Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262583AbUJ0Rr4 (ORCPT ); Wed, 27 Oct 2004 13:47:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262567AbUJ0Ro6 (ORCPT ); Wed, 27 Oct 2004 13:44:58 -0400 Received: from smtp3.netcabo.pt ([212.113.174.30]:51082 "EHLO exch01smtp11.hdi.tvcabo") by vger.kernel.org with ESMTP id S262548AbUJ0RmY (ORCPT ); Wed, 27 Oct 2004 13:42:24 -0400 Message-ID: <32865.192.168.1.5.1098898770.squirrel@192.168.1.5> In-Reply-To: <1098891035.1448.21.camel@krustophenia.net> References: <20041019124605.GA28896@elte.hu> <20041019180059.GA23113@elte.hu> <20041020094508.GA29080@elte.hu> <20041021132717.GA29153@elte.hu> <20041022133551.GA6954@elte.hu> <20041022155048.GA16240@elte.hu> <20041022175633.GA1864@elte.hu> <20041025104023.GA1960@elte.hu> <20041027001542.GA29295@elte.hu> <5225.195.245.190.94.1098880980.squirrel@195.245.190.94> <20041027135309.GA8090@elte.hu> <12917.195.245.190.94.1098890763.squirrel@195.245.190.94> <1098891035.1448.21.camel@krustophenia.net> Date: Wed, 27 Oct 2004 18:39:30 +0100 (WEST) Subject: Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0.4 From: "Rui Nuno Capela" To: "Lee Revell" Cc: "Ingo Molnar" , linux-kernel@vger.kernel.org, mark_h_johnson@raytheon.com, "K.R. Foley" , "Bill Huey" , "Adam Heath" , "Florian Schmidt" , "Thomas Gleixner" , "Michal Schmidt" , "Fernando Pablo Lopez-Lezcano" , "Karsten Wiese" User-Agent: SquirrelMail/1.4.3a X-Mailer: SquirrelMail/1.4.3a MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-Priority: 3 (Normal) Importance: Normal X-OriginalArrivalTime: 27 Oct 2004 17:42:22.0837 (UTC) FILETIME=[50900A50:01C4BC4C] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 924 Lines: 31 > Lee Revell > On Wed, 2004-10-27 at 16:26 +0100, Rui Nuno Capela wrote: >> On RT-V0.4.1, xruns seems slighly reduced, but plenty enough for my >> taste. >> > > Have you tried making ksoftirqd SCHED_OTHER? This drastically reduced > xruns on my system with an earlier version. > > Lee > Hmm... ksoftirqd/0 (or also ksoftirqd/1 on 2cpu SMP) are already SCHED_OTHER by default, at least on both of my boxes that are running RT-V0.4.1 now. Should I try the other way around? Lets see... 'chrt -p -f 90 `pidof ksoftirwd/0`',... yes, apparentely the xrun rate seems to decrease into half, but IMHO not conclusive enough, thought. CU -- rncbc aka Rui Nuno Capela rncbc@rncbc.org - 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/