Re: v2.6.19-rt6, yum/rpm

[Fernando Lopez-Lezcano <nando@ccrma.Stanford.EDU>]

On Thu, 2006-12-07 at 13:07 -0800, Fernando Lopez-Lezcano wrote:
> On Thu, 2006-12-07 at 21:58 +0100, Ingo Molnar wrote:
> > * Fernando Lopez-Lezcano <nando@ccrma.Stanford.EDU> wrote:
> > 
> > > Much better performance in terms of xruns with Jackd. Hardly any at 
> > > all as it should be. I'm starting to test -rt8 right now.
> > > 
> > > Now, I still don't have an smp machine to test so the improvement 
> > > could be because I'm just running 64 bit up instead of smp. Or it 
> > > could have been the hardware on that other machine that had some 
> > > problem (either because it was starting to fail or because the kernel 
> > > drivers for that hardware were somehow triggering the xruns).
> > 
> > i think it's the UP vs. SMP difference. We are chasing some SMP 
> > latencies right now that trigger on boxes that have deeper C sleep 
> > states. idle=poll seems to work around those problems.
> 
> Oh well, it looked too good, anyway, it is winter here so the extra
> heating should be fine :-)

Hmmm, when I was testing on smp I was running with the speed set to the
top speed of the processors (through the small gnome cpuspeed applet). I
imagine that the C states would not have been the problem...

-- Fernando