alsa vs. aRts
Jonathan Ryshpan
jonrysh at pacbell.net
Mon Apr 12 09:13:54 UTC 2004
EXECUTIVE SUMMARY: Upgrade alsa to version 1.04, if you're running KDE.
I run the alsa sound system with OSS emulation and KDE. The KDE sound
server, aRts, has been crashing recently with a CPU overload message. A
check with a system monitor showed that aRts was consuming about 60% of
the CPU, even with no sound playing. After some web searching, I found
that aRts and sound drivers sometimes have a disagreement about buffer
management, which causes aRts to use lots of CPU.
Upgrading from alsa-1.02 to alsa-1.04 has cut aRts CPU usage down to
about 1% CPU when sound is running and 0%, when no sound is running
(though I don't know why really). ARts no longer crashes, and the
system is a whole lot faster overall.
Jonathan Ryshpan
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