but I would appreciate it if I can get
some clarity on this, as I am unsure of what is expected and the usual
practice here.

PS: Sorry for double mailing my patch. I was not aware that opening a
PR would do the same.

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