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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <CAMHH1fU0Rq7eKvN7O8B1YA5XzsHA1feRtBYanrj5caWC8dYsxw@mail.gmail.com>
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