From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 20 Sep 2002 04:07:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 20 Sep 2002 04:07:31 -0400 Received: from holomorphy.com ([66.224.33.161]:8327 "EHLO holomorphy") by vger.kernel.org with ESMTP id ; Fri, 20 Sep 2002 04:07:30 -0400 Date: Fri, 20 Sep 2002 01:06:28 -0700 From: William Lee Irwin III To: Maneesh Soni Cc: Andrew Morton , linux-kernel@vger.kernel.org, viro@math.psu.edu Subject: Re: 2.5.36-mm1 dbench 512 profiles Message-ID: <20020920080628.GK3530@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Maneesh Soni , Andrew Morton , linux-kernel@vger.kernel.org, viro@math.psu.edu References: <20020919223007.GP28202@holomorphy.com> <68630000.1032477517@w-hlinder> <3D8A5FE6.4C5DE189@digeo.com> <20020920000815.GC3530@holomorphy.com> <200209200747.g8K7la9B174532@northrelay01.pok.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Description: brief message Content-Disposition: inline In-Reply-To: <200209200747.g8K7la9B174532@northrelay01.pok.ibm.com> User-Agent: Mutt/1.3.25i Organization: The Domain of Holomorphy Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 20 Sep 2002 05:48:38 +0530, William Lee Irwin III wrote: >> As far as the dcache goes, I'll stick to observing and reporting. I'll >> rerun with dcache patches applied, though. On Fri, Sep 20, 2002 at 01:29:28PM +0530, Maneesh Soni wrote: > For a 32-way system fastwalk will perform badly from dcache_lock > point of view, basically due to increased lock hold time. > dcache_rcu-12 should reduce dcache_lock contention and hold time. The > patch uses RCU infrastructer patch and read_barrier_depends patch. > The patches are available in Read-Copy-Update section on lse site at > http://sourceforge.net/projects/lse ISTR Hubertus mentioning this at OLS, and it sounded like a problem to me. I'm doing some runs with this to see if it fixes the problem. Cheers, Bill