Hi all, It seems both pulseaudio alsa PCM plugin (source) and gstreamer pulsesrc consume much more CPU resource than alsa when working on the same sample (rate, channel and format). I had a rough look at the source code and found they both use the threaded mainloop model. Can we have any chance to optimize for this? $ arecord -Dhw:0,0 -c 2 -f S32_LE test.wav CPU% = 1~2% $ arecord -c 2 -f S32_LE test.wav CPU% = 15~18% (default device is pulseaudio PCM plugin) $ gst-launch alsasrc device="hw:0,0" ! queue ! audioconvert ! wavenc ! filesink location=test.wav CPU% = 2~3% $ gst-launch pulsesrc ! queue ! audioconvert ! wavenc ! filesink location=test.wav CPU% = 12~14% Thanks, Bin -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20100315/65736699/attachment.htm>
