Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161235AbWASPeM (ORCPT ); Thu, 19 Jan 2006 10:34:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161242AbWASPeM (ORCPT ); Thu, 19 Jan 2006 10:34:12 -0500 Received: from coriana6.CIS.McMaster.CA ([130.113.128.17]:55723 "EHLO coriana6.cis.mcmaster.ca") by vger.kernel.org with ESMTP id S1161235AbWASPeK (ORCPT ); Thu, 19 Jan 2006 10:34:10 -0500 Date: Thu, 19 Jan 2006 10:33:27 -0500 (EST) From: Mark Hahn X-X-Sender: hahn@coffee.psychology.mcmaster.ca To: Neil Brown Cc: Jan Engelhardt , "Lincoln Dale (ltd)" , Michael Tokarev , , , "Steinar H. Gunderson" Subject: RE: [PATCH 000 of 5] md: Introduction In-Reply-To: <17358.52476.290687.858954@cse.unsw.edu.au> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-PMX-Version-Mac: 4.7.1.128075, Antispam-Engine: 2.1.0.0, Antispam-Data: 2006.01.19.062605 X-PerlMx-Spam: Gauge=IIIIIII, Probability=7%, Report='__CT 0, __CT_TEXT_PLAIN 0, __HAS_MSGID 0, __MIME_TEXT_ONLY 0, __MIME_VERSION 0, __SANE_MSGID 0' X-Spam-Flag: NO Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 613 Lines: 15 > Use either for raid0 (I don't think dm has particular advantages > for md or md over dm). I measured this a few months ago, and was surprised to find that DM raid0 was very noticably slower than MD raid0. same machine, same disks/controller/kernel/settings/stripe-size. I didn't try to find out why, since I usually need redundancy... regards, mark hahn. - 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/