From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with SMTP id 6ACB76B004D for ; Thu, 9 Jul 2009 16:24:01 -0400 (EDT) Received: from localhost (smtp.ultrahosting.com [127.0.0.1]) by smtp.ultrahosting.com (Postfix) with ESMTP id 31D7B82C508 for ; Thu, 9 Jul 2009 17:01:40 -0400 (EDT) Received: from smtp.ultrahosting.com ([74.213.175.254]) by localhost (smtp.ultrahosting.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id M3YSQtFKg4dk for ; Thu, 9 Jul 2009 17:01:40 -0400 (EDT) Received: from gentwo.org (unknown [74.213.171.31]) by smtp.ultrahosting.com (Postfix) with ESMTP id 65AF882C50A for ; Thu, 9 Jul 2009 17:01:35 -0400 (EDT) Date: Thu, 9 Jul 2009 16:43:02 -0400 (EDT) From: Christoph Lameter Subject: Re: [PATCH 4/5] add isolate pages vmstat In-Reply-To: <20090709171247.23C6.A69D9226@jp.fujitsu.com> Message-ID: References: <20090709165820.23B7.A69D9226@jp.fujitsu.com> <20090709171247.23C6.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: KOSAKI Motohiro Cc: 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. -- 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