vCPU and cores per CPU boggling your mind?

  • 22 October 2019
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Let’s say you have Nutanix cluster with 24 CPU cores and 2 sockets and now you’re confused regarding the terminology. 

 

vCPU and cores per CPU and how to provision CPU to a Virtual Machine confusing you?

 

Let’s break the terminology down in simple terms!

In the world of Hardware, we have sockets and cores. In a host, there would be 2 sockets(or CPU) and 12 cores in each socket, resulting in 24 cores.

So what is a vCPU?

vCPU corresponds to the number of sockets for the VM.

 

Cores per vCPU correspond to cores in a socket, so in conclusion, if you have provisioned your VM with the following configuration:

  • 2  vCPU
  • 4 core per vCPU

In this scenario, your VM would have 2 sockets and 8 cores in total.

How can I provision my vCPU, is there a guide or documentation regarding it?

Absolutely yes, please give the following article a read

CPU Configuration

 

So is there a way to overprovision my CPU?


Absolutely yes, please give the following article a read
CPU Oversubscription

 


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