Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751143AbWAYNKA (ORCPT ); Wed, 25 Jan 2006 08:10:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751157AbWAYNKA (ORCPT ); Wed, 25 Jan 2006 08:10:00 -0500 Received: from quechua.inka.de ([193.197.184.2]:8588 "EHLO mail.inka.de") by vger.kernel.org with ESMTP id S1751143AbWAYNKA (ORCPT ); Wed, 25 Jan 2006 08:10:00 -0500 From: be-news06@lina.inka.de (Bernd Eckenfels) To: linux-kernel@vger.kernel.org Subject: Re: io performance... Organization: Private Site running Debian GNU/Linux In-Reply-To: <9cfek33vwvo.fsf@nist.gov> X-Newsgroups: ka.lists.linux.kernel User-Agent: tin/1.7.8-20050315 ("Scalpay") (UNIX) (Linux/2.6.13.4 (i686)) Message-Id: Date: Wed, 25 Jan 2006 14:09:58 +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 630 Lines: 15 Ian Soboroff wrote: > simulation) and database accesses. These are random accesses, which > is the worst access pattern for RAID. Seek time in a RAID equals the > longest of all the drives in the RAID, rather than the average. Well, actually it equals to the shortest seek time and it distributes the seeks to multiple spindles (at least for raid1). Gruss Bernd - 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/