HyperV_Mon monitors physical, logical, and virtual performance information that is available when running virtual machines under Microsoft Hyper-V.
The graphical display is organized to help easily understand the CPU performaces being experienced.
Detailed text displays also help highlight other performance issues such as memory, paging, and I/O.
Additional information is provided about virtualization “overhead” that is detected within the VMs.
The documentation for the toolkit is available in PDF format here.