From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with ESMTP id C5A238D0002 for ; Wed, 17 Nov 2010 18:48:03 -0500 (EST) Date: Wed, 17 Nov 2010 15:46:41 -0800 From: Andrew Morton Subject: Re: [PATCH 0/8] Use memory compaction instead of lumpy reclaim during high-order allocations Message-Id: <20101117154641.51fd7ce5.akpm@linux-foundation.org> In-Reply-To: <1290010969-26721-1-git-send-email-mel@csn.ul.ie> References: <1290010969-26721-1-git-send-email-mel@csn.ul.ie> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Mel Gorman Cc: Andrea Arcangeli , KOSAKI Motohiro , Rik van Riel , Johannes Weiner , linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On Wed, 17 Nov 2010 16:22:41 +0000 Mel Gorman wrote: > Huge page allocations are not expected to be cheap but lumpy reclaim > is still very disruptive. Huge pages are boring. Can we expect any benefit for the stupid-nic-driver-which-does-order-4-GFP_ATOMIC-allocations problem? > > ... > > I haven't pushed hard on the concept of lumpy compaction yet and right > now I don't intend to during this cycle. The initial prototypes did not > behave as well as expected and this series improves the current situation > a lot without introducing new algorithms. Hence, I'd like this series to > be considered for merging. Translation: "Andrew, wait for the next version"? :) > I'm hoping that this series also removes the > necessity for the "delete lumpy reclaim" patch from the THP tree. Now I'm sad. I read all that and was thinking "oh goody, we get to delete something for once". But no :( If you can get this stuff to work nicely, why can't we remove lumpy reclaim? -- 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/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: email@kvack.org