pCPU vs vCPU - Relation/Ratio

[MMarques]

Hi all.

I have a doubt concerning the relation between the physical capacity and virtual capacity for processing.

Suppose that I have a cluster which has 3 servers with 2 pCPU, each pCOU with 10 cores and hyperthreading active.

For the point of view of the host capacity each host has:

- Processor sockets: 2

- Cores per socket 10

- Logical processors: 40

How many vCPU's do I have? Is there any tool to calculate it?

When I create a VM I'm requested to "select the number of virtual CPUs for the virtual machine" and there I have:

Number of virtual sockets

and

Number of cores per virtual socket

What is the relation between this and the physical environment?

Many thanks.

Best regards,

Manuel

[nascied]

Hi, Manuel.

On the website of maximum configurations it is informed that 32 vCPU per Core is supported. In other words, if you have 40 x 32 they give 128 vCPU. However you must work out your ratio. On the website of maximum configurations it is informed that 32 vCPU per Core is supported. In other words, if you have 40 x 32 they give 128 vCPU. However you must work out your ratio. considering oversubscription for your environment.

https://configmax.vmware.com/