From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754051AbYLQMs5 (ORCPT ); Wed, 17 Dec 2008 07:48:57 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751577AbYLQMsq (ORCPT ); Wed, 17 Dec 2008 07:48:46 -0500 Received: from minas.ics.muni.cz ([147.251.4.40]:36902 "EHLO minas.ics.muni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751559AbYLQMsp (ORCPT ); Wed, 17 Dec 2008 07:48:45 -0500 Date: Wed, 17 Dec 2008 13:49:04 +0100 From: Lukas Hejtmanek To: Wu Fengguang Cc: "linux-kernel@vger.kernel.org" , Bill Davidsen Subject: Re: 2.6.28-rc8 big regression in VM Message-ID: <20081217124904.GG4480@ics.muni.cz> References: <20081212183810.GA4390@ics.muni.cz> <20081213012115.GA6250@localhost> <20081213095815.GA7143@ics.muni.cz> <20081215011645.GA9707@localhost> <20081215094409.GA4422@ics.muni.cz> <20081216045938.GA1000@localhost> <20081216195219.GA4480@ics.muni.cz> <20081217122726.GA21356@localhost> <20081217123307.GF4480@ics.muni.cz> <20081217124421.GA22317@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20081217124421.GA22317@localhost> X-echelon: NSA, CIA, CI5, MI5, FBI, KGB, BIS, Plutonium, Bin Laden, bomb User-Agent: Mutt/1.5.18 (2008-05-17) X-Muni-Spam-TestIP: 147.251.3.109 X-Muni-Envelope-From: xhejtman@anubis.ics.muni.cz X-Muni-Virus-Test: Clean X-Greylist: Sender succeeded SMTP AUTH authentication, not delayed by milter-greylist-3.0 (minas.ics.muni.cz [147.251.4.35]); Wed, 17 Dec 2008 13:48:40 +0100 (CET) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Dec 17, 2008 at 08:44:21PM +0800, Wu Fengguang wrote: > So the cache memory shrinks a lot. > > Maybe your 'free' command is reporting wrong numbers? > Or it's not a quite reproducible problem? it depends, I think that 100MB of caches which is not dropped is not quite OK. While using the system without reboots for a long time, 'undroppable' amount of caches rises until the system is unusable. -- Lukáš Hejtmánek