From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Scobie Subject: Re: slow raid5 performance Date: Tue, 23 Oct 2007 08:23:09 +1300 Message-ID: <471CF89D.6020104@sauce.co.nz> References: <352991.69437.qm@web52803.mail.re2.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <352991.69437.qm@web52803.mail.re2.yahoo.com> Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Peter wrote: > Thanks Justin, good to hear about some real world experience. Hi Peter, I recently built a 3 drive RAID5 using the onboard SATA controllers on an MCP55 based board and get around 115MB/s write and 141MB/s read. A fourth drive was added some time later and after growing the array and filesystem (XFS), saw 160MB/s write and 178MB/s read, with the array 60% full. Regards, Richard