Netware virtual machines report high CPU usage after upgrading to 4.1
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Netware virtual machines report high CPU usage after upgrading to 4.1


Article ID: 304417


Updated On:


VMware vSphere ESXi


  • After upgrading to ESX 4.1, Netware 5.1 SP8 virtual machines report a considerably high CPU usage
  • An increase in CPU usage is seen in the virtual machine, esxtop, and the vCenter performance graphs
  • In the vmware.log file, you see entries similar to:

    Sep 21 09:37:57.379: vcpu-0| Vix: [104948 guestCommands.c:2488]: Error VIX_E_UNRECOGNIZED_COMMAND_IN_GUEST in VMAutomationTranslateGues
    tRpcError(): Tools failed to recognize guest command op code=62, result string="Unknown Command".

esx-upgrade high-cpu-usage


VMware ESX 4.1.x


This issue occurs when the virtual machine’s instruction stream is run using binary translation (BT).
To workaround this issue, for all affected ESX/ESXi 4.1 hosts, configure the virtual machines to use hardware CPU/MMU virtualization.
To change the virtualization to hardware CPU/MMU:
  1. Log in to vCenter Server using the vSphere Client.
  2. In the virtual machine inventory, right-click the virtual machine and click Edit Settings.
  3. Click the Options tab.
  4. Under Advanced, click CPU/MMU Virtualization.
  5. Select the Use Intel VT-X/AMD-V for instruction set virtualization and Intel EPT/AMD RVI for MMU virtualization option.
  6. Click OK to save your changes.
For more information, see:

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