From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261367AbULHV27 (ORCPT ); Wed, 8 Dec 2004 16:28:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261370AbULHV2u (ORCPT ); Wed, 8 Dec 2004 16:28:50 -0500 Received: from adsl-63-197-226-105.dsl.snfc21.pacbell.net ([63.197.226.105]:53689 "EHLO cheetah.davemloft.net") by vger.kernel.org with ESMTP id S261367AbULHV2k (ORCPT ); Wed, 8 Dec 2004 16:28:40 -0500 Date: Wed, 8 Dec 2004 13:26:27 -0800 From: "David S. Miller" To: Christoph Lameter Cc: jbarnes@engr.sgi.com, nickpiggin@yahoo.com.au, jgarzik@pobox.com, torvalds@osdl.org, hugh@veritas.com, benh@kernel.crashing.org, linux-mm@kvack.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: Anticipatory prefaulting in the page fault handler V1 Message-Id: <20041208132627.1c73177e.davem@davemloft.net> In-Reply-To: References: <20041202101029.7fe8b303.cliffw@osdl.org> <200412080933.13396.jbarnes@engr.sgi.com> X-Mailer: Sylpheed version 1.0.0beta3 (GTK+ 1.2.10; sparc-unknown-linux-gnu) X-Face: "_;p5u5aPsO,_Vsx"^v-pEq09'CU4&Dc1$fQExov$62l60cgCc%FnIwD=.UF^a>?5'9Kn[;433QFVV9M..2eN.@4ZWPGbdi<=?[:T>y?SD(R*-3It"Vj:)"dP 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 On Wed, 8 Dec 2004 09:56:00 -0800 (PST) Christoph Lameter wrote: > A patch like this is important for applications that allocate and preset > large amounts of memory on startup. It will drastically reduce the startup > times. I see. Yet I noticed that while the patch makes system time decrease, for some reason the wall time is increasing with the patch applied. Why is that, or am I misreading your tables?