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In the vmkernel.log, you see messages such as:2021-05-28T21:39:59.895Z cpu68:1001449770)ALERT: Heartbeat: HandleLockup:827: PCPU 8 didn't have a heartbeat for 5 seconds, timeout is 14, 1 IPIs sent; *may* be locked up.2021-05-28T21:39:59.895Z cpu8:1001449713)WARNING: World: vm 1001449713: PanicWork:8430: vmm3:VM_NAME:vcpu-3:Received VMkernel NMI IPI, possible CPU lockup while executing HV VT VMThe issue is due to a rare race condition in vCPU timers. Because the race is per-vCPU, larger VMs are more exposed to the issue.
In rare occasions, the VMkernel might consider a virtual machine unresponsive, because it fails to send PCPU heartbeats properly, and shut the VM down.
This issue is resolved in 7.0 U3D.Refer: VMware ESXi 7.0 Update 3d Release Notes
Disable PCPU heartbeat by using the command:vsish -e set /reliability/heartbeat/status 0 Note:This change is non-persistent. Disabling the PCPU heartbeat setting is effective only until the next reboot.
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