From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263496AbTJVS3x (ORCPT ); Wed, 22 Oct 2003 14:29:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263498AbTJVS3x (ORCPT ); Wed, 22 Oct 2003 14:29:53 -0400 Received: from fw.osdl.org ([65.172.181.6]:30432 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S263496AbTJVS3v (ORCPT ); Wed, 22 Oct 2003 14:29:51 -0400 Date: Wed, 22 Oct 2003 11:30:28 -0700 From: Dave Olien To: Nick Piggin Cc: rwhron@earthlink.net, venom@sns.it, linux-kernel@vger.kernel.org, akpm@osdl.org, Mary Edie Meredith Subject: Re: [BENCHMARK] I/O regression after 2.6.0-test5 Message-ID: <20031022183028.GA10249@osdl.org> References: <20031021130501.GA4409@rushmore> <3F9653E6.4060209@cyberone.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3F9653E6.4060209@cyberone.com.au> User-Agent: Mutt/1.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Sorry, this patch didn't fix our performance problems. Mary just finished running dbt2 on test8 with your patch: NOTPM kernel scheduler 965 2.6.0-test8-np AS 1632 2.6.-test6-mm4 deadline This is an 8-way system with DAC960 and 12 LUNs, using raw devices. That's still quite a sizeable drop. On Wed, Oct 22, 2003 at 07:54:46PM +1000, Nick Piggin wrote: > > Could you please try the following patch against 2.6.0-test8. > Thanks. I'll have to come up with something more comprehensive > because this destroys find | xargs grep during other IO. It > looks like this might be the cause of a lot of AS's database > problems though. > > I'm working on something... >