"smpboot: Scheduler frequency invariance went wobbly, disabling!" on nohz_full CPUs after long run
Issue
- On a RHEL system configured with the
nohz_fullkernel parameter, the following warning message may be logged in the kernel log (dmesgor/var/log/messages) after a long period of system uptime:
kernel: smpboot: Scheduler frequency invariance went wobbly, disabling!
Environment
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
nohz_full
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