From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264419AbUGMBBM (ORCPT ); Mon, 12 Jul 2004 21:01:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264444AbUGMBBM (ORCPT ); Mon, 12 Jul 2004 21:01:12 -0400 Received: from viper.oldcity.dca.net ([216.158.38.4]:4523 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S264419AbUGMBBI (ORCPT ); Mon, 12 Jul 2004 21:01:08 -0400 Subject: Re: [linux-audio-dev] Re: [announce] [patch] Voluntary Kernel Preemption Patch From: Lee Revell To: Andrew Morton Cc: Paul Davis , linux-audio-dev@music.columbia.edu, mingo@elte.hu, arjanv@redhat.com, linux-kernel@vger.kernel.org In-Reply-To: <20040712170649.6f4c0c71.akpm@osdl.org> References: <20040712163141.31ef1ad6.akpm@osdl.org> <200407122358.i6CNwvBD003469@localhost.localdomain> <20040712170649.6f4c0c71.akpm@osdl.org> Content-Type: text/plain Message-Id: <1089680476.10777.106.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Mon, 12 Jul 2004 21:01:16 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2004-07-12 at 20:06, Andrew Morton wrote: > Paul Davis wrote: > > > > >resierfs: yes, it's a problem. I "fixed" it multiple times in 2.4, but the > > >fixes ended up breaking the fs in subtle ways and I eventually gave up. > > > > andrew, this is really helpful. should we conclude that until some > > announcement from reiser that they have addressed this, the reiserfs > > should be avoided on low latency systems? > > > > It seems that way, yes. I do not know how common the holdoffs are in real > life. It would be interesting if there was a user report that switching > from reiserfs to ext2/ext3 actually made a difference - this would tell us > that it is indeed a real-world problem. > This was not a synthetic benchmark, I would consider this a 'real-world' problem now. Repeating the test with ext3 would just tell you whether it has the same problem. If it is neccesary to get the reiserfs issue addressed, I will repeat the test with an ext3 system in the next few days, I would like to hear from reiser on this before doing much more. > Note that this info because available because someone set > /proc/asound/*/*/xrun_debug. We need more people doing that. > - This goes back to the need for ALSA documentation. Someone needs to write some. This will probably require paying that person. Hopefully SuSe is working on this, though I suspect I would have heard something. > 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/ >