From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262163AbVC2C7w (ORCPT ); Mon, 28 Mar 2005 21:59:52 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262165AbVC2C7w (ORCPT ); Mon, 28 Mar 2005 21:59:52 -0500 Received: from mx1.redhat.com ([66.187.233.31]:31921 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S262163AbVC2C7p (ORCPT ); Mon, 28 Mar 2005 21:59:45 -0500 Date: Mon, 28 Mar 2005 21:59:32 -0500 From: Dave Jones To: "Chen, Kenneth W" Cc: axboe@suse.de, linux-kernel@vger.kernel.org Subject: Re: [patch] optimization: defer bio_vec deallocation Message-ID: <20050329025932.GC435@redhat.com> Mail-Followup-To: Dave Jones , "Chen, Kenneth W" , axboe@suse.de, linux-kernel@vger.kernel.org References: <200503290238.j2T2cQg25626@unix-os.sc.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200503290238.j2T2cQg25626@unix-os.sc.intel.com> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 28, 2005 at 06:38:23PM -0800, Chen, Kenneth W wrote: > We have measured that the following patch give measurable performance gain > for industry standard db benchmark. Comments? If you can't publish results from that certain benchmark due its stupid restrictions, could you also try running an alternative benchmark that you can show results from ? These nebulous claims of 'measurable gains' could mean anything. I'm assuming you see a substantial increase in throughput, but how much is it worth in exchange for complicating the code? Dave