CPU Usage: Windows, VMware , Logic Monitor

Question

Hello,

If I compare the CPU usage with:

• Windows
• 
• Vmware
• 
• Logic Monitor
• 

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

Thanks,
Dom

Answer 1

@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.

Disclaimer: This response contains a reference to a third party World Wide Web site.
Microsoft is providing this information as a convenience to you. Microsoft does not control these sites and has not tested any software or information found on these sites; therefore, Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there.