Gentoo Archives: gentoo-user

From: Andreas Fink <finkandreas@×××.de>
To: gentoo-user@l.g.o
Subject: [gentoo-user] kworker using 100% cpu
Date: Mon, 04 Mar 2019 19:44:45
1 Hello,
2 I have a problem which uses 100% of one cpu core on my HP-15-bs114ng notebook.
3 I figured out already that it is somehow related to ACPI interrupts, since the following
4 command will return the system to normal:
5 echo disable > /sys/firmware/acpi/interrupts/gpe16
7 The content of this "file" is the following:
8 3749821 STS disabled unmasked
10 The first column is the number of interrupts, that happened, which is very high, hence
11 the 100% cpu usage in one kworker process.
13 My question would be the following now:
14 1. What could be the side effects of disabling this interrupt?
15 2. What could trigger the interrupt?
16 3. How can this be debugged further and reported, i.e. who would be able to fix it?
18 (This happens on all kernels, since I have the notebook, i.e. >= 4.17)
20 Cheers
21 Andreas


Subject Author
Re: [gentoo-user] kworker using 100% cpu Mick <michaelkintzios@×××××.com>