[alsa-devel] ALSA processor usage is too high

Mark Brown broonie at opensource.wolfsonmicro.com
Fri Nov 5 19:51:04 CET 2010

On Fri, Nov 05, 2010 at 02:45:41PM -0400, Adam Rosenberg wrote:

> I am not sure how to interpret this, but I told aplay to play for 3
> minutes from /dev/zero and here are the results:
> root:/> time aplay -d 180 -D hw -t raw -f dat /dev/zero
> Playing raw data '/dev/zero' : Signed 16 bit Little Endian, Rate 48000
> Hz, Stereo
> real    3m 0.10s

This means that the application ran for 3m 0.1s...

> user    0m 0.22s

...during this time it spent 220ms in the actual application

> sys     0m 8.48s

...and 8.48s in kernel mode.

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