CPU Usage: Windows, VMware , Logic Monitor

Duchemin, Dominique 2,006 Reputation points
Jul 3, 2022, 11:44 PM

Hello,

If I compare the CPU usage with:

  • Windows
  • 217165-2022-07-03-16-35-59-vrpsccmsql01-cpu-windows.png
  • Vmware
  • 217175-2022-07-03-16-38-51-vrpsccmsql01-cpu-vmware.png
  • Logic Monitor
  • 217196-2022-07-03-16-39-40-vrpsccmsql01-cpu-logic-monitor.png

I have discrepancies as VMware is 10 to 20 % lower than the two others, why?

Thanks,
Dom

Azure VMware Solution
Azure VMware Solution
An Azure service that runs native VMware workloads on Azure.
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Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
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Accepted answer
  1. vipullag-MSFT 26,416 Reputation points
    Jul 4, 2022, 9:03 AM

    @Duchemin, Dominique

    Welcome to Microsoft Q&A Platform, thanks for posting your query here.

    When the Guest OS will report a higher usage of CPU's than the hypervisor will, as in the period when the load test was running above, Windows doesn’t know that part of the time, the CPUs are being stolen away from it and given to other guest machines.
    As far as it knows, it is using all the CPU it can on 3 of the 4 CPUs, so that must equal 75% load. It doesn’t know that part of the time, it has no access to the CPU’s as they are being used elsewhere, so the real time CPU usage is only about 50%.

    Please refer this article which gives some logical explanation.

    Hope that helps.
    If the suggested response helped you resolve your issue, please 'Accept as answer', so that it can help others in the community looking for help on similar topics.

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