Microsoft Exchange Performance Counters

Microsoft Exchange Virtualization HyperV Processor counters

Counter Name	Description
Hyper-V Hypervisor Logical Processor\% Guest Run Time
Hyper-V Hypervisor Logical Processor\% Hypervisor Run Time	Shows the percentage of processor time spent in hypervisor code. This is used to measure the total processor utilization of the hypervisor for the entire system.
Hyper-V Hypervisor Logical Processor\% Idle Run Time	Shows the percentage of processor time spent in an idle state. This is used to measure the idle processor for the entire system.
Hyper-V Hypervisor Logical Processor\% Total Run Time	Shows the percentage of processor time spent in guest and hypervisor code. This is used to measure the total processor utilization for hypervisor and all VMs running on the host server.
Hyper-V Hypervisor Root Virtual Processor\% Guest Run Time	Shows the percentage of time used by the virtual processor in guest code. This is used to determine the processor utilization of the virtualization stack on the host server.
Hyper-V Hypervisor Virtual Processor\% Guest Run Time	Shows the percentage of virtual processor time spent in guest code for a specific VM
Hyper-V Hypervisor Virtual Processor\% Hypervisor Run Time	Shows the percentage of processor time spent in hypervisor code for a specific VM
Hyper-V Hypervisor Virtual Processor\% Hypervisor Run Time	Shows the percentage of time used by the virtual processor in hypervisor code. This is used to determine the processor unitization by the hypervisor used by the host (and isn't specific to any VMs).
Hyper-V Hypervisor Virtual Processor\% Idle Run Time	Shows the percentage of processor time spent in an idle state for a specific VM.
Hyper-V Hypervisor Virtual Processor\% Total Run Time	Shows the percentage of processor time spent in guest and hypervisor code for a specific VM.