Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268529AbUILIBr (ORCPT ); Sun, 12 Sep 2004 04:01:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268530AbUILIBr (ORCPT ); Sun, 12 Sep 2004 04:01:47 -0400 Received: from e5.ny.us.ibm.com ([32.97.182.105]:59389 "EHLO e5.ny.us.ibm.com") by vger.kernel.org with ESMTP id S268529AbUILIAp (ORCPT ); Sun, 12 Sep 2004 04:00:45 -0400 Date: Sun, 12 Sep 2004 00:59:41 -0700 (PDT) From: Ram Pai X-X-Sender: ram@localhost.localdomain Reply-To: linuxram@us.ibm.com To: Mingming Cao cc: Stephen Tweedie , Andrew Morton , , , Ram Pai Subject: Re: [Patch 0/6]: Cleanup and rbtree for ext3 reservations in 2.6.9-rc1-mm4 In-Reply-To: <1094862886.1637.7078.camel@w-ming2.beaverton.ibm.com> Message-ID: Organization: IBM Linux Technology Center 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 Content-Length: 1107 Lines: 29 On 10 Sep 2004, Mingming Cao wrote: > On Tue, 2004-09-07 at 06:02, Stephen Tweedie wrote: > > The patches in the following set contain several cleanups for ext3 > > reservations, fix a reproducable SMP race, and turn the per-superblock > > linear list of reservations into an rbtree for better scaling. > > > These changes have been in rawhide for a couple of weeks, and have > > been undergoing testing both within Red Hat and at IBM. > > > > We have run several tests on this set of the reservation changes. We > compared the results w/o reservation, rbtree based reservation vs link > list based reservation. I have some more results at http://eaglet.rain.com/ram/seekwrite/seekwrite.html In summary reservation code performs better than non-reservation. There is no clear winner while comparing link-based reservation v/s rbtree reservation. RP - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/