Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261836AbVCLDrc (ORCPT ); Fri, 11 Mar 2005 22:47:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261841AbVCLDrc (ORCPT ); Fri, 11 Mar 2005 22:47:32 -0500 Received: from fire.osdl.org ([65.172.181.4]:4514 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S261836AbVCLDra (ORCPT ); Fri, 11 Mar 2005 22:47:30 -0500 Date: Fri, 11 Mar 2005 19:43:49 -0800 From: Andrew Morton To: Christoph Lameter Cc: linux-kernel@vger.kernel.org, linux-mm@vger.kernel.org, torvalds@osdl.org Subject: Re: [PATCH] Prefaulting Message-Id: <20050311194349.1e546d8c.akpm@osdl.org> In-Reply-To: References: <20050311172228.773cf03d.akpm@osdl.org> X-Mailer: Sylpheed version 0.9.7 (GTK+ 1.2.10; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1061 Lines: 29 Christoph Lameter wrote: > > There is even a slight performance win in the > uniprocessor case: > > w/o any patch: > > Mb Rep Thr CLine User System Wall flt/cpu/s fault/wsec > 200 3 1 1 0.01s 0.15s 0.01s846860.493 848882.424 > 200 3 1 1 0.01s 0.16s 0.01s827724.160 830841.482 > 200 3 1 1 0.00s 0.16s 0.01s827724.160 827364.176 > > w/prefault patch > > 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? - 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/