Re: thousands of kworker processes with 4.7.x and 4.8-rc*

From	Tomasz Chmielewski <mangoo@wpkg.org>
Newsgroups	linux.kernel
Subject	Re: thousands of kworker processes with 4.7.x and 4.8-rc*
Date	2016-09-27 06:00 +0200
Message-ID	<slRIJ-4r1-7@gated-at.bofh.it> (permalink)
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On 2016-09-26 04:07, Nikolay Borisov wrote:

>> Not sure if that's expected behaviour or not.
> 
> 
> Why don't you sample the stacks of some of those kworker processes to
> see if they are all executing a parituclar piece of work. That might
> help you narrow down where they originate from. Cat multiple
> /proc/$kworker-pid/stack files and see if a pattern emerges.

FYI, it was reproduced and bisected here (scroll to the bottom):

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1626564


Tomasz Chmielewski
https://lxadm.com

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Re: thousands of kworker processes with 4.7.x and 4.8-rc* Tomasz Chmielewski <mangoo@wpkg.org> - 2016-09-23 15:30 +0200
  Re: thousands of kworker processes with 4.7.x and 4.8-rc* Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-09-23 16:20 +0200
    Re: thousands of kworker processes with 4.7.x and 4.8-rc* Tomasz Chmielewski <mangoo@wpkg.org> - 2016-09-23 18:20 +0200
      Re: thousands of kworker processes with 4.7.x and 4.8-rc* Tomasz Chmielewski <mangoo@wpkg.org> - 2016-09-25 14:50 +0200
        Re: thousands of kworker processes with 4.7.x and 4.8-rc* Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-09-25 19:30 +0200
          Re: thousands of kworker processes with 4.7.x and 4.8-rc* Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-09-25 20:30 +0200
        Re: thousands of kworker processes with 4.7.x and 4.8-rc* Nikolay Borisov <n.borisov.lkml@gmail.com> - 2016-09-25 21:10 +0200
          Re: thousands of kworker processes with 4.7.x and 4.8-rc* Tomasz Chmielewski <mangoo@wpkg.org> - 2016-09-27 06:00 +0200

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