linux-kernel - Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of RAM that should be free

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Message-ID: <20161122160629.uzt2u6m75ash4ved@merlins.org>
Date:   Tue, 22 Nov 2016 08:06:29 -0800
From:   Marc MERLIN <marc@...lins.org>
To:     Vlastimil Babka <vbabka@...e.cz>
Cc:     linux-mm@...ck.org, Michal Hocko <mhocko@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Joonsoo Kim <iamjoonsoo.kim@....com>, Tejun Heo <tj@...nel.org>
Subject: Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of
 RAM that should be free

On Mon, Nov 21, 2016 at 01:56:39PM -0800, Marc MERLIN wrote:
> On Mon, Nov 21, 2016 at 10:50:20PM +0100, Vlastimil Babka wrote:
> > > 4.9rc5 however seems to be doing better, and is still running after 18
> > > hours. However, I got a few page allocation failures as per below, but the
> > > system seems to recover.
> > > Vlastimil, do you want me to continue the copy on 4.9 (may take 3-5 days) 
> > > or is that good enough, and i should go back to 4.8.8 with that patch applied?
> > > https://marc.info/?l=linux-mm&m=147423605024993
> > 
> > Hi, I think it's enough for 4.9 for now and I would appreciate trying
> > 4.8 with that patch, yeah.
> 
> So the good news is that it's been running for almost 5H and so far so good.

And the better news is that the copy is still going strong, 4.4TB and
going. So 4.8.8 is fixed with that one single patch as far as I'm
concerned.

So thanks for that, looks good to me to merge.

Marc
-- 
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
                                      .... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/                         | PGP 1024R/763BE901