On Mon November 9 2020 16:19:46 Dan Youngquist via tde-users wrote:
> On 11/09/2020 02:12 PM, Mike Bird via tde-users wrote:
> > "ps ax | grep pid" should give a clue as to what that PID is doing.
> > From there you can use your favorite engine to search for further
> > clues.
>
> It doesn't tell me anything new, just gives the same task name that's in
> top's Command column.
Almost anything can cause this. I recall seeing reports of USB, graphics,
and filesystems. However it's mostly in older kernels.
(1) Let's verify that you're running the correct kernel and
not an older kernel where this was common:
# cat /proc/version
Should be a 4.19 kernel.
(2) See if the kworker's stack gives you any clues as to what
it's up to:
# cat /proc/(pid)/stack
(3) See if any interrupts are going wild:
# grep . -r /sys/firmware/acpi/interrupts/ | sort -n -k2 | tail
# sort -n -k2 /proc/interrupts | tail -5
Best to compare to another machine with similar uptime as some of
those numbers do get high very quickly.
(4) Try a kernel mailing list. We're not kernel experts here at TDE.
Good luck,
--Mike
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