Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1163440AbWLGVmJ (ORCPT ); Thu, 7 Dec 2006 16:42:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1163439AbWLGVmJ (ORCPT ); Thu, 7 Dec 2006 16:42:09 -0500 Received: from smtp1.Stanford.EDU ([171.67.22.28]:45923 "EHLO smtp1.stanford.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1163411AbWLGVmF (ORCPT ); Thu, 7 Dec 2006 16:42:05 -0500 Subject: Re: v2.6.19-rt6, yum/rpm From: Fernando Lopez-Lezcano To: Ingo Molnar Cc: nando@ccrma.Stanford.EDU, linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org, Mike Galbraith , Clark Williams , Sergei Shtylyov , Thomas Gleixner , Giandomenico De Tullio In-Reply-To: <1165525665.9244.39.camel@cmn3.stanford.edu> References: <20061205171114.GA25926@elte.hu> <1165524358.9244.33.camel@cmn3.stanford.edu> <20061207205819.GA21953@elte.hu> <1165525665.9244.39.camel@cmn3.stanford.edu> Content-Type: text/plain Date: Thu, 07 Dec 2006 13:42:03 -0800 Message-Id: <1165527723.9244.45.camel@cmn3.stanford.edu> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 (2.2.3-4.fc4) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1471 Lines: 32 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 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/