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Date: Thu, 07 Dec 2006 13:07:45 -0800 From: Fernando Lopez-Lezcano <nando@...ma.Stanford.EDU> To: Ingo Molnar <mingo@...e.hu> Cc: nando@...ma.Stanford.EDU, linux-kernel@...r.kernel.org, linux-rt-users@...r.kernel.org, Mike Galbraith <efault@....de>, Clark Williams <williams@...hat.com>, Sergei Shtylyov <sshtylyov@...mvista.com>, Thomas Gleixner <tglx@...utronix.de>, Giandomenico De Tullio <ghisha@...il.it> Subject: Re: v2.6.19-rt6, yum/rpm On Thu, 2006-12-07 at 21:58 +0100, Ingo Molnar wrote: > * Fernando Lopez-Lezcano <nando@...ma.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 :-) I'll try to get something to test smp again... -- Fernando - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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