From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 17 Jan 2006 21:40:03 -0600 From: Jack Steiner Subject: Re: Question: new bind_zonelist uses only one zone type Message-ID: <20060118034003.GA1300@sgi.com> References: <43CCAEEF.5000403@jp.fujitsu.com> <200601171529.53811.ak@suse.de> <43CD822C.6020105@jp.fujitsu.com> <200601180400.41448.ak@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200601180400.41448.ak@suse.de> Sender: owner-linux-mm@kvack.org Return-Path: To: Andi Kleen Cc: KAMEZAWA Hiroyuki , Christoph Lameter , linux-mm List-ID: On Wed, Jan 18, 2006 at 04:00:41AM +0100, Andi Kleen wrote: > On Wednesday 18 January 2006 00:47, KAMEZAWA Hiroyuki wrote: > > Andi Kleen wrote: > > > It was originally intended - back then either IA64 NUMA systems didn't > > > have a ZONE_DMA and on x86-64 it was only 16MB and for i386 NUMA > > > it was considered acceptable - and it made the code simpler and policies > > > use less memory. But is now considered a bug because of the introduction > > > of ZONE_DMA32 on x86-64 and I gather from your report your platform > > > has NUMA and a 4GB ZONE_DMA too? > > > > on ia64, 0-4G area is ZONE_DMA. > > On IA64/SN2 ZONE_DMA is empty and at least in the part SGI was the only > IA64 vendor actively interested in NUMA policy. > On the SN systems, ALL memory is in the DMA zone. The other zones are empty. I think this is SN-specific - other IA64 platforms may be different & have memory in multiple zones. -- Jack -- 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