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 <[email protected]> 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
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