Q. Can I set processor affinity with Hyper-V?

John Savill

January 5, 2010

1 Min Read
ITPro Today logo

A. In virtualization, processor affinity (also known as hard affinity) allows you to link a virtual processor with a physical core in the host. This is required in many virtualization solutions because a virtual machine (VM) needs to make sure it always gets a full CPU's worth of processing, and the virtual layers don't have other ways of ensuring a VM always gets a full core.

Hyper-V can reserve a percentage of a CPU's processing power for a VM, but doesn't require you to reserve a specific core for a VM. You can set that reserve to 100 percent, meaning a VM is guaranteed to have a full CPU core's processing power. Setting a 100 percent reservation for a VM has more or less the same effect as setting a processor affinity, but Hyper-V doesn't need processor affinity nor support it.

Related Reading:



Check out hundreds more useful Q&As like this in John Savill's FAQ for Windows. Also, watch instructional videos made by John at ITTV.net.

About the Author(s)

Sign up for the ITPro Today newsletter
Stay on top of the IT universe with commentary, news analysis, how-to's, and tips delivered to your inbox daily.

You May Also Like