From: Martin Knoblauch Subject: Re: regression: 100% io-wait with 2.6.24-rcX Date: Tue, 22 Jan 2008 10:51:33 -0800 (PST) Message-ID: <581071.24701.qm@web32603.mail.mud.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Linus Torvalds , Mel Gorman , Fengguang Wu , Mike Snitzer , Peter Zijlstra , jplatte@naasa.net, Ingo Molnar , linux-kernel@vger.kernel.org, "linux-ext4@vger.kernel.org" , James.Bottomley@steeleye.com, Jens Axboe , Milan Broz , Neil Brown To: Alasdair G Kergon Return-path: Received: from web32603.mail.mud.yahoo.com ([68.142.207.230]:41900 "HELO web32603.mail.mud.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752541AbYAVSve (ORCPT ); Tue, 22 Jan 2008 13:51:34 -0500 Sender: linux-ext4-owner@vger.kernel.org List-ID: ----- Original Message ---- > From: Alasdair G Kergon > To: Martin Knoblauch > Cc: Linus Torvalds ; Mel Gorman ; Fengguang Wu ; Mike Snitzer ; Peter Zijlstra ; jplatte@naasa.net; Ingo Molnar ; linux-kernel@vger.kernel.org; "linux-ext4@vger.kernel.org" ; James.Bottomley@steeleye.com; Jens Axboe ; Milan Broz ; Neil Brown > Sent: Tuesday, January 22, 2008 3:39:33 PM > Subject: Re: regression: 100% io-wait with 2.6.24-rcX > > > See if these patches make any difference: > http://www.kernel.org/pub/linux/kernel/people/agk/patches/2.6/editing/ > > dm-md-merge_bvec_fn-with-separate-bdev-and-sector.patch > dm-introduce-merge_bvec_fn.patch > dm-linear-add-merge.patch > dm-table-remove-merge_bvec-sector-restriction.patch > nope. Exactely the same poor results. To rule out LVM/DM I really have to see what happens if I setup a system with filesystems directly on partitions. Might take some time though. Cheers Martin