What is vCPU?

Virtual Central Processing Units (vCPUs) represents a share of a physical central processing unit (CPU) that is assigned to a virtual machine. To illustrate the role of vCPUs, a physical server will have CPUs with cores inside each CPU. As it relates to virtualization and the cloud, multiple vCPUs can be assigned to and utilize one CPU core. 

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Usually, one vCPU is assigned to one CPU core but depending on the hypervisor, multiple vCPUs can be assigned to one core. The resources of a physical system are assigned to a virtual machine by the hypervisor, which is the program that hosts and manages virtual machines. Also, for some, vCPUs are not a separate CPU but rather a share of the time spent in the assigned core. 

vCPUs And The Cloud

The benefits of vCPUs are in the versatility and additional functionality it allows system administrators. Through virtualization, system admins can partition physical hardware to provide more functionalities, allowing them to utilize virtual resources for a more robust network. It also allows for the quick adjustment of resources so the server keeps up with the needs of the business and its customers. 

OpenStack powered flex metal

Now that you’ve learned about Virtual Central Processing Units and how they assist with the high performance of a cloud server, learn more about OpenStack and Flex Metal with our informative articles. Experience OpenStack and vCPUs in action, learn more about our OpenStack powered Flex Metal solution.


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