From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Chinner Subject: Re: Fastest Chunk Size w/XFS For MD Software RAID = 1024k Date: Thu, 28 Jun 2007 15:08:37 +1000 Message-ID: <20070628050837.GG989688@sgi.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Justin Piszcz Cc: linux-raid@vger.kernel.org, xfs@oss.sgi.com, Alan Piszcz List-Id: linux-raid.ids On Wed, Jun 27, 2007 at 07:20:42PM -0400, Justin Piszcz wrote: > For drives with 16MB of cache (in this case, raptors). That's four (4) drives, right? If so, how do you get a block read rate of 578MB/s from 4 drives? That's 145MB/s per drive.... Cheers, Dave. -- Dave Chinner Principal Engineer SGI Australian Software Group