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Re: [PATCH] mm, vmscan: do not loop on too_many_isolated for ever

From Rik van Riel <riel@redhat.com>
Newsgroups linux.kernel
Subject Re: [PATCH] mm, vmscan: do not loop on too_many_isolated for ever
Date 2017-07-10 16:00 +0200
Message-ID <u1Hoe-5IV-19@gated-at.bofh.it> (permalink)
References <u1BCb-28a-15@gated-at.bofh.it>
Organization Red Hat, Inc

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On Mon, 2017-07-10 at 09:48 +0200, Michal Hocko wrote:

> Johannes and Rik had some concerns that this could lead to premature
> OOM kills. I agree with them that we need a better throttling
> mechanism. Until now we didn't give the issue described above a high
> priority because it usually required a really insane workload to
> trigger. But it seems that the issue can be reproduced also without
> having an insane number of competing threads [3].

My worries stand, but lets fix the real observed bug, and not worry
too much about the theoretical bug for now.

Acked-by: Rik van Riel <riel@redhat.com>

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Thread

[PATCH] mm, vmscan: do not loop on too_many_isolated for ever Michal Hocko <mhocko@kernel.org> - 2017-07-10 09:50 +0200
  Re: [PATCH] mm, vmscan: do not loop on too_many_isolated for ever Vlastimil Babka <vbabka@suse.cz> - 2017-07-10 15:20 +0200
  Re: [PATCH] mm, vmscan: do not loop on too_many_isolated for ever Rik van Riel <riel@redhat.com> - 2017-07-10 16:00 +0200
    Re: [PATCH] mm, vmscan: do not loop on too_many_isolated for ever Johannes Weiner <hannes@cmpxchg.org> - 2017-07-10 19:00 +0200
      Re: [PATCH] mm, vmscan: do not loop on too_many_isolated for ever Michal Hocko <mhocko@kernel.org> - 2017-07-10 19:20 +0200

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