Error message: "NMI watchdog: BUG: soft lockup - CPU#X stuck for XXs!" on console
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Error message: "NMI watchdog: BUG: soft lockup - CPU#X stuck for XXs!" on console

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Article ID: 341140

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Updated On:

Products

VMware vCenter Server

Issue/Introduction

Symptoms:
  •  You have a vCenter Appliance either on 6.5 or 6.7 version
  • You are creating a snapshot of the vCenter Appliance and/or deploying a VCHA
  • You see CPU related errors on the VCSA console
  • You see errors similar too:
[2989.634241] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 42s! [jsvc:8372]
[2989.634244] NMI watchdog: BUG: soft lockup - CPU#1 stuck for 44s! [jsvc:6612]
[18817.970155] NMI watchdog: BUG: soft lockup - CPU#1 stuck for 29s! [vmware-cis-lice:29462]


Environment

VMware vCenter Server Appliance 6.5.x
VMware vCenter Server Appliance 6.7.x

Cause

This is kernel messages informing that vCPU did not get execution for N seconds

Resolution

This message can be safely ignored and shouldn't lead to issues on the vCenter Appliance if timeout is within acceptable timeout range

Workaround:
The most common cause for this could be due to the system is stunned or suffering very high latency. Check the following to verify:
  • Storage performance
  • Snapshot commit performance
  • CPU values for both ESXi and a vCenter Virtual Machine.


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