It looks like mutter is *asking* to be killed if any system calls take too long:
setrlimit (RLIMIT_RTTIME...
and that only seems to happen on some Ryzen systems. Still, I'm not so sure the default limit of 200ms (inherited from rtkit) is sensible if the machine would otherwise recover. It's not like the problem is happening on every frame.
It looks like mutter is *asking* to be killed if any system calls take too long:
setrlimit (RLIMIT_RTTIME...
and that only seems to happen on some Ryzen systems. Still, I'm not so sure the default limit of 200ms (inherited from rtkit) is sensible if the machine would otherwise recover. It's not like the problem is happening on every frame.