baber
Expert
Expert

Is my CPU Ready Time ok

According to attach pic my vm has 8vcpu and show ready time for one vcpu is about 70ms although other vcpus are ok

Three questions :

1- Why it shows just one of my vcpu ready time is high is that normal ?
2-Is  Avg about 43ms normal for this ?
3- How much ms is normal and how much is abnormal ?

BR
 

Please mark helpful or correct if my answer resolved your issue.
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3 Replies
depping
Leadership
Leadership

that is the summation, it is I believe a 20 seconds interval, probably easier to look at the Percentage Ready Time. It gives a better idea of how much time the vCPU, or VM, is waiting to be scheduled.

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berndweyand
Expert
Expert

for easy calculation look at http://www.vmcalc.com

in your case choose chart type "realtime", cpu summation "77" and number of vcpu "8"

as long as you are below 5 % its ok

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bryanvaneeden
Hot Shot
Hot Shot

Looking at your chart, you should not have to be worried about the CPU Ready time. Like others have said this is the summation, so you will have to divide the number by the interval you can see right there, which looks to be 20 seconds.

So the calculation will be 60/(20*1000)*100 = 0,30% (see https://kb.vmware.com/s/article/2002181

The general concensus is that 2-3% CPU Ready might give some noticable issues, and above 5% it is probably giving issues.

 

 

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