Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753674AbXAAW5q (ORCPT ); Mon, 1 Jan 2007 17:57:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753623AbXAAW5q (ORCPT ); Mon, 1 Jan 2007 17:57:46 -0500 Received: from smtpq1.groni1.gr.home.nl ([213.51.130.200]:53986 "EHLO smtpq1.groni1.gr.home.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751784AbXAAW5p (ORCPT ); Mon, 1 Jan 2007 17:57:45 -0500 Message-ID: <45999191.8020004@gmail.com> Date: Mon, 01 Jan 2007 23:56:17 +0100 From: Rene Herman User-Agent: Thunderbird 1.5.0.9 (X11/20061206) MIME-Version: 1.0 To: Tejun Heo , Jens Axboe CC: Alan Cox , linux-kernel@vger.kernel.org, Linus Torvalds Subject: Re: 2.6.20-rc2+: CFQ halving disk throughput. References: <45893CAD.9050909@gmail.com> <45921E73.1080601@gmail.com> <4592B25A.4040906@gmail.com> <45932AF1.9040900@gmail.com> <45998F62.6010904@gmail.com> In-Reply-To: <45998F62.6010904@gmail.com> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit X-AtHome-MailScanner-Information: Please contact support@home.nl for more information X-AtHome-MailScanner: Found to be clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 665 Lines: 18 Rene Herman wrote: > In fact, it's CFQ. The PATA thing was a red herring. 2.6.20-rc2 and 3 > give me ~ 24 MB/s from "hdparm t /dev/hda" while 2.6.20-rc1 and below > give me ~ 50 MB/s. > > Jens: this is due to "[PATCH] cfq-iosched: tighten allow merge > criteria", 719d34027e1a186e46a3952e8a24bf91ecc33837: axboe@oracle.com bounces for me. Could one of the other recipients of parent message try to forward? Rene. - 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/