When debugging video playback performance issue, we found that pulseaudio is
eating up 100% cpu time. Just in case someone else is having the samilar issue,
please let know.
i believe i have seen this already when there is permission problem on some /dev/snd... and as such pulse is continuously started/killed/restarted. i don't remember all the details unfortunately, but i think it was because i didn't have the right ACL config in the kernel