Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750789AbVKAN5P (ORCPT ); Tue, 1 Nov 2005 08:57:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750794AbVKAN5P (ORCPT ); Tue, 1 Nov 2005 08:57:15 -0500 Received: from mx3.mail.elte.hu ([157.181.1.138]:36272 "EHLO mx3.mail.elte.hu") by vger.kernel.org with ESMTP id S1750789AbVKAN5P (ORCPT ); Tue, 1 Nov 2005 08:57:15 -0500 Date: Tue, 1 Nov 2005 14:56:51 +0100 From: Ingo Molnar To: Mel Gorman Cc: Nick Piggin , "Martin J. Bligh" , Andrew Morton , kravetz@us.ibm.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, lhms-devel@lists.sourceforge.net Subject: Re: [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19 Message-ID: <20051101135651.GA8502@elte.hu> References: <20051030235440.6938a0e9.akpm@osdl.org> <27700000.1130769270@[10.10.2.4]> <4366A8D1.7020507@yahoo.com.au> <4366C559.5090504@yahoo.com.au> <4366D469.2010202@yahoo.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i X-ELTE-SpamScore: 0.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=0.0 required=5.9 tests=AWL autolearn=disabled SpamAssassin version=3.0.3 0.0 AWL AWL: From: address is in the auto white-list X-ELTE-VirusStatus: clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1186 Lines: 26 * Mel Gorman wrote: > The set of patches do fix a lot and make a strong start at addressing > the fragmentation problem, just not 100% of the way. [...] do you have an expectation to be able to solve the 'fragmentation problem', all the time, in a 100% way, now or in the future? > So, with this set of patches, how fragmented you get is dependant on > the workload and it may still break down and high order allocations > will fail. But the current situation is that it will defiantly break > down. The fact is that it has been reported that memory hotplug remove > works with these patches and doesn't without them. Granted, this is > just one feature on a high-end machine, but it is one solid operation > we can perform with the patches and cannot without them. [...] can you always, under any circumstance hot unplug RAM with these patches applied? If not, do you have any expectation to reach 100%? Ingo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/