From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752222Ab1GaQNM (ORCPT ); Sun, 31 Jul 2011 12:13:12 -0400 Received: from mail-fx0-f46.google.com ([209.85.161.46]:64822 "EHLO mail-fx0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752162Ab1GaQNH (ORCPT ); Sun, 31 Jul 2011 12:13:07 -0400 Date: Sun, 31 Jul 2011 19:12:59 +0300 (EEST) From: Pekka Enberg X-X-Sender: penberg@tiger To: Christoph Lameter cc: David Rientjes , Linus Torvalds , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [GIT PULL] SLAB changes for v3.1-rc0 In-Reply-To: Message-ID: References: User-Agent: Alpine 2.00 (DEB 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > On Thu, 28 Jul 2011, David Rientjes wrote: > >> On Thu, 28 Jul 2011, Pekka Enberg wrote: >> >>> Christoph, your debugging fix has been in linux-next for few days now >>> and no problem have been reported. I'm considering sending the series >>> to Linus. What do you think? >>> >> >> I ran slub/lockless through some stress testing and it seems to be quite >> stable on my testing cluster. There is about a 2.3% performance >> improvement with the lockless slowpath on the netperf benchmark with >> various thread counts on my 16-core 64GB Opterons, so I'd recommend it to >> be merged into 3.1. On Fri, 29 Jul 2011, Christoph Lameter wrote: > Great. Could you also test the next stage of patches (not yet even in > Pekka's tree) where we add a per cpu cache of partial allocated slab > pages? This decreases the per node lock contention further. I can repost > the set if the old one does not work for you. Shows significant > improvement here as well. They don't apply so please resend them. Pekka