From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266957AbTGOJRM (ORCPT ); Tue, 15 Jul 2003 05:17:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266985AbTGOJRM (ORCPT ); Tue, 15 Jul 2003 05:17:12 -0400 Received: from 69-55-72-150.ppp.netsville.net ([69.55.72.150]:44755 "EHLO tiny.suse.com") by vger.kernel.org with ESMTP id S266957AbTGOJRJ (ORCPT ); Tue, 15 Jul 2003 05:17:09 -0400 Subject: Re: RFC on io-stalls patch From: Chris Mason To: Jens Axboe Cc: Andrea Arcangeli , Andrew Morton , marcelo@conectiva.com.br, linux-kernel@vger.kernel.org, akpm@digeo.com In-Reply-To: <20030715091838.GJ833@suse.de> References: <1058229360.13317.364.camel@tiny.suse.com> <20030714175238.3eaddd9a.akpm@osdl.org> <20030715020706.GC16313@dualathlon.random> <20030715054551.GD833@suse.de> <20030715060101.GB30537@dualathlon.random> <20030715060857.GG833@suse.de> <20030715070314.GD30537@dualathlon.random> <20030715082850.GH833@suse.de> <1058260347.4012.11.camel@tiny.suse.com> <20030715091730.GI833@suse.de> <20030715091838.GJ833@suse.de> Content-Type: text/plain Organization: Message-Id: <1058261439.4016.22.camel@tiny.suse.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.2 Date: 15 Jul 2003 05:30:39 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2003-07-15 at 05:18, Jens Axboe wrote: > On Tue, Jul 15 2003, Jens Axboe wrote: > > > BTW, the contest run times vary pretty wildy. My 3 compiles with > > > io_load running on 2.4.21 were 603s, 443s and 515s. This doesn't make > > > the average of the 3 numbers invalid, but we need a more stable metric. > > > > Mine are pretty consistent [1], I'd suspect that it isn't contest but your > > drive tcq skewing things. But it would be nice to test with other things > > as well, I just used contest because it was at hand. > tcq is at 32, the controller is aic7xxx, the drive is an older wdc. > Oh and in the same spirit, I'll do the complete runs on an IDE drive as > well. Sometimes IDE vs SCSI shows the funniest things. Thanks.