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vm7user
Enthusiast
Enthusiast

VM CPU usage

Hello,

ESXi 6 host with 2* 6 core Xeon 2,53GHz

VM with 6 vCPU (Windows Server 2008 R2)

VM OS monitored via PRTG.

When PRTG show VM OS CPU load ~80%, vSphere Client Performance Chart show CPU usage ~8255 MHz.

Very strange.

6*2.53GHz = 15180 MHz

80% * 15180 =  12144 MHz

Why vSphere Client Performance Chart show only 8255 MHz?

5 Replies
vijayrana968
Virtuoso
Virtuoso

What does it shows inside guest OS ? To get brief details, use ESXTOP and then compare results.

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vm7user
Enthusiast
Enthusiast

inside OS PRTG show 80% CPU usage

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vijayrana968
Virtuoso
Virtuoso

Paste the two snippet.

1. Task Manger > Performance > CPU

pastedImage_0.png

2. Snippet of CPU usage at vSphere level.

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iamamit
Enthusiast
Enthusiast

Hello, Guest OS CPU usage will always be different that VM CPU usage on the perticular ESXi host.. To understand it better, I would recommend you to read the article given below:

The greatest confusion between VMware vSphere performance report of a VM’s CPU/RAM usage and the act... 

Thanks

vijayrana968
Virtuoso
Virtuoso

I know this very well. What I m trying is, to reproduce the CPU usage at all 3 level mentioned to analyze the symptoms.

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