From mboxrd@z Thu Jan 1 00:00:00 1970 From: Theodore Ts'o Subject: Re: fuzz testing a KVM machine (x86) with ext4fs forces much more often the oom killer than btrfs Date: Mon, 24 Nov 2014 22:15:12 -0500 Message-ID: <20141125031512.GE31339@thunk.org> References: <547390CC.2050306@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-ext4@vger.kernel.org To: Toralf =?iso-8859-1?Q?F=F6rster?= Return-path: Received: from imap.thunk.org ([74.207.234.97]:48995 "EHLO imap.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751216AbaKYDPQ (ORCPT ); Mon, 24 Nov 2014 22:15:16 -0500 Content-Disposition: inline In-Reply-To: <547390CC.2050306@gmx.de> Sender: linux-ext4-owner@vger.kernel.org List-ID: No idea; can you grab /proc/slabinfo and /proc/meminfo every minute or so until it oom kills trinity? Maybe that will give us a hint of at least where the memory is getting consumed. It could be the extent status tree cache, for which the need for a better shrinker is a known bug that we're working on, but that's just a wild guess. Thanks, - Ted