Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932497AbWBXWdA (ORCPT ); Fri, 24 Feb 2006 17:33:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932500AbWBXWdA (ORCPT ); Fri, 24 Feb 2006 17:33:00 -0500 Received: from relay01.mail-hub.dodo.com.au ([203.220.32.149]:44252 "EHLO relay01.mail-hub.dodo.com.au") by vger.kernel.org with ESMTP id S932497AbWBXWc7 (ORCPT ); Fri, 24 Feb 2006 17:32:59 -0500 From: Grant Coady To: Bryan Fink Cc: Andrew Morton , Trond Myklebust , linux-kernel@vger.kernel.org Subject: Re: NFS Still broken in 2.6.x? Date: Sat, 25 Feb 2006 09:32:50 +1100 Organization: http://bugsplatter.mine.nu/ Reply-To: gcoady@gmail.com Message-ID: References: <43FE1CAD.3050806@eventmonitor.com> <1140734824.7963.38.camel@lade.trondhjem.org> <20060224041435.733b4f0d.akpm@osdl.org> <43FF31E4.2000705@eventmonitor.com> In-Reply-To: <43FF31E4.2000705@eventmonitor.com> X-Mailer: Forte Agent 2.0/32.652 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1219 Lines: 25 On Fri, 24 Feb 2006 11:18:44 -0500, Bryan Fink wrote: >Hi again. I just found some new, very interesting information. Until >just a few minutes ago, I hadn't realized that one could change the I/O >scheduler at runtime. Looking into it, my system was using "cfq", and I >have three other options, "noop", "anticipatory", and "deadline". I've >now run tests using all three of the other schedulers, and they all >bring performance back up to the level I had with kernel 2.4. So, either >NFS is incompatible with cfq, or cfq has some issues that show very >vividly when used with NFS (or, I suppose, I just have my system tuned >wrong for use with cfq). I run NFS for ages -- all linux boxen here mount a shared export from localnet controller box to get source + patches. Only have 'deadline' installed on 2.6 kernels -- not seen any problems with NFS here (apart from back when I had data corruption due a faulty memory stick). Grant. - 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/