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Hi all,<BR>
<BR>
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?<BR>
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$ arecord -Dhw:0,0 -c 2 -f S32_LE test.wav CPU% = 1~2%<BR>
$ arecord -c 2 -f S32_LE test.wav CPU% = 15~18% (default device is pulseaudio PCM plugin)<BR>
$ gst-launch alsasrc device="hw:0,0" ! queue ! audioconvert ! wavenc ! filesink location=test.wav CPU% = 2~3% <BR>
$ gst-launch pulsesrc ! queue ! audioconvert ! wavenc ! filesink location=test.wav CPU% = 12~14%<BR>
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Thanks,<BR>
Bin
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