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 SMTP id 5814F6B005A for ; Thu, 9 Jul 2009 21:50:28 -0400 (EDT) Received: from m6.gw.fujitsu.co.jp ([10.0.50.76]) by fgwmail5.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id n6A2BRb4001021 for (envelope-from kosaki.motohiro@jp.fujitsu.com); Fri, 10 Jul 2009 11:11:27 +0900 Received: from smail (m6 [127.0.0.1]) by outgoing.m6.gw.fujitsu.co.jp (Postfix) with ESMTP id 3534845DE59 for ; Fri, 10 Jul 2009 11:11:27 +0900 (JST) Received: from s6.gw.fujitsu.co.jp (s6.gw.fujitsu.co.jp [10.0.50.96]) by m6.gw.fujitsu.co.jp (Postfix) with ESMTP id 102D945DE58 for ; Fri, 10 Jul 2009 11:11:27 +0900 (JST) Received: from s6.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s6.gw.fujitsu.co.jp (Postfix) with ESMTP id EB1871DB803A for ; Fri, 10 Jul 2009 11:11:26 +0900 (JST) Received: from m106.s.css.fujitsu.com (m106.s.css.fujitsu.com [10.249.87.106]) by s6.gw.fujitsu.co.jp (Postfix) with ESMTP id A290C1DB8040 for ; Fri, 10 Jul 2009 11:11:26 +0900 (JST) From: KOSAKI Motohiro Subject: Re: [PATCH 4/5] add isolate pages vmstat In-Reply-To: References: <20090709171247.23C6.A69D9226@jp.fujitsu.com> Message-Id: <20090710094934.17CA.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Date: Fri, 10 Jul 2009 11:11:25 +0900 (JST) Sender: owner-linux-mm@kvack.org To: Christoph Lameter Cc: kosaki.motohiro@jp.fujitsu.com, LKML , linux-mm , Andrew Morton , Wu Fengguang , David Rientjes , Rik van Riel , Hugh Dickins List-ID: > On Thu, 9 Jul 2009, KOSAKI Motohiro wrote: > > > Subject: [PATCH] add isolate pages vmstat > > > > If the system have plenty threads or processes, concurrent reclaim can > > isolate very much pages. > > Unfortunately, current /proc/meminfo and OOM log can't show it. > > " > If the system is running a heavy load of processes then concurrent reclaim > can isolate a large numbe of pages from the LRU. /proc/meminfo and the > output generated for an OOM do not show how many pages were isolated. > " > > > This patch provide the way of showing this information. > > " > This patch shows the information about isolated pages. > " > > > Page migration can also isolate a large number of pages from the LRU. But > the new counters are not used there. Correct. Will fix. Plus, current reclaim logic depend on the system have enough much pages on LRU. Maybe we don't only need to limit #-of-reclaimer, but also need to limit #-of-migrator. I think we can use similar logic. -- 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