Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758368AbZGIHUm (ORCPT ); Thu, 9 Jul 2009 03:20:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757889AbZGIHUe (ORCPT ); Thu, 9 Jul 2009 03:20:34 -0400 Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]:60585 "EHLO fgwmail6.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755063AbZGIHUd (ORCPT ); Thu, 9 Jul 2009 03:20:33 -0400 X-SecurityPolicyCheck-FJ: OK by FujitsuOutboundMailChecker v1.3.1 From: KOSAKI Motohiro To: Christoph Lameter Subject: Re: [PATCH 5/5] add NR_ANON_PAGES to OOM log Cc: kosaki.motohiro@jp.fujitsu.com, Minchan Kim , Wu Fengguang , LKML , linux-mm , Andrew Morton , David Rientjes , Rik van Riel In-Reply-To: <20090709144938.23A8.A69D9226@jp.fujitsu.com> References: <20090709144938.23A8.A69D9226@jp.fujitsu.com> Message-Id: <20090709161712.23B0.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailer: Becky! ver. 2.50.07 [ja] Date: Thu, 9 Jul 2009 16:20:29 +0900 (JST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1076 Lines: 28 > > On Mon, 6 Jul 2009, Minchan Kim wrote: > > > > > Anyway, I think it's not a big cost in normal system. > > > So If you want to add new accounting, I don't have any objection. :) > > > > Lets keep the counters to a mininum. If we can calculate the values from > > something else then there is no justification for a new counter. > > > > A new counter increases the size of the per cpu structures that exist for > > each zone and each cpu. 1 byte gets multiplies by the number of cpus and > > that gets multiplied by the number of zones. > > OK. I'll implement this idea. Grr, sorry I cancel this opinion. Shem pages can't be calculated by minchan's formula. if those page are mlocked, the page move to unevictable lru. then this calculation don't account mlocked page. However mlocked tmpfs pages also make OOM issue. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/