From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 1 Mar 2007 20:29:17 -0800 From: Andrew Morton Subject: Re: The performance and behaviour of the anti-fragmentation related patches Message-Id: <20070301202917.7abe4ad8.akpm@linux-foundation.org> In-Reply-To: References: <20070301101249.GA29351@skynet.ie> <20070301160915.6da876c5.akpm@linux-foundation.org> <20070302035751.GA15867@wotan.suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: Nick Piggin , Mel Gorman , mingo@elte.hu, jschopp@austin.ibm.com, arjan@infradead.org, torvalds@linux-foundation.org, mbligh@mbligh.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On Thu, 1 Mar 2007 20:06:25 -0800 (PST) Christoph Lameter wrote: > No merge them to one thing and handle them as one. No difference between > zones and nodes anymore. Sorry, but this is crap. zones and nodes are distinct, physical concepts and you're kidding yourself if you think you can somehow fudge things to make one of them just go away. Think: ZONE_DMA32 on an Opteron machine. I don't think there is a sane way in which we can fudge away the distinction between bus-addresses-which-have-the-32-upper-bits-zero and memory-which-is-local-to-each-socket. No matter how hard those hands are waving. -- 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