[linux-audio-user] Kernel 2.6.x latency

Sampo Savolainen v2 at iki.fi
Thu Mar 11 03:34:29 EST 2004


Yes. I have pre-empt enabled from the kernel configuration. Is there
something I need to do from the running system to enable it?

(I mean something like:
 echo 1 > /proc/sys/.../lowlatency )

 Sampo

Frank Barknecht <fbar at footils.org>:

> Hallo,
> Sampo Savolainen hat gesagt: // Sampo Savolainen wrote:
> 
> > I'm trying to get jack & ardour working with the 2.6.x kernels. Do you
> > have any hints/tips? I've now tried:
> >  debian 2.6.2
> >  debian 2.6.3
> >  debian 2.6.3 modified with LSM support + realtime module
> >  standard 2.6.4-rc2-mm1 (couldn't get realtime module working)
> >  standard 2.6.3-mm4 LSM support + realtime module (kinda working..)
> > 
> > None of these have provided me with sufficient latency. Jack keeps
> > throwing Ardour out for stupid reasons like closing the mixer window. 
> > 
> > (with realtime module, I mean http://www.joq.us/realtime/)
> > 
> > Is there some magic trick I've forgotten to do, or I haven't heard of?
> I
> > have DMA enabled on my harddrive, and this same system runs like dream
> > with 2.4 kernels.
> 
> Just to make sure: you did enable kernel preemption, didn't you?
> 
> ciao
> -- 
>  Frank Barknecht                               _ ______footils.org__
> 



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