From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758808AbYD2OIn (ORCPT ); Tue, 29 Apr 2008 10:08:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751764AbYD2OIe (ORCPT ); Tue, 29 Apr 2008 10:08:34 -0400 Received: from smtp-out.google.com ([216.239.33.17]:29242 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750981AbYD2OId (ORCPT ); Tue, 29 Apr 2008 10:08:33 -0400 DomainKey-Signature: a=rsa-sha1; s=beta; d=google.com; c=nofws; q=dns; h=received:message-id:date:from:to:subject:cc:in-reply-to: mime-version:content-type:content-transfer-encoding: content-disposition:references; b=NKMlKncs8MU7Ethk0OsZohHGINgsBUqhyoAfRtQHwHmQ9SWmmEreRfnTkMPvrxdjs QoT8KCAHl1hModkwQUZ5Q== Message-ID: Date: Tue, 29 Apr 2008 10:08:18 -0400 From: "Ross Biro" To: "Hugh Dickins" Subject: Re: Page Faults slower in 2.6.25-rc9 than 2.6.23 Cc: linux-mm@kvack.org, lkml In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 29, 2008 at 9:57 AM, Hugh Dickins wrote: > Do you have CONFIG_CGROUP_MEM_RES_CTLR=y in 2.6.25? > That added about 20% to my lmbench "Page Fault" tests (with > adverse effect on several others e.g. the fork, exec, sh group). I don't have config cgroups set. I do have fake numa on, but I'm pretty sure it was on for 2.6.23 as well. # CONFIG_CGROUPS is not set CONFIG_GROUP_SCHED=y CONFIG_FAIR_GROUP_SCHED=y # CONFIG_RT_GROUP_SCHED is not set CONFIG_USER_SCHED=y # CONFIG_CGROUP_SCHED is not set C Ross