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Date: Fri, 29 Apr 2016 16:59:37 +0800
From: Aaron Lu <aaron.lu@intel.com>
Subject: Re: [LKP] [lkp] [mm, oom] faad2185f4: vm-scalability.throughput
 -11.8% regression
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To: Michal Hocko <mhocko@kernel.org>
Cc: "Huang, Ying" <ying.huang@intel.com>, kernel test robot <xiaolong.ye@intel.com>, Stephen Rothwell <sfr@canb.auug.org.au>, Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>, Hillf Danton <hillf.zj@alibaba-inc.com>, LKML <linux-kernel@vger.kernel.org>, Johannes Weiner <hannes@cmpxchg.org>, Mel Gorman <mgorman@suse.de>, David Rientjes <rientjes@google.com>, Andrew Morton <akpm@linux-foundation.org>, lkp@01.org, KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>, linux-mm@kvack.org

On Thu, Apr 28, 2016 at 01:21:35PM +0200, Michal Hocko wrote:
> All of them are order-2 and this was a known problem for "mm, oom:
> rework oom detection" commit and later should make it much more
> resistant to failures for higher (!costly) orders. So I would definitely
> encourage you to retest with the current _complete_ mmotm tree.

OK, will run the test on this branch:
https://git.kernel.org/pub/scm/linux/kernel/git/mhocko/mm.git since-4.5
with head commit:
commit 81cc2e6f1e8bd81ebc7564a3cd3797844ee1712e
Author: Michal Hocko <mhocko@suse.com>
Date:   Thu Apr 28 12:03:24 2016 +0200

    drm/amdgpu: make amdgpu_mn_get wait for mmap_sem killable

Please let me know if this isn't right.

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