neod and pusleaudio -- evil tandem? ;-)
site-openmoko.org at onerussian.com
Sat Jul 26 04:05:12 CEST 2008
> I'm trying to improve mediaplayer, and a big part of that is improving
> performance. If you figure out why pulseaudio eats 6% CPU, that'd be
> great! Also, it mysteriously eats much more than that when music is
> being played back.
well -- whenever it is playing my wild guess is that it resamples it
from 44100 to hardware supported 48000, or smth like that... for that I
guess it would need some cpu cycles
the mystery in my case is that pulseaudio doesn't play anything but does
consume significant amount of cpu cycles
> My theory is that it's doing unnecessary signal resampling and
> int->float->int conversions. Having mediaplayer bypass pulseaudio and
> talk directly to alsa saves a lot of CPU.
ie it works like that for sure (ie have you tried it)?
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