On Tue, 2012-08-14 at 20:49 -0600, Kelly Anderson wrote: > In profiling with oprofile on CuBox the code that is hogging cpu is the > Speex resampler. The original reporter had high cpu use also when pulseaudio was supposed to be idle. Do you have the same problem? > I am currently trying to figure out how to get pulseaudio open without > triggering the resampler. There are about 3 tests in pulseaudio which > check for > the need to resample. If any of them evaluate as true, resampling kicks in. > > To avoid resampling: > > 1. you can't use variable sample rate > 2. the channel maps have to match > 3. the sample rate has to match You can add "the sample format has to match" to the list, but sample rate conversion is the expensive operation. I believe converting between different channel maps and sample formats is trivial in comparison. -- Tanu
