From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2992665AbXCBRfx (ORCPT ); Fri, 2 Mar 2007 12:35:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S2992670AbXCBRfx (ORCPT ); Fri, 2 Mar 2007 12:35:53 -0500 Received: from smtp.osdl.org ([65.172.181.24]:35582 "EHLO smtp.osdl.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2992665AbXCBRfv (ORCPT ); Fri, 2 Mar 2007 12:35:51 -0500 Date: Fri, 2 Mar 2007 09:35:01 -0800 From: Andrew Morton To: Christoph Lameter Cc: Rik van Riel , Mel Gorman , npiggin@suse.de, 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 Subject: Re: The performance and behaviour of the anti-fragmentation related patches Message-Id: <20070302093501.34c6ef2a.akpm@linux-foundation.org> In-Reply-To: References: <20070301101249.GA29351@skynet.ie> <20070301160915.6da876c5.akpm@linux-foundation.org> <45E842F6.5010105@redhat.com> <20070302085838.bcf9099e.akpm@linux-foundation.org> X-Mailer: Sylpheed version 2.2.7 (GTK+ 2.8.17; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2 Mar 2007 09:23:49 -0800 (PST) Christoph Lameter wrote: > On Fri, 2 Mar 2007, Andrew Morton wrote: > > > > Linux is *not* happy on 256GB systems. Even on some 32GB systems > > > the swappiness setting *needs* to be tweaked before Linux will even > > > run in a reasonable way. > > > > Please send testcases. > > It is not happy if you put 256GB into one zone. Oh come on. What's the workload? What happens? system time? user time? kernel profiles?