linux-kernel - Re: Kworker with high cpu usage (~80%)

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Date:   Thu, 2 Feb 2017 23:22:54 -0200
From:   Alexandre Vicenzi <vicenzi.alexandre@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-pm@...r.kernel.org
Subject: Re: Kworker with high cpu usage (~80%)

Hi,

Any ideas?

Regards,

Alexandre Vicenzi

2017-01-19 0:13 GMT-02:00 Alexandre Vicenzi <vicenzi.alexandre@...il.com>:
> Hello,
>
> It has been a while that I noticed that kworker/0:1 eats a lot of CPU
> on my computer, about ~80%.
>
> I never found the real problem, but googling the solution was to
> disable some GPE interrupt, in my case it is
> /sys/firmware/acpi/interrupts/gpe13.
>
> This is a dirty solution, actually, it hides the problem I think. I
> have no idea what is the real problem and I would like to understand
> what is.
>
> I'm using kernel 4.9.0-2 now, but it was present on older versions
> too. I'm running OpenSuse on a Samsung laptop (Intel i5 3rd gen).
>
> If someone could point me in the right direction I'll be happy to
> share more info.
>
> Regards,
>
> Alexandre Vicenzi