Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161051AbXAZRha (ORCPT ); Fri, 26 Jan 2007 12:37:30 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161063AbXAZRha (ORCPT ); Fri, 26 Jan 2007 12:37:30 -0500 Received: from calculon.skynet.ie ([193.1.99.88]:41513 "EHLO calculon.skynet.ie" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161051AbXAZRh3 (ORCPT ); Fri, 26 Jan 2007 12:37:29 -0500 Date: Fri, 26 Jan 2007 17:37:27 +0000 (GMT) From: Mel Gorman X-X-Sender: mel@skynet.skynet.ie To: Christoph Lameter Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/8] Allow huge page allocations to use GFP_HIGH_MOVABLE In-Reply-To: Message-ID: References: <20070125234458.28809.5412.sendpatchset@skynet.skynet.ie> <20070125234558.28809.21103.sendpatchset@skynet.skynet.ie> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1254 Lines: 34 On Fri, 26 Jan 2007, Christoph Lameter wrote: > On Fri, 26 Jan 2007, Mel Gorman wrote: > >>> What is the e1000 problem? Jumbo packet allocation via GFP_KERNEL? >> Yes. Potentially the anti-fragmentation patches could address this by >> clustering atomic allocations together as much as possible. > > GFP_ATOMIC allocs? Yes > Do you have a reference to the thread where this was > discussed? > It's come up a few times and the converation is always fairly similar although the thread http://lkml.org/lkml/2006/9/22/44 has interesting information on the topic. There has been no serious discussion on whether anti-fragmentation would help it or not. I think it would if atomic allocations were clustered together because then jumbo frame allocations would cluster together in the same MAX_ORDER blocks and tend to keep other allocations away. -- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab - 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/