From mboxrd@z Thu Jan 1 00:00:00 1970 From: Max Waterman Subject: Re: md faster than h/w? Date: Mon, 16 Jan 2006 14:31:22 +0800 Message-ID: <43CB3DBA.405@fastmail.co.uk> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Mark Hahn wrote: > I've written a fairly > simple bandwidth-reporting tool: > http://www.sharcnet.ca/~hahn/iorate.c > > it prints incremental bandwidth, which I find helpful because it shows > recording zones, like this slightly odd Samsung: > http://www.sharcnet.ca/~hahn/sp0812c.png > Using iorate.c, I guess somewhat different numbers for the 2.6.15 kernel than for the 2.6.8 kernel - the 2.6.15 kernel starts off at 105MB/s and head down to 94MB/s, while 2.6.8 starts at 140MB/s and heads town to 128MB/s. That seems like a significant difference to me? What to do? Max.