From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
To: mhocko@kernel.org
Cc: david@fromorbit.com, dchinner@redhat.com, hch@lst.de,
mgorman@suse.de, viro@ZenIV.linux.org.uk, linux-mm@kvack.org,
hannes@cmpxchg.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH 1/2] mm, vmscan: account the number of isolated pages per zone
Date: Wed, 22 Feb 2017 11:02:21 +0900 [thread overview]
Message-ID: <201702221102.EHH69234.OQLOMFSOtJFVHF@I-love.SAKURA.ne.jp> (raw)
In-Reply-To: <20170221155337.GK15595@dhcp22.suse.cz>
Michal Hocko wrote:
> On Tue 21-02-17 23:35:07, Tetsuo Handa wrote:
> > Michal Hocko wrote:
> > > OK, so it seems that all the distractions are handled now and linux-next
> > > should provide a reasonable base for testing. You said you weren't able
> > > to reproduce the original long stalls on too_many_isolated(). I would be
> > > still interested to see those oom reports and potential anomalies in the
> > > isolated counts before I send the patch for inclusion so your further
> > > testing would be more than appreciated. Also stalls > 10s without any
> > > previous occurrences would be interesting.
> >
> > I confirmed that linux-next-20170221 with kmallocwd applied can reproduce
> > infinite too_many_isolated() loop problem. Please send your patches to linux-next.
>
> So I assume that you didn't see the lockup with the patch applied and
> the OOM killer has resolved the situation by killing other tasks, right?
> Can I assume your Tested-by?
No. I tested linux-next-20170221 which does not include your patch.
I didn't test linux-next-20170221 with your patch applied. Your patch will
avoid infinite too_many_isolated() loop problem in shrink_inactive_list().
But we need to test different workloads by other people. Thus, I suggest
you to send your patches to linux-next without my testing.
>
> Thanks for your testing!
> --
> Michal Hocko
> SUSE Labs
>
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next prev parent reply other threads:[~2017-02-22 2:04 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-18 13:44 [RFC PATCH 0/2] fix unbounded too_many_isolated Michal Hocko
2017-01-18 13:44 ` [RFC PATCH 1/2] mm, vmscan: account the number of isolated pages per zone Michal Hocko
2017-01-18 14:46 ` Mel Gorman
2017-01-18 15:15 ` Michal Hocko
2017-01-18 15:54 ` Mel Gorman
2017-01-18 16:17 ` Michal Hocko
2017-01-18 17:00 ` Mel Gorman
2017-01-18 17:29 ` Michal Hocko
2017-01-19 10:07 ` Mel Gorman
2017-01-19 11:23 ` Michal Hocko
2017-01-19 13:11 ` Mel Gorman
2017-01-20 13:27 ` Tetsuo Handa
2017-01-21 7:42 ` Tetsuo Handa
2017-01-25 10:15 ` Michal Hocko
2017-01-25 10:19 ` Christoph Hellwig
2017-01-25 10:46 ` Michal Hocko
2017-01-25 11:09 ` Tetsuo Handa
2017-01-25 13:00 ` Michal Hocko
2017-01-27 14:49 ` Michal Hocko
2017-01-28 15:27 ` Tetsuo Handa
2017-01-30 8:55 ` Michal Hocko
2017-02-02 10:14 ` Michal Hocko
2017-02-03 10:57 ` Tetsuo Handa
2017-02-03 14:41 ` Michal Hocko
2017-02-03 14:50 ` Michal Hocko
2017-02-03 17:24 ` Brian Foster
2017-02-06 6:29 ` Tetsuo Handa
2017-02-06 14:35 ` Brian Foster
2017-02-06 14:42 ` Michal Hocko
2017-02-06 15:47 ` Brian Foster
2017-02-07 10:30 ` Tetsuo Handa
2017-02-07 16:54 ` Brian Foster
2017-02-03 14:55 ` Michal Hocko
2017-02-05 10:43 ` Tetsuo Handa
2017-02-06 10:34 ` Michal Hocko
2017-02-06 10:39 ` Michal Hocko
2017-02-07 21:12 ` Michal Hocko
2017-02-08 9:24 ` Peter Zijlstra
2017-02-21 9:40 ` Michal Hocko
2017-02-21 14:35 ` Tetsuo Handa
2017-02-21 15:53 ` Michal Hocko
2017-02-22 2:02 ` Tetsuo Handa [this message]
2017-02-22 7:54 ` Michal Hocko
2017-02-26 6:30 ` Tetsuo Handa
2017-01-31 11:58 ` Michal Hocko
2017-01-31 12:51 ` Christoph Hellwig
2017-01-31 13:21 ` Michal Hocko
2017-01-25 10:33 ` [RFC PATCH 1/2] mm, vmscan: account the number of isolated pagesper zone Tetsuo Handa
2017-01-25 12:34 ` Michal Hocko
2017-01-25 13:13 ` [RFC PATCH 1/2] mm, vmscan: account the number of isolated pages per zone Tetsuo Handa
2017-01-25 9:53 ` Michal Hocko
2017-01-20 6:42 ` Hillf Danton
2017-01-20 9:25 ` Mel Gorman
2017-01-18 13:44 ` [RFC PATCH 2/2] mm, vmscan: do not loop on too_many_isolated for ever Michal Hocko
2017-01-18 14:50 ` Mel Gorman
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