From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031280AbXDZPvw (ORCPT ); Thu, 26 Apr 2007 11:51:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1031283AbXDZPvw (ORCPT ); Thu, 26 Apr 2007 11:51:52 -0400 Received: from ns2.suse.de ([195.135.220.15]:42323 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1031280AbXDZPvv (ORCPT ); Thu, 26 Apr 2007 11:51:51 -0400 From: Andi Kleen Organization: SUSE Linux Products GmbH, Nuernberg, GF: Markus Rex, HRB 16746 (AG Nuernberg) To: Christoph Lameter Subject: Re: [PATCH] change global zonelist order on NUMA v2 Date: Thu, 26 Apr 2007 17:51:37 +0200 User-Agent: KMail/1.9.6 Cc: KAMEZAWA Hiroyuki , LKML , Linux-MM , AKPM References: <20070426183417.058f6f9e.kamezawa.hiroyu@jp.fujitsu.com> <200704261147.44413.ak@suse.de> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200704261751.37656.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thursday 26 April 2007 17:46:35 Christoph Lameter wrote: > > It is not a good idea if node 0 has both DMA and NORMAL memory and normal > memory is a small fraction of node memory. In that case lots of > allocations get redirected to node 1. Good point yes. On x86-64 you might even have ZONE_DMA on node 0/1 and NORMAL only on 3. I guess this needs to be detected somehow. -Andi