From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with ESMTP id B75F86B0169 for ; Wed, 27 Jul 2011 16:16:57 -0400 (EDT) Date: Wed, 27 Jul 2011 13:16:50 -0700 From: Andrew Morton Subject: Re: [PATCH v4 00/10] Prevent LRU churning Message-Id: <20110727131650.ad30a331.akpm@linux-foundation.org> In-Reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Minchan Kim Cc: linux-mm , LKML , Johannes Weiner , KAMEZAWA Hiroyuki , KOSAKI Motohiro , Mel Gorman , Rik van Riel , Michal Hocko , Andrea Arcangeli On Mon, 4 Jul 2011 23:04:33 +0900 Minchan Kim wrote: > Test result is following as. > > 1) Elapased time 10GB file decompressed. > Old inorder inorder + pagevec flush[10/10] > 01:47:50.88 01:43:16.16 01:40:27.18 > > 2) failure of inorder lru > For test, it isolated 375756 pages. Only 45875 pages(12%) are put backed to > out-of-order(ie, head of LRU) Others, 329963 pages(88%) are put backed to in-order > (ie, position of old page in LRU). I'm getting more and more worried about how complex MM is becoming and this patchset doesn't take us in a helpful direction :( But it's hard to argue with numbers like that. Please respin patches 6-10? -- 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 internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org