From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264023AbTDOBMZ (for ); Mon, 14 Apr 2003 21:12:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264024AbTDOBMZ (for ); Mon, 14 Apr 2003 21:12:25 -0400 Received: from siaag2af.compuserve.com ([149.174.40.136]:35553 "EHLO siaag2af.compuserve.com") by vger.kernel.org with ESMTP id S264023AbTDOBMY (for ); Mon, 14 Apr 2003 21:12:24 -0400 Date: Mon, 14 Apr 2003 21:19:31 -0400 From: Chuck Ebbert <76306.1226@compuserve.com> Subject: Re: Benefits from computing physical IDE disk geometry? To: Nick Piggin Cc: linux-kernel Message-ID: <200304142122_MC3-1-346E-A549@compuserve.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > If RAID1 can use the generic elevator then it should. I > guess it can't though. No, but it is feeding IO requests into the elevators of the block devices below it. For a given read, all it wants to do is pick one device to handle the work. If it could look into the queues maybe it could make better decisions. -- Chuck