On 11 April 2023 17:49:33 CEST, Luna Celeste <luna@xxxxxxxxxxxx> wrote: >>>it's been randomly hanging. >> >> Also, things that may help you track this down: >> - monitor /proc/interrupts when it freezes > >This is a 16 core processor and there's too much output on my 27" >display to view it all at once; suggestions? I would try to run something like this in the background: watch -n 1 "cat /proc/interrupts >> ~/watch.log && sync" (I did not check that the command works as expected but you get the intention). Once a crash is caught, analyze the produced logs. Perhaps you can monitor other files from sysfs/debugfs as well. Another thing that comes to mind: perhaps your system is still running, albeit very slow. I see that you're running libvirt. I've had a problem like this on my host: for more than a year, it would randomly and seldomly "freeze" (become astonishingly slow) when starting a VM (Windows guest with multiple passthroughs). I tried to debug this by increasing journald/kernel log levels but the issue appears to have vanished lately. I just assumed that it was fixed upstream, but perhaps it's still there.
