Our Hyper-V host has an Intel E5-2620 v3 @ 2.40 GHz (6 cores). The host owns a couple of VMs like DC, file server, print server and some small web servers. ALl of which are idling or not requiring much processor power. I lately installed a new VM that does quite a lot of computing. During those tasks the VM processor is under heavy load, with 90–99% CPU usage. But when looking on the host itself during that time, the CPU idles with 4%.
The vmwp.exe process uses 0% CPU power, so I suspect that the CPU usage of all VMs together are not added to the total of the host.
My question is just this: How can I validate that enough resources are allocated to the VM and that 99% CPU usage in the VM is really more than just 1% of the hosts CPU usage?