From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f171.google.com (mail-pd0-f171.google.com [209.85.192.171]) by kanga.kvack.org (Postfix) with ESMTP id 972286B00A1 for ; Wed, 13 Nov 2013 08:19:28 -0500 (EST) Received: by mail-pd0-f171.google.com with SMTP id z10so400264pdj.2 for ; Wed, 13 Nov 2013 05:19:28 -0800 (PST) Received: from psmtp.com ([74.125.245.118]) by mx.google.com with SMTP id rz8si2783161pab.271.2013.11.13.05.19.25 for ; Wed, 13 Nov 2013 05:19:26 -0800 (PST) Received: by mail-la0-f45.google.com with SMTP id eh20so331707lab.18 for ; Wed, 13 Nov 2013 05:19:23 -0800 (PST) Date: Wed, 13 Nov 2013 17:19:21 +0400 From: Cyrill Gorcunov Subject: Re: Unnecessary mass OOM kills on Linux 3.11 virtualization host Message-ID: <20131113131921.GF2834@moon> References: <20131024224326.GA19654@alpha.arachsys.com> <20131025103946.GA30649@alpha.arachsys.com> <20131028082825.GA30504@alpha.arachsys.com> <52836002.5050901@elastichosts.com> <20131113120948.GE2834@moon> <52837216.1090100@elastichosts.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <52837216.1090100@elastichosts.com> Sender: owner-linux-mm@kvack.org List-ID: To: Alin Dobre Cc: linux-mm@kvack.org On Wed, Nov 13, 2013 at 12:35:34PM +0000, Alin Dobre wrote: > On 13/11/13 12:09, Cyrill Gorcunov wrote: > >On Wed, Nov 13, 2013 at 11:18:26AM +0000, Alin Dobre wrote: > >> > >>The above traces seem similar with the ones that were reported by > >>Dave couple of months ago in the LKML thread > >>https://lkml.org/lkml/2013/8/7/27. > >> > >>Any further thoughts on why this happens? > > > >Dave's report has been addressed in commit 6dec97dc9, which is > >in 3.11, also you're to have CONFIG_MEM_SOFT_DIRTY=y to trigger > >it in former case. > > Thanks a lot, Cyrill. That's a really good piece of information, we > must have missed it although it was clearly there. > > In the meantime, we will try to reproduce the problem and see if > this fix together with CONFIG_MEM_SOFT_DIRTY=y works for our OOM > kills also. Hi Alin, actually if your config has no CONFIG_MEM_SOFT_DIRTY=y then the fix won't help, it might be some different issue (Dave has been testing the kernel with soft-dirty option set). But of course I don't mind if you test the kernel with soft dirty option turned on. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org