From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264639AbUGSLUu (ORCPT ); Mon, 19 Jul 2004 07:20:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265002AbUGSLUu (ORCPT ); Mon, 19 Jul 2004 07:20:50 -0400 Received: from outpost.ds9a.nl ([213.244.168.210]:38302 "EHLO outpost.ds9a.nl") by vger.kernel.org with ESMTP id S264639AbUGSLUs (ORCPT ); Mon, 19 Jul 2004 07:20:48 -0400 Date: Mon, 19 Jul 2004 13:20:47 +0200 From: bert hubert To: Klaus Dittrich Cc: linux mailing-list , gilbertd@treblig.org, nickpiggin@yahoo.com.au Subject: dentry cache leak? Re: rsync out of memory 2.6.8-rc2 Message-ID: <20040719112047.GA14784@outpost.ds9a.nl> Mail-Followup-To: bert hubert , Klaus Dittrich , linux mailing-list , gilbertd@treblig.org, nickpiggin@yahoo.com.au References: <20040719091943.GA866@xeon2.local.here> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040719091943.GA866@xeon2.local.here> User-Agent: Mutt/1.3.28i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jul 19, 2004 at 11:19:43AM +0200, Klaus Dittrich wrote: > I found out I could trigger the memory outage using du -s /disc1 too. Including crashing and/or running out of swap? That would indicate that the dentry cache is not cleaning itself up, or that something is wrong with reference counting. Can you run 'cat fs/dentry-state' before and after the du -s? (assuming there is an 'after'. Also, which fs is /disc1 on? any messages in dmesg? dentry-state ------------ Status of the directory cache. Since directory entries are dynamically allocated and deallocated, this file indicates the current status. It holds six values, in which the last two are not used and are always zero. The others are listed in table 2-1. Table 2-1: Status files of the directory cache .............................................................................. File Content nr_dentry Almost always zero nr_unused Number of unused cache entries age_limit in seconds after the entry may be reclaimed, when memory is short want_pages internally -- http://www.PowerDNS.com Open source, database driven DNS Software http://lartc.org Linux Advanced Routing & Traffic Control HOWTO