Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S269371AbUICIMo (ORCPT ); Fri, 3 Sep 2004 04:12:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S269362AbUICIMm (ORCPT ); Fri, 3 Sep 2004 04:12:42 -0400 Received: from s2.ukfsn.org ([217.158.120.143]:53911 "EHLO mail.ukfsn.org") by vger.kernel.org with ESMTP id S269373AbUICIJk (ORCPT ); Fri, 3 Sep 2004 04:09:40 -0400 Message-ID: <413826C1.1010203@dgreaves.com> Date: Fri, 03 Sep 2004 09:09:37 +0100 From: David Greaves User-Agent: Mozilla Thunderbird 0.7.3 (X11/20040830) X-Accept-Language: en-us, en MIME-Version: 1.0 To: "J.A. Magallon" Cc: linux-kernel@vger.kernel.org Subject: Re: md RAID over SATA performance References: <1094169937l.17931l.0l@werewolf.able.es> <1094172444l.17931l.1l@werewolf.able.es> In-Reply-To: <1094172444l.17931l.1l@werewolf.able.es> X-Enigmail-Version: 0.85.0.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 746 Lines: 34 J.A. Magallon wrote: > > On 2004.09.03, J.A. Magallon wrote: > >> Hi all... >> >> I am buildin an array with a linux box, and I run 2.6.8.1 (not stock, >> but >> the mandrake cooker version). >> >> Problem is that i get really poor performance. > Try: blockdev --getra /dev/sda1 blockdev --getra /dev/md0 and if needed: blockdev --setra 4096 /dev/sda1 blockdev --setra 4096 /dev/md0 Also if you use lvm: blockdev --setra 4096 /dev/video_vg/video_lv as appropriate. Tune as needed :) David - 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/