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

From Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Newsgroups linux.kernel
Subject Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of RAM that should be free
Date 2016-11-30 15:00 +0100
Message-ID <sJdAu-6My-27@gated-at.bofh.it> (permalink)
References (6 earlier) <sIT8J-2eS-23@gated-at.bofh.it> <sITBL-2rZ-11@gated-at.bofh.it> <sIU4N-2TK-3@gated-at.bofh.it> <sIUHv-37J-11@gated-at.bofh.it> <sIZHb-6sA-23@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 2016/11/30 8:01, Marc MERLIN wrote:
> And, after 5H of copying, not a single hang, or USB disconnect, or anything.
> Obviously this seems to point to other problems in the code, and I have no
> idea which layer is a culprit here, but reducing the buffers absolutely
> helped a lot.

Maybe you can try commit 63f53dea0c9866e9 ("mm: warn about allocations which stall for too long")
or http://lkml.kernel.org/r/1478416501-10104-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp
for finding the culprit.

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Thread

Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of  RAM that should be free Michal Hocko <mhocko@kernel.org> - 2016-11-28 08:30 +0100
  Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of RAM that should be free Marc MERLIN <marc@merlins.org> - 2016-11-28 22:00 +0100
  Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of  RAM that should be free Marc MERLIN <marc@merlins.org> - 2016-11-29 17:00 +0100
    Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of  RAM that should be free Michal Hocko <mhocko@kernel.org> - 2016-11-29 17:10 +0100
      Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of  RAM that should be free Marc MERLIN <marc@merlins.org> - 2016-11-29 17:40 +0100
        Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of  RAM that should be free Linus Torvalds <torvalds@linux-foundation.org> - 2016-11-29 18:10 +0100
          Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of  RAM that should be free Marc MERLIN <marc@merlins.org> - 2016-11-29 18:50 +0100
            Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of  RAM that should be free Linus Torvalds <torvalds@linux-foundation.org> - 2016-11-29 19:10 +0100
              Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of  RAM that should be free Marc MERLIN <marc@merlins.org> - 2016-11-30 18:50 +0100
                Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of  RAM that should be free Linus Torvalds <torvalds@linux-foundation.org> - 2016-11-30 19:20 +0100
                Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of  RAM that should be free Marc MERLIN <marc@merlins.org> - 2016-11-30 19:30 +0100
                Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of  RAM that should be free Tejun Heo <tj@kernel.org> - 2016-11-30 21:40 +0100
                Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of  RAM that should be free Kent Overstreet <kent.overstreet@gmail.com> - 2016-12-01 15:00 +0100
                Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of  RAM that should be free Linus Torvalds <torvalds@linux-foundation.org> - 2016-12-01 19:20 +0100
                Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of  RAM that should be free Linus Torvalds <torvalds@linux-foundation.org> - 2016-12-01 19:40 +0100
            Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of RAM that should be free Marc MERLIN <marc@merlins.org> - 2016-11-30 00:10 +0100
              Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of  RAM that should be free Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-11-30 15:00 +0100
  Re: 4.8.8 kernel trigger OOM killer repeatedly when I have lots of  RAM that should be free Marc MERLIN <marc@merlins.org> - 2016-11-29 17:20 +0100

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