From mboxrd@z Thu Jan 1 00:00:00 1970 From: Colonel Hell Subject: Re: Accelerating Linux software raid Date: Sat, 10 Sep 2005 01:35:17 -0700 Message-ID: <4ecc821305091001356c9ceb1c@mail.gmail.com> References: Reply-To: amritanshu@gmail.com Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Return-path: In-Reply-To: Content-Disposition: inline Sender: linux-raid-owner@vger.kernel.org To: dan.j.williams@gmail.com Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids Hi, Dan: >the md driver that allows it to take advantage of raid acceleration >hardware. I/O processors like the Intel IOP333 >(http://www.intel.com/design/iio/docs/iop333.htm) contain an xor >engine for raid5 and raid6 calculations, but currently the md driver >does not fully utilize these resources. does that mean offloading RAID to the IOP board or simply using the XOR engine in the IOP ? if you have some benchmarks which shows that under certain workload md is not IOlimited(due to excessive XOR computation) and then concluded that offloading XOR is a gud idea , then it must be :) ... I was going thru IOP manual myself and saw that they have a raid6 accelaretor too :) Let me know. -Johri.