Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261646AbVBSGsm (ORCPT ); Sat, 19 Feb 2005 01:48:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261645AbVBSGsd (ORCPT ); Sat, 19 Feb 2005 01:48:33 -0500 Received: from viper.oldcity.dca.net ([216.158.38.4]:8148 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S261641AbVBSGre (ORCPT ); Sat, 19 Feb 2005 01:47:34 -0500 Subject: Re: [patch] Real-Time Preemption, -RT-2.6.11-rc3-V0.7.38-01 From: Lee Revell To: Ingo Molnar Cc: linux-kernel@vger.kernel.org In-Reply-To: <1108789704.8411.9.camel@krustophenia.net> References: <20050204100347.GA13186@elte.hu> <1108789704.8411.9.camel@krustophenia.net> Content-Type: text/plain Date: Sat, 19 Feb 2005 01:47:33 -0500 Message-Id: <1108795653.8811.5.camel@krustophenia.net> Mime-Version: 1.0 X-Mailer: Evolution 2.0.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 851 Lines: 21 On Sat, 2005-02-19 at 00:08 -0500, Lee Revell wrote: > On Fri, 2005-02-04 at 11:03 +0100, Ingo Molnar wrote: > > http://redhat.com/~mingo/realtime-preempt/ > > > > Testing on an all SCSI 1.3Ghz Athlon XP system, I am seeing very long > latencies in the journalling code with 2.6.11-rc4-RT-V0.7.39-02. If I mount all filesystems with 'data=writeback', it works perfectly. I can run 'dbench 64', JACK with Hydrogen at 32 frames and have been unable to produce a single xrun. The maximum wakeup latency I have seen is 139us. With 'data=ordered', just launching a web browser can produce an xrun. Lee - 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/