Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262127AbUJZDLm (ORCPT ); Mon, 25 Oct 2004 23:11:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262125AbUJZDLb (ORCPT ); Mon, 25 Oct 2004 23:11:31 -0400 Received: from relay02.pair.com ([209.68.5.16]:49935 "HELO relay02.pair.com") by vger.kernel.org with SMTP id S262154AbUJZDLG (ORCPT ); Mon, 25 Oct 2004 23:11:06 -0400 X-pair-Authenticated: 66.190.53.4 Message-ID: <417DC046.1020806@cybsft.com> Date: Mon, 25 Oct 2004 22:11:02 -0500 From: "K.R. Foley" User-Agent: Mozilla Thunderbird 0.8 (X11/20040913) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Lee Revell CC: Rui Nuno Capela , Ingo Molnar , Florian Schmidt , linux-kernel@vger.kernel.org, mark_h_johnson@raytheon.com, Bill Huey , Adam Heath , Thomas Gleixner , Michal Schmidt , Fernando Pablo Lopez-Lezcano , Alexander Batyrshin Subject: Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0 References: <20041022155048.GA16240@elte.hu> <20041022175633.GA1864@elte.hu> <20041025104023.GA1960@elte.hu> <417CDE90.6040201@cybsft.com> <20041025111046.GA3630@elte.hu> <20041025121210.GA6555@elte.hu> <20041025152458.3e62120a@mango.fruits.de> <20041025132605.GA9516@elte.hu> <20041025160330.394e9071@mango.fruits.de> <20041025141008.GA13512@elte.hu> <20041025141628.GA14282@elte.hu> <33313.192.168.1.5.1098733224.squirrel@192.168.1.5> <1098759671.9166.10.camel@krustophenia.net> In-Reply-To: <1098759671.9166.10.camel@krustophenia.net> X-Enigmail-Version: 0.86.1.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 993 Lines: 27 Lee Revell wrote: > On Mon, 2004-10-25 at 20:40 +0100, Rui Nuno Capela wrote: > >>OTOH, jackd -R xruns are awfully back, even thought I (re)prioritize the >>relevant IRQ thread handlers to be always higher than jackd's. > > > Actually they should be lower, except the soundcard. I was only able to > get the xrun free behavior of T3 by setting all IRQ threads except the > soundcard to SCHED_OTHER. Especially important was setting ksoftirqd to > SCHED_OTHER, this actually may have been the only one necessary. > > The relative priorities of jackd and the soundcard irq do not matter as > these two should never contend (aka they are never both runnable at the > same time). > > Lee > > Not being familiar with jack, does it use rtc? kr - 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/