Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751022AbVJCPJO (ORCPT ); Mon, 3 Oct 2005 11:09:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751101AbVJCPJN (ORCPT ); Mon, 3 Oct 2005 11:09:13 -0400 Received: from dvhart.com ([64.146.134.43]:58770 "EHLO localhost.localdomain") by vger.kernel.org with ESMTP id S1751022AbVJCPI5 (ORCPT ); Mon, 3 Oct 2005 11:08:57 -0400 Date: Mon, 03 Oct 2005 08:08:59 -0700 From: "Martin J. Bligh" Reply-To: "Martin J. Bligh" To: David Lang Cc: Magnus Damm , Dave Hansen , Magnus Damm , linux-mm , Linux Kernel Mailing List Subject: Re: [PATCH 00/07][RFC] i386: NUMA emulation Message-ID: <83890000.1128352138@[10.10.2.4]> In-Reply-To: References: dlang@dlang.diginsite.com X-Mailer: Mulberry/2.2.1 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 897 Lines: 23 --David Lang wrote (on Monday, October 03, 2005 08:03:44 -0700): > On Mon, 3 Oct 2005, Martin J. Bligh wrote: > >> But that's not the same at all! ;-) PAE memory is the same speed as >> the other stuff. You just have a 3rd level of pagetables for everything. >> One could (correctly) argue it made *all* memory slower, but it does so >> in a uniform fashion. > > is it? I've seen during the memory self-test at boot that machines slow down noticably as they pass the 4G mark. Not noticed that, and I can't see why it should be the case in general, though I suppose some machines might be odd. Got any numbers? M. - 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/