From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265243AbUATAd2 (ORCPT ); Mon, 19 Jan 2004 19:33:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265173AbUATA13 (ORCPT ); Mon, 19 Jan 2004 19:27:29 -0500 Received: from fw.osdl.org ([65.172.181.6]:52180 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S265062AbUATAFy (ORCPT ); Mon, 19 Jan 2004 19:05:54 -0500 Message-Id: <200401200005.i0K05do05666@mail.osdl.org> Date: Mon, 19 Jan 2004 16:05:34 -0800 (PST) From: markw@osdl.org Subject: DBT-2 anticipatory scheduler and filesystem results with 2.6.1 To: piggin@cyberone.com.au cc: linux-kernel@vger.kernel.org MIME-Version: 1.0 Content-Type: TEXT/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi Nick, I ran some dbt-2 tests against 5 filesystems with 2.6.1-mm4 and 2.6.1. I see a degradation from 0 to 7% in throughput. In most cases there appears to be a significant difference in the i/o wait and user time (for PostgreSQL) between 2.6.1 and 2.6.1-mm4, where the i/o wait time is going up. Thought you might be interested in the results since there was a tuning patch in 2.6.1-mm3. I have links to more detailed results (readprofile) here: http://developer.osdl.org/markw/fs/project_results.html but here's a summary: % throughput change from 2.6.1 to 2.6.1-mm4 ext2 -5.9% ext3 -5.1% jfs -7.0% reiserfs -2.2% xfs -0.3% -- Mark Wong - - markw@osdl.org Open Source Development Lab Inc - A non-profit corporation 12725 SW Millikan Way - Suite 400 - Beaverton, OR 97005 (503) 626-2455 x 32 (office) (503) 626-2436 (fax) http://developer.osdl.org/markw/