On 2020-09-28 05:49, Jonathan Billings wrote:
On Sat, Sep 26, 2020 at 04:11:33PM -0700, ToddAndMargo via users wrote:
FC 32, x64
Ext4
Xfce 4.14
Occasionally, my computers slows down. I have not been
able to pin down why. Top shows very little memory usage.
A 1 hour, 12 minute dump (dump/restore) takes 15 hours
when this happens. Pop up menus start to lag behind
the mouse
I am trying to get around the reboot thing.
-T
A reboot ALWAYS fixes the issue.
Brendan Gregg has written several good talks and documents about
various Linux performance measurement tools. You might want to see
what the kernel is doing when you see sluggish behavior.
http://brendangregg.com/linuxperf.html
It does require some deep spelunking into the kernel internals, but it
is actually quite amazing what the kernel has for monitoring its
activities. I use it quite often to debug filesystem behavior, just
poke around /sys/kernel/debug/tracing/events/.
Anything is particular to look at?
https://www.kernel.org/doc/html/v5.8/trace/events.html
From my experience, as an end user providing feedback, the kernel
developers really like it when you can point out a particular syscall
from the trace output that is misbehaving.
--
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Computers are like air conditioners.
They malfunction when you open windows
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