From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755339AbXD3PGK (ORCPT ); Mon, 30 Apr 2007 11:06:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755340AbXD3PGJ (ORCPT ); Mon, 30 Apr 2007 11:06:09 -0400 Received: from atlrel9.hp.com ([156.153.255.214]:36134 "EHLO atlrel9.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755339AbXD3PGG (ORCPT ); Mon, 30 Apr 2007 11:06:06 -0400 Subject: Re: [PATCH] change global zonelist order on NUMA v2 From: Lee Schermerhorn To: Christoph Lameter Cc: KAMEZAWA Hiroyuki , ak@suse.de, linux-kernel@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org In-Reply-To: References: <20070426183417.058f6f9e.kamezawa.hiroyu@jp.fujitsu.com> <200704261147.44413.ak@suse.de> <20070426191043.df96c114.kamezawa.hiroyu@jp.fujitsu.com> <20070427092736.d0626a30.kamezawa.hiroyu@jp.fujitsu.com> Content-Type: text/plain Organization: HP/OSLO Date: Mon, 30 Apr 2007 11:03:06 -0400 Message-Id: <1177945387.5623.21.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.6.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2007-04-26 at 18:25 -0700, Christoph Lameter wrote: > On Fri, 27 Apr 2007, KAMEZAWA Hiroyuki wrote: > > > > DMA memory. > > > > > It seems a bit complicated. If we do so, following can occur, > > > > Node1: cpu0,1,2,3 > > Node0: cpu4,5,6,7 > > We were discussing a two node NUMA system. If you have more put it onto > the last. Doesn't this [renumbering nodes] just move the problem to that "last" node? I.e., when one attempts to allocate normal memory from the last node, it will overflow to the DMA zone. What we need is for and DMA[32] zone[s] to be last in [or excluded from?] the Normal/Movable/High/... zonelist for each node. That is what Kame's patch does. Lee