From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267532AbUHTARU (ORCPT ); Thu, 19 Aug 2004 20:17:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267538AbUHTARU (ORCPT ); Thu, 19 Aug 2004 20:17:20 -0400 Received: from omx2-ext.sgi.com ([192.48.171.19]:11451 "EHLO omx2.sgi.com") by vger.kernel.org with ESMTP id S267532AbUHTARS (ORCPT ); Thu, 19 Aug 2004 20:17:18 -0400 From: Jesse Barnes To: paulmck@us.ibm.com Subject: Re: kernbench on 512p Date: Thu, 19 Aug 2004 20:16:10 -0400 User-Agent: KMail/1.6.2 Cc: "Martin J. Bligh" , hawkes@sgi.com, linux-kernel@vger.kernel.org, wli@holomorphy.com References: <200408191216.33667.jbarnes@engr.sgi.com> <200408191724.04422.jbarnes@engr.sgi.com> <20040819233837.GA2723@us.ibm.com> In-Reply-To: <20040819233837.GA2723@us.ibm.com> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200408192016.10064.jbarnes@engr.sgi.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thursday, August 19, 2004 7:38 pm, Paul E. McKenney wrote: > > 41.4% 58.6% 0% rcu_state > > 61.3% 38.7% 0% __rcu_process_callbacks+0x260 > > 41.4% 58.6% 0% rcu_check_quiescent_state+0xf0 > > > > So it looks like the dcache lock is the biggest problem on this system > > with this load. And although the rcu stuff has improved tremendously for > > this system, it's still highly contended. > > Was this run using all of Manfred's RCU patches? If not, it would be > interesting to see what you get with full RCU_HUGE patchset. So that stuff isn't in 2.6.8.1-mm1? What I tested was pretty close to a stock version of that tree. Where can I grab a version of that patchset that applies to a recent kernel? Thanks, Jesse