From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 15 Jun 2007 07:31:25 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [RFC] memory unplug v5 [1/6] migration by kernel Message-Id: <20070615073125.f5e4d6e2.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <46718320.1010500@csn.ul.ie> References: <20070614155630.04f8170c.kamezawa.hiroyu@jp.fujitsu.com> <20070614155929.2be37edb.kamezawa.hiroyu@jp.fujitsu.com> <20070614161146.5415f493.kamezawa.hiroyu@jp.fujitsu.com> <20070614164128.42882f74.kamezawa.hiroyu@jp.fujitsu.com> <20070614172936.12b94ad7.kamezawa.hiroyu@jp.fujitsu.com> <20070615010217.62908da3.kamezawa.hiroyu@jp.fujitsu.com> <20070615011536.beaa79c1.kamezawa.hiroyu@jp.fujitsu.com> <46718320.1010500@csn.ul.ie> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Mel Gorman Cc: clameter@sgi.com, linux-mm@kvack.org, y-goto@jp.fujitsu.com, hugh@veritas.com List-ID: On Thu, 14 Jun 2007 19:04:16 +0100 Mel Gorman wrote: > >> That will retry the migration on the next pass. Add some concise comment > >> explaining the situation. This is general bug in page migration. > >> > > Ok, will do. thank you for your advice. > > > > I am currently testing what I believe your patches currently look like. > In combination with the isolate lru page fix patch, things are looking > better than they were. Previously I had seen some very bizarre errors > when migrating due to compaction of memory but I'm not seeing them now. > I hadn't been reporting because it was difficult to tell if migration > was at fault or what memory compaction was doing. > Thank you for reporting. I'm encouraged :) I'll post updated version later. -Kame -- 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