From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264799AbUETBGS (ORCPT ); Wed, 19 May 2004 21:06:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264818AbUETBGS (ORCPT ); Wed, 19 May 2004 21:06:18 -0400 Received: from [213.171.41.46] ([213.171.41.46]:28439 "EHLO kaamos.homelinux.net") by vger.kernel.org with ESMTP id S264799AbUETBGO (ORCPT ); Wed, 19 May 2004 21:06:14 -0400 From: Alexey Kopytov To: Ram Pai Subject: Re: Random file I/O regressions in 2.6 [patch+results] Date: Thu, 20 May 2004 05:06:02 +0400 User-Agent: KMail/1.6.2 Cc: Andrew Morton , nickpiggin@yahoo.com.au, peter@mysql.com, linux-kernel@vger.kernel.org, axboe@suse.de References: <200405022357.59415.alexeyk@mysql.com> <1084480888.22208.26.camel@dyn319386.beaverton.ibm.com> <1084815010.13559.3.camel@localhost.localdomain> In-Reply-To: <1084815010.13559.3.camel@localhost.localdomain> MIME-Version: 1.0 Content-Disposition: inline Organization: MySQL AB Content-Type: text/plain; charset="koi8-r" Content-Transfer-Encoding: 7bit Message-Id: <200405200506.03006.alexeyk@mysql.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ram Pai wrote: >Attached the cleaned up patch and the performance results of the patch. > >Overall Observation: > 1.Small improvement with iozone with the patch, and overall > much better performance than 2.4 > 2.Small/neglegible improvement with DSS workload. > 3.Negligible impact with sysbench, but results worser than > 2.4 kernels Ram, can you clarify the status of this patch please? I ran the same sysbench test on my hardware with patched 2.6.6 and got 122.2348s execution time, i.e. almost the same results as in the original tests. Is this patch an intermediate step to improve the sysbench workload on 2.6, or it just addresses another problem? -- Alexey Kopytov, Software Developer MySQL AB, www.mysql.com Are you MySQL certified? www.mysql.com/certification