From: Michal Hocko <mhocko@kernel.org>
To: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: mgorman@suse.de, 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, 25 Jan 2017 10:53:38 +0100 [thread overview]
Message-ID: <20170125095337.GF32377@dhcp22.suse.cz> (raw)
In-Reply-To: <201701202227.GCC13598.OHJMSQFVOtFOLF@I-love.SAKURA.ne.jp>
On Fri 20-01-17 22:27:27, Tetsuo Handa wrote:
> Mel Gorman wrote:
> > On Thu, Jan 19, 2017 at 12:23:36PM +0100, Michal Hocko wrote:
> > > So what do you think about the following? Tetsuo, would you be willing
> > > to run this patch through your torture testing please?
> >
> > I'm fine with treating this as a starting point.
>
> OK. So I tried to test this patch but I failed at preparation step.
> There are too many pending mm patches and I'm not sure which patch on
> which linux-next snapshot I should try.
The current linux-next should be good to test. It contains all patches
sitting in the mmotm tree. If you want a more stable base then you can
use mmotm git tree
(git://git.kernel.org/pub/scm/linux/kernel/git/mhocko/mm.git #since-4.9
or its #auto-latest alias)
> Also as another question,
> too_many_isolated() loop exists in both mm/vmscan.c and mm/compaction.c
> but why this patch does not touch the loop in mm/compaction.c part?
I am not yet convinced the compaction suffers from the same problem.
Compaction backs off much sooner so that path shouldn't get into
pathological situation AFAICS. I might be wrong here but I think we
should start with the reclaim path first.
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2017-01-25 9:53 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
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 [this message]
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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