From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andi Kleen Subject: Re: [PATCH] change global zonelist order on NUMA v2 Date: Thu, 26 Apr 2007 11:47:44 +0200 References: <20070426183417.058f6f9e.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20070426183417.058f6f9e.kamezawa.hiroyu@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200704261147.44413.ak@suse.de> Sender: owner-linux-mm@kvack.org Return-Path: To: KAMEZAWA Hiroyuki Cc: LKML , Linux-MM , AKPM , Christoph Lameter List-ID: On Thursday 26 April 2007 11:34:17 KAMEZAWA Hiroyuki wrote: > > Changelog from V1 -> V2 > - sysctl name is changed to be relaxed_zone_order > - NORMAL->NORMAL->....->DMA->DMA->DMA order (new ordering) is now default. > NORMAL->DMA->NORMAL->DMA order (old ordering) is optional. > - addes boot opttion to set relaxed_zone_order. ia64 is supported now. > - Added documentation > > patch is against 2.6.21-rc7-mm2. tested on ia64 NUMA box. works well. IMHO the change should be default (without any options) unless someone can come up with a good reason why not. On x86-64 it should be definitely default. If there is a good reason on some architecture or machine a user option is also not a good idea, but instead it should be set automatically by that architecture or machine on boot. -Andi -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org