On Mon, 23 Feb 2004, Kirk Bauer wrote:
> I have a M-Audio Delta 410 and I seem to have it working in 4xstereo
> mode. Now I'm trying to refine my technique, as right now the only way
> I know to send MP3s to a specific device (or channel) is:
>
> mpg123 -s test.mp3 | aplay --device=channel2 --channels=2 -f cd
> --buffer-time=1000000 -
>
> But the problem is that aplay takes up a huge amount of CPU time. Here
> is output from 'top' with two such processes running on different
> channels:
>
> PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND
> 4229 root 15 0 1876 1616 1476 R 32.6 0.4 0:38 aplay
> 4235 root 15 0 1876 1616 1476 R 30.6 0.4 0:38 aplay
> 4228 root 0 -20 3500 3500 3304 S < 5.5 0.9 0:06 mpg123
> 4234 root 0 -20 3436 3436 3240 S < 4.7 0.8 0:05 mpg123
>
> Note that each 'aplay' is taking over 30% of my CPU time while the
> actual MP3 decoder is only taking around 5%.
What's your config? Which plugins do you use?
Jaroslav
-----
Jaroslav Kysela <[EMAIL PROTECTED]>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs
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