From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753073AbYE2MGh (ORCPT ); Thu, 29 May 2008 08:06:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751169AbYE2MG0 (ORCPT ); Thu, 29 May 2008 08:06:26 -0400 Received: from lucidpixels.com ([75.144.35.66]:43701 "EHLO lucidpixels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750768AbYE2MGZ (ORCPT ); Thu, 29 May 2008 08:06:25 -0400 Date: Thu, 29 May 2008 08:06:24 -0400 (EDT) From: Justin Piszcz To: Holger Kiehl cc: linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, xfs@oss.sgi.com Subject: Re: Performance Characteristics of All Linux RAIDs (mdadm/bonnie++) In-Reply-To: Message-ID: References: User-Agent: Alpine 1.10 (DEB 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 29 May 2008, Holger Kiehl wrote: > On Wed, 28 May 2008, Justin Piszcz wrote: > >> Hardware: >> >> Results: >> >> http://home.comcast.net/~jpiszcz/raid/20080528/raid-levels.html >> http://home.comcast.net/~jpiszcz/raid/20080528/raid-levels.txt >> > Why is the Sequential Output (Block) for raid6 165719 and for raid5 only > 86797? I would have thought that raid6 was always a bit slower in writting > due to having to write double amount of parity data. > > Holger > I will re-run the RAID5 test and also run the test on a single disk and update the results later. Justin.