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From: "Huang\, Ying" <ying.huang@intel.com>
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>
Subject: Re: [LKP] [lkp] [mm, oom] faad2185f4: vm-scalability.throughput -11.8% regression
References: <20160427031556.GD29014@yexl-desktop>
	<20160427073617.GA2179@dhcp22.suse.cz>
	<87fuu7iht0.fsf@yhuang-dev.intel.com>
	<20160427083733.GE2179@dhcp22.suse.cz>
Date: Wed, 27 Apr 2016 16:44:31 +0800
In-Reply-To: <20160427083733.GE2179@dhcp22.suse.cz> (Michal Hocko's message of
	"Wed, 27 Apr 2016 10:37:34 +0200")
Message-ID: <87bn4vigpc.fsf@yhuang-dev.intel.com>
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Michal Hocko <mhocko@kernel.org> writes:

> On Wed 27-04-16 16:20:43, Huang, Ying wrote:
>> Michal Hocko <mhocko@kernel.org> writes:
>> 
>> > On Wed 27-04-16 11:15:56, kernel test robot wrote:
>> >> FYI, we noticed vm-scalability.throughput -11.8% regression with the following commit:
>> >
>> > Could you be more specific what the test does please?
>> 
>> The sub-testcase of vm-scalability is swap-w-rand.  An RAM emulated pmem
>> device is used as a swap device, and a test program will allocate/write
>> anonymous memory randomly to exercise page allocation, reclaiming, and
>> swapping in code path.
>
> Can I download the test with the setup to play with this?

There are reproduce steps in the original report email.

To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml


The job.yaml and kconfig file are attached in the original report email.

Best Regards,
Huang, Ying