linux-kernel - Re: [LKP] [lkp] [mm, oom] faad2185f4: vm-scalability.throughput -11.8% regression

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Message-ID: <20160427083733.GE2179@dhcp22.suse.cz>
Date:	Wed, 27 Apr 2016 10:37:34 +0200
From:	Michal Hocko <mhocko@...nel.org>
To:	"Huang, Ying" <ying.huang@...el.com>
Cc:	kernel test robot <xiaolong.ye@...el.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
	Hillf Danton <hillf.zj@...baba-inc.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Mel Gorman <mgorman@...e.de>,
	David Rientjes <rientjes@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>, lkp@...org,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [LKP] [lkp] [mm, oom] faad2185f4: vm-scalability.throughput
 -11.8% regression

On Wed 27-04-16 16:20:43, Huang, Ying wrote:
> Michal Hocko <mhocko@...nel.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?
-- 
Michal Hocko
SUSE Labs