Bug#838491: linux-image-4.7.0-0.bpo.1-amd64-unsigned: extreme load averages and over 2000 kworker threads

From	Ben Hutchings <ben@decadent.org.uk>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#838491: linux-image-4.7.0-0.bpo.1-amd64-unsigned: extreme load averages and over 2000 kworker threads
Date	2016-10-10 16:30 +0200
Message-ID	<sqJKy-2la-27@gated-at.bofh.it> (permalink)
References	<sqJKy-2la-29@gated-at.bofh.it> <sqJhv-1Wk-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Mon, 2016-10-10 at 15:41 +0200, Markus Koeberl wrote:
> Package: src:linux
> Followup-For: Bug #838491
> 
> Dear Maintainer,
> 
>    * What led up to the situation?
> 
> upgrade kernel and systemd to the version proveded in jessie-
> backports
> 
>    * What exactly did you do (or not do) that was effective (or
>      ineffective)?
> 
> during normal usage (slurm cluster node):
> 
> load average: 1290.54, 513.19, 466.29
> 
> the load 5 peaks reache 2000
>
> ps aux | grep kworker | wc -l
> 4188
[...]

I think this might be fixed by "mm: memcontrol: use special workqueue
for creating per-memcg caches" included in version 4.7.6-1.  Let us
know whether that does it.

Ben.

-- 
Ben Hutchings
Unix is many things to many people,
but it's never been everything to anybody.

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Bug#838491: linux-image-4.7.0-0.bpo.1-amd64-unsigned: extreme load averages and over 2000 kworker threads Ben Hutchings <ben@decadent.org.uk> - 2016-10-10 16:30 +0200
  Bug#838491: linux-image-4.7.0-0.bpo.1-amd64-unsigned: extreme load averages and over 2000 kworker threads Markus Koeberl <markus.koeberl@tugraz.at> - 2016-10-14 15:50 +0200

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