From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751716AbWIGLbf (ORCPT ); Thu, 7 Sep 2006 07:31:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751724AbWIGLbf (ORCPT ); Thu, 7 Sep 2006 07:31:35 -0400 Received: from vms046pub.verizon.net ([206.46.252.46]:52449 "EHLO vms046pub.verizon.net") by vger.kernel.org with ESMTP id S1751713AbWIGLbe (ORCPT ); Thu, 7 Sep 2006 07:31:34 -0400 Date: Thu, 07 Sep 2006 07:31:19 -0400 From: Gene Heskett Subject: Re: [2.6.18-rc6] ext3 memory leak In-reply-to: To: linux-kernel@vger.kernel.org Message-id: <200609070731.19124.gene.heskett@verizon.net> Organization: Organization? Absolutely zip. MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Content-disposition: inline References: User-Agent: KMail/1.7 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thursday 07 September 2006 07:10, Guennadi Liakhovetski wrote: >Hi all, > >this looks like a serious problem to be fixed before 2.6.18 final and >backported to 2.6.17.*. Or a case of me misunderstanding something, in >which case, please, let me know. > >I've reported before in thread "[2.6.17.4] slabinfo.buffer_head > increases" a memory leak in ext3. Today I verified it is still present > in 2.6.18-rc6. > >A short description: as long as write accesses are made on an ext3 >filesystem /proc/slabinfo buffer_head increases unboundedly. This >behaviour is not observed with another journalling filesystems (e.g., >reiserfs), or if ext3 is mounted as ext2. > What would you call the 'get excited' level? Here, with about 12 hours of uptime (I had an unlogged machine shutdown while I was offsite yesterday), I'm showing buffer_head 67158 67158 48 78 1 : tunables 120 60 0 : slabdata 861 861 0 There are other entries that are larger here. However I do note that its growing on a per cycle basis as fetchmail is doing its thing every 90 seconds. Now its buffer_head 67672 67704 48 78 1 : tunables 120 60 0 : slabdata 868 868 0 So perhaps thats why it did the shutdown? With absolutely zip in the logs? Although, my firewall box was also reset/rebooted about the same time as this ones powerdown according to an uptime report on it just now, so my ups must not be doing its thing correctly. >As it seems serious enough to me I'm sending it to ext3 maintainers. > >Thanks >Guennadi >--------------------------------- >Guennadi Liakhovetski, Ph.D. >DSA Daten- und Systemtechnik GmbH >Pascalstr. 28 >D-52076 Aachen >Germany >- >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/ -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Yahoo.com and AOL/TW attorneys please note, additions to the above message by Gene Heskett are: Copyright 2006 by Maurice Eugene Heskett, all rights reserved.