From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with ESMTP id BAEE86B01E3 for ; Wed, 7 Apr 2010 11:42:28 -0400 (EDT) Date: Wed, 7 Apr 2010 16:42:06 +0100 From: Mel Gorman Subject: Re: [PATCH 10/14] Add /sys trigger for per-node memory compaction Message-ID: <20100407154206.GS17882@csn.ul.ie> References: <1270224168-14775-1-git-send-email-mel@csn.ul.ie> <1270224168-14775-11-git-send-email-mel@csn.ul.ie> <20100406170559.52093bd5.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <20100406170559.52093bd5.akpm@linux-foundation.org> Sender: owner-linux-mm@kvack.org To: Andrew Morton Cc: Andrea Arcangeli , Christoph Lameter , Adam Litke , Avi Kivity , David Rientjes , Minchan Kim , KAMEZAWA Hiroyuki , KOSAKI Motohiro , Rik van Riel , linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: On Tue, Apr 06, 2010 at 05:05:59PM -0700, Andrew Morton wrote: > On Fri, 2 Apr 2010 17:02:44 +0100 > Mel Gorman wrote: > > > This patch adds a per-node sysfs file called compact. When the file is > > written to, each zone in that node is compacted. The intention that this > > would be used by something like a job scheduler in a batch system before > > a job starts so that the job can allocate the maximum number of > > hugepages without significant start-up cost. > > Would it make more sense if this was a per-memcg thing rather than a > per-node thing? > Kamezawa Hiroyuki covered this perfectly. memcg doesn't care and while cpuset might, there are a lot more people working with nodes than there are with cpuset. -- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab -- 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