[linux-audio-user] Graphics card an realtime performance

Lee Revell rlrevell at joe-job.com
Tue Feb 7 16:07:35 EST 2006


On Tue, 2006-02-07 at 20:36 +0000, cdr wrote:
> > > get a good realtime performance on my box (buffersize 64 and less) but
> > > when using X some display activity seems to cause xruns. E.g sooperlooper
> 
> ive had decent luck by renicing the X server to a lower priority (higher number) and doing the opposite to jackd.

jackd and JACK clients should never be reniced, they uses RT thread
priorities which are more fine grained than nice values.  This could
lead to incorrect behavior.

If your distro automatically runs X at nice -10 this should be disabled.

>  depending on how your X is started (gdm, xdm, startx) the way to nice it on launch may differ, but give it a shot..
> 
> im not sure 'top' can be trusted. for ex running ices doing a realtime ogg encode takes 5-6% CPU , 

> without X running, and as soon as X is launched, that number doubles, according to top..
> 






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