Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760184Ab1D0XQd (ORCPT ); Wed, 27 Apr 2011 19:16:33 -0400 Received: from mail-ww0-f44.google.com ([74.125.82.44]:48178 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757154Ab1D0XQb (ORCPT ); Wed, 27 Apr 2011 19:16:31 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=e1fUr2DGEx3DPl3OiHYOKcxrKqSKSNsWWXs5r1dbqiRgV1k9SXR9ubsdswPoMx9JRq AaygkunUSB18dIdZInQXcjuJsmqwB14l3JtUT6tFZgqLITDRvo5VWUz+BXXAK8dQak9B HZ6leon2lB/Jlb3fmIPIF7zWT/+KG7RACfL3M= MIME-Version: 1.0 In-Reply-To: <20110427102824.GI12436@dastard> References: <20110424234655.GC12436@dastard> <20110427022655.GE12436@dastard> <20110427102824.GI12436@dastard> Date: Thu, 28 Apr 2011 08:16:29 +0900 Message-ID: Subject: Re: 2.6.39-rc4+: oom-killer busy killing tasks From: Minchan Kim To: Dave Chinner Cc: Christian Kujau , LKML , xfs@oss.sgi.com Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1174 Lines: 27 On Wed, Apr 27, 2011 at 7:28 PM, Dave Chinner wrote: > On Wed, Apr 27, 2011 at 12:46:51AM -0700, Christian Kujau wrote: >> On Wed, 27 Apr 2011 at 12:26, Dave Chinner wrote: >> > What this shows is that VFS inode cache memory usage increases until >> > about the 550 sample mark before the VM starts to reclaim it with >> > extreme prejudice. At that point, I'd expect the XFS inode cache to >> > then shrink, and it doesn't. I've got no idea why the either the >> >> Do you remember any XFS changes past 2.6.38 that could be related to >> something like this? > > There's plenty of changes that coul dbe the cause - we've changed > the inode reclaim to run in the background out of a workqueue as > well as via the shrinker, so it could even be workqueue starvation > causing the the problem... RCU free starvation is another possibility? https://lkml.org/lkml/2011/4/25/124 -- Kind regards, Minchan Kim -- 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/