Groups > linux.kernel > #1562386 > unrolled thread

Kworker with high cpu usage (~80%)

Started by	Alexandre Vicenzi <vicenzi.alexandre@gmail.com>
First post	2017-01-19 03:30 +0100
Last post	2017-01-19 03:30 +0100
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  Kworker with high cpu usage (~80%) Alexandre Vicenzi <vicenzi.alexandre@gmail.com> - 2017-01-19 03:30 +0100

#1562386 — Kworker with high cpu usage (~80%)

From	Alexandre Vicenzi <vicenzi.alexandre@gmail.com>
Date	2017-01-19 03:30 +0100
Subject	Kworker with high cpu usage (~80%)
Message-ID	<t1aE9-3NW-11@gated-at.bofh.it>

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

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Kworker with high cpu usage (~80%)

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#1562386 — Kworker with high cpu usage (~80%)