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Groups > linux.kernel > #1217542

Re: Only 1 cpu scheduled in 4.2.0

From Mike Galbraith <umgwanakikbuti@gmail.com>
Newsgroups linux.kernel
Subject Re: Only 1 cpu scheduled in 4.2.0
Date 2015-09-02 13:50 +0200
Message-ID <q4eI9-3YQ-9@gated-at.bofh.it> (permalink)
References <q4cGo-17b-41@gated-at.bofh.it> <q4dVM-2P4-7@gated-at.bofh.it> <q4eyu-3NB-11@gated-at.bofh.it>
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On Wed, 2015-09-02 at 13:35 +0200, Martin van Es wrote:
> On Wed, Sep 2, 2015 at 12:50 PM, Mike Galbraith
> <umgwanakikbuti@gmail.com> wrote:
> > On Wed, 2015-09-02 at 11:38 +0200, Martin van Es wrote:
> >> Hi,
> >>
> >> I recently compiled 4.2.0 based on my previous 4.1.6 config (make oldconfig).
> >> On 4.1.6 all cores are equally scheduled.
> >
> > Do you have CONFIG_NO_HZ_FULL_ALL enabled?
> 
> Yes, that's enabled.

Turn it off and you'll get your CPUs back.

	-Mike

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Thread

Only 1 cpu scheduled in 4.2.0 Martin van Es <mrvanes@gmail.com> - 2015-09-02 11:40 +0200
  Re: Only 1 cpu scheduled in 4.2.0 Mike Galbraith <umgwanakikbuti@gmail.com> - 2015-09-02 13:00 +0200
    Re: Only 1 cpu scheduled in 4.2.0 Martin van Es <mrvanes@gmail.com> - 2015-09-02 13:40 +0200
      Re: Only 1 cpu scheduled in 4.2.0 Mike Galbraith <umgwanakikbuti@gmail.com> - 2015-09-02 13:50 +0200
        Re: Only 1 cpu scheduled in 4.2.0 Martin van Es <mrvanes@gmail.com> - 2015-09-02 16:50 +0200

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