Hello JC, > of pulseaudio for each settings. Especially I'd like to check the cpu > consumption or latency. > I tried to googling for this and reviewed code briefly to find some unit > tests for performance checking.. > * oprofile - looks profile each function in point of developer view > * top or ptop or perf top - difficult to check exact start/end time of pulse > * cpu-test.c - looks only for resmapling performance cpu-test and other tests measures sample conversion, channel remapping, volume scaling and channel mixing -- those are micro-benchmarks I found perf a very valuable tool for profiling > I couldn't find proper ways yet. but I believe that there's some official > or usual tools which pulseaudio(or generic linux audio system) experts use > to do benchmark or optimize settings on specific system. > If anybody can recommend something good tools or documents for this > purpose, it would be really helpful for me. probably you'll find that resampling (using done using speex) consumes a large part of the runtime that can easily be identified; one optimization is to avoid resampling if possible PA's low-latency audio processing is very CPU intensive, profiling and improving it is an open issue AFAIK regards, p. -- Peter Meerwald +43-664-2444418 (mobile)
