linux-kernel - Re: [lkp] [mm, page_alloc] 43993977ba: +88% OOM possibility

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Message-ID: <20151029142440.GE23598@dhcp22.suse.cz>
Date:	Thu, 29 Oct 2015 15:24:40 +0100
From:	Michal Hocko <mhocko@...nel.org>
To:	kernel test robot <ying.huang@...ux.intel.com>
Cc:	Mel Gorman <mgorman@...hsingularity.net>, lkp@...org,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>,
	Vitaly Wool <vitalywool@...il.com>,
	David Rientjes <rientjes@...gle.com>,
	Christoph Lameter <cl@...ux.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Vlastimil Babka <vbabka@...e.cz>,
	Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: [lkp] [mm, page_alloc] 43993977ba: +88% OOM possibility

On Wed 28-10-15 13:36:02, kernel test robot wrote:
> FYI, we noticed the below changes on
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> commit 43993977baecd838d66ccabc7f682342fc6ff635 ("mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd")
> 
> We found the OOM possibility increased 88% in a virtual machine with 1G memory.

Could you provide dmesg output from this test?

Thanks!
-- 
Michal Hocko
SUSE Labs
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