Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262768AbVCPTfV (ORCPT ); Wed, 16 Mar 2005 14:35:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262769AbVCPTej (ORCPT ); Wed, 16 Mar 2005 14:34:39 -0500 Received: from omx2-ext.sgi.com ([192.48.171.19]:16330 "EHLO omx2.sgi.com") by vger.kernel.org with ESMTP id S262766AbVCPTbT (ORCPT ); Wed, 16 Mar 2005 14:31:19 -0500 Date: Wed, 16 Mar 2005 11:30:31 -0800 (PST) From: Christoph Lameter X-X-Sender: clameter@schroedinger.engr.sgi.com To: Andrew Morton cc: linux-kernel@vger.kernel.org, linux-mm@vger.kernel.org, torvalds@osdl.org Subject: Re: [PATCH] Prefaulting In-Reply-To: <20050311194349.1e546d8c.akpm@osdl.org> Message-ID: References: <20050311172228.773cf03d.akpm@osdl.org> <20050311194349.1e546d8c.akpm@osdl.org> 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: 2033 Lines: 46 On Fri, 11 Mar 2005, Andrew Morton wrote: > > 200 MB allocation > > > > Mb Rep Thr CLine User System Wall flt/cpu/s fault/wsec > > 200 3 1 1 0.02s 0.48s 0.05s860119.275 859918.989 > > 200 3 1 1 0.02s 0.46s 0.04s886129.730 886551.621 > > 200 3 1 1 0.01s 0.47s 0.04s887920.166 886855.775 > > But the system time went through the roof. Would that be accounting > inaccuracy? Redoing the test with 2.6.11.3-bk2 on AMD64(i386 mode) 1G Ram unpatched: Mb Rep Thr CLine User System Wall flt/cpu/s fault/wsec 200 3 1 1 0.00s 0.17s 0.01s844090.542 845814.978 200 3 1 1 0.00s 0.17s 0.01s853466.095 853376.002 200 3 1 1 0.00s 0.17s 0.01s853466.095 855138.626 200 3 1 1 0.00s 0.17s 0.01s848750.083 847934.815 200 3 1 1 0.00s 0.17s 0.01s848754.773 848248.554 200 3 1 1 0.00s 0.17s 0.01s844085.903 843914.312 200 3 1 1 0.01s 0.16s 0.01s848750.083 850573.694 200 3 1 1 0.00s 0.17s 0.01s844090.542 845451.843 prefault patch /proc/sys/vm/max_prealloc_order set to 4 Mb Rep Thr CLine User System Wall flt/cpu/s fault/wsec 200 3 1 1 0.00s 0.17s 0.01s848750.083 847902.050 200 3 1 1 0.00s 0.17s 0.01s853466.095 853565.693 200 3 1 1 0.00s 0.17s 0.01s848750.083 849595.115 200 3 1 1 0.00s 0.17s 0.01s848754.773 848628.162 200 3 1 1 0.00s 0.17s 0.01s844090.542 844554.657 200 3 1 1 0.00s 0.17s 0.01s848754.773 848590.654 200 3 1 1 0.00s 0.17s 0.01s848750.083 848792.295 200 3 1 1 0.00s 0.17s 0.01s844090.542 846406.904 Must have been something wrong with the test. - 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/