Posts Tagged ‘ vCPU ’

Host Only Supports 1 vCPU: Licensing?

December 2, 2010
By

I had a fun day resolving a licensing issue for a client. This one was a little different than I had seen in the past. The cluster is question is an eight node cluster running ESX 3.5. The error message that I received when trying to perform a vMotion was “Unable to migrate from HostA…

Read more »

Virtual CPU’s, CPU Ready and Applications Performance on vSphere

November 16, 2010
By
Virtual CPU’s, CPU Ready and Applications Performance on vSphere

In a virtual system the tenancy to translate over-provisioning physical CPU's into over-provisioning virtual CPU's can be very harmful as the graph above shows. Assigning four vCPU's to a VM makes it harder for that VM to get scheduled in as the hypervisor has to wait for four vCPU's to become available at the same…

Read more »

Featured Solutions