From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yw0-f197.google.com (mail-yw0-f197.google.com [209.85.161.197]) by kanga.kvack.org (Postfix) with ESMTP id 97FFA6B0005 for ; Thu, 14 Jul 2016 13:07:56 -0400 (EDT) Received: by mail-yw0-f197.google.com with SMTP id c124so58149364ywd.1 for ; Thu, 14 Jul 2016 10:07:56 -0700 (PDT) Received: from mx1.redhat.com (mx1.redhat.com. [209.132.183.28]) by mx.google.com with ESMTPS id t10si1571595ywa.244.2016.07.14.10.07.55 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 14 Jul 2016 10:07:55 -0700 (PDT) Subject: Re: System freezes after OOM References: <57837CEE.1010609@redhat.com> <9be09452-de7f-d8be-fd5d-4a80d1cd1ba3@redhat.com> <20160712064905.GA14586@dhcp22.suse.cz> <20160713111006.GF28723@dhcp22.suse.cz> <20160714125129.GA12289@dhcp22.suse.cz> <740b17f0-e1bb-b021-e9e1-ad6dcf5f033a@redhat.com> <20160714153120.GD12289@dhcp22.suse.cz> From: Ondrej Kozina Message-ID: <9ca3459a-8226-b870-163e-58e2bb10df74@redhat.com> Date: Thu, 14 Jul 2016 19:07:52 +0200 MIME-Version: 1.0 In-Reply-To: <20160714153120.GD12289@dhcp22.suse.cz> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: Mikulas Patocka , Jerome Marchand , Stanislav Kozina , linux-mm@kvack.org, linux-kernel@vger.kernel.org, dm-devel@redhat.com On 07/14/2016 05:31 PM, Michal Hocko wrote: > On Thu 14-07-16 16:08:28, Ondrej Kozina wrote: > [...] >> As Mikulas pointed out, this doesn't work. The system froze as well with the >> patch above. Will try to tweak the patch with Mikulas's suggestion... > > Thank you for testing! Do you happen to have traces of the frozen > processes? Does the flusher still gets throttled because the bias it > gets is not sufficient. Or does it get throttled at a different place? > Sure. Here it is (including sysrq+t and sysrq+w output): https://okozina.fedorapeople.org/bugs/swap_on_dmcrypt/4.7.0-rc7+/1/4.7.0-rc7+.log In a directory with the log there's also a patch the kernel was compiled with. Ondra -- 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