From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751667AbcERHQ5 (ORCPT ); Wed, 18 May 2016 03:16:57 -0400 Received: from mail-wm0-f65.google.com ([74.125.82.65]:33461 "EHLO mail-wm0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750760AbcERHQ4 (ORCPT ); Wed, 18 May 2016 03:16:56 -0400 Date: Wed, 18 May 2016 09:16:53 +0200 From: Michal Hocko To: Andrew Morton Cc: Oleg Nesterov , David Rientjes , linux-mm@kvack.org, LKML , Joonsoo Kim Subject: Re: [PATCH] oom: consider multi-threaded tasks in task_will_free_mem Message-ID: <20160518071653.GA21654@dhcp22.suse.cz> References: <1460452756-15491-1-git-send-email-mhocko@kernel.org> <20160426135752.GC20813@dhcp22.suse.cz> <20160517202856.GF12220@dhcp22.suse.cz> <20160517152139.fbda59b7c66e8470575050e8@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160517152139.fbda59b7c66e8470575050e8@linux-foundation.org> User-Agent: Mutt/1.6.0 (2016-04-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue 17-05-16 15:21:39, Andrew Morton wrote: > On Tue, 17 May 2016 22:28:56 +0200 Michal Hocko wrote: > > > Andrew, this is not in the mmotm tree now because I didn't feel really > > confortable with the patch without Oleg seeing it. But it seems Oleg is > > ok [1] with it so could you push it to Linus along with the rest of oom > > pile please? > > Reluctant. The CONFIG_COMPACTION=n regression which Joonsoo identified > is quite severe. Before patch: 10000 forks succeed. After patch: 500 > forks fail. Ouch. > > How can we merge such a thing? That regression has been fixed by http://lkml.kernel.org/r/1463051677-29418-3-git-send-email-mhocko@kernel.org -- Michal Hocko SUSE Labs From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-f71.google.com (mail-lf0-f71.google.com [209.85.215.71]) by kanga.kvack.org (Postfix) with ESMTP id 68B206B025E for ; Wed, 18 May 2016 03:16:56 -0400 (EDT) Received: by mail-lf0-f71.google.com with SMTP id j8so20347132lfd.0 for ; Wed, 18 May 2016 00:16:56 -0700 (PDT) Received: from mail-wm0-f65.google.com (mail-wm0-f65.google.com. [74.125.82.65]) by mx.google.com with ESMTPS id qn6si8578378wjc.143.2016.05.18.00.16.55 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 18 May 2016 00:16:55 -0700 (PDT) Received: by mail-wm0-f65.google.com with SMTP id n129so10399005wmn.1 for ; Wed, 18 May 2016 00:16:55 -0700 (PDT) Date: Wed, 18 May 2016 09:16:53 +0200 From: Michal Hocko Subject: Re: [PATCH] oom: consider multi-threaded tasks in task_will_free_mem Message-ID: <20160518071653.GA21654@dhcp22.suse.cz> References: <1460452756-15491-1-git-send-email-mhocko@kernel.org> <20160426135752.GC20813@dhcp22.suse.cz> <20160517202856.GF12220@dhcp22.suse.cz> <20160517152139.fbda59b7c66e8470575050e8@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160517152139.fbda59b7c66e8470575050e8@linux-foundation.org> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Oleg Nesterov , David Rientjes , linux-mm@kvack.org, LKML , Joonsoo Kim On Tue 17-05-16 15:21:39, Andrew Morton wrote: > On Tue, 17 May 2016 22:28:56 +0200 Michal Hocko wrote: > > > Andrew, this is not in the mmotm tree now because I didn't feel really > > confortable with the patch without Oleg seeing it. But it seems Oleg is > > ok [1] with it so could you push it to Linus along with the rest of oom > > pile please? > > Reluctant. The CONFIG_COMPACTION=n regression which Joonsoo identified > is quite severe. Before patch: 10000 forks succeed. After patch: 500 > forks fail. Ouch. > > How can we merge such a thing? That regression has been fixed by http://lkml.kernel.org/r/1463051677-29418-3-git-send-email-mhocko@kernel.org -- Michal Hocko SUSE Labs -- 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