VM Bus Traffic Test

Child partitions do not have direct access to hardware resources, but instead have a virtual view of the resources, in terms of virtual devices. Any request to the virtual devices is redirected via the VMBus to the devices in the parent partition, which will manage the requests. The VMBus is a logical channel which enables inter-partition communication. The response is also redirected via the VMBus.

Using this test, you can measure the level of activity on the VMBus.

Target of the test : A Hyper-V / Hyper-V VDI server

Agent executing the test : An internal agent

Output of the test : One set of results for the Hyper-V host monitored

Configurable parameters for the test
Parameter Description

Test period

This indicates how often should the test be executed.


Specify the HOST for which this test is to be configured.

Measurements reported by the test
Measurement Description Measurement Unit Interpretation

Interrupts received

Indicates the number of interrupts received since the last measurement period.



Interrupts sent

Indicates the number of interrupts sent since the last measurement period.



Throttle events

Indicates the total number of times since the last measurement period that any partition has been throttled, which is to say that its interrupts were disabled.