Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1490885

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 2016-09-25 14:50 +0200
Message-ID <slh2x-6EB-1@gated-at.bofh.it> (permalink)
References <sj11T-2o5-11@gated-at.bofh.it> <skyIa-4aO-17@gated-at.bofh.it> <skzuy-4Kq-9@gated-at.bofh.it> <skBmF-69k-3@gated-at.bofh.it> <slh2x-6EB-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

On 2016-09-25 18:29, Tomasz Chmielewski wrote:

>> I'll try to bisect.
> 
> OK, not a kernel regression, but some config change caused it.
> However, I'm not able to locate which change exactly.
> 
> I'm attaching two configs which I've tried with 4.7.3 - one results in
> thousands of kworkers, and the other doesn't. Also included a diff
> between them.
> 
> Any obvious changes I should try?

The problem is the allocator.

-CONFIG_SLUB=y
+CONFIG_SLAB=y


With SLUB, I'm getting a handful of kworker processes, as expected.

With SLAB, I'm getting thousands of kworker processes.


Not sure if that's expected behaviour or not.


Tomasz Chmielewski
https://lxadm.com

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

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

csiph-web