[pulseaudio-discuss] arecord CPU consumption high with pulseaudio
jim at duda.tzo.com
Sat Mar 29 12:11:25 PDT 2008
I've noticed that when I use arecord without pulse, raw alsa, the cpu
consumption of arecord is very low, almost zero.
However, when using arecord with pulseaudio, I find cpu consumption very
With 0.9.6, I found that arecord ran in the high 90's, and using ^C to
kill the process wasn't useful. I had to kill -9.
With >= 0.9.9, I found that arecord ran around 75%, and using ^C would
I have a 2.8 Ghz P4 with hyperthreading.
Is it expected that arecord usage be so high with pulseaudio?
I also found another curious note. With 0.9.6, a combined_sink results
in pulseaudion consuming ~ 10-20% cpu while playing a wav file. With >=
0.9.10, I have found that using a combined_sink now consumes 50%. I
don't find this unreasonable giving what combined sink is doing, just
thought I'd pass on my findings.
load-module module-combine sink_name=misterhouse
Just attempting to route audio out 2 different cards.
More information about the pulseaudio-discuss