SYSTEM AND METHOD FOR ATTRIBUTING TO A CORRESPONDING VIRTUAL MACHINE CPU USAGE OF AN ISOLATED DRIVER DOMAIN IN WHICH A SHARED RESOURCE'S DEVICE DRIVER RESIDES

According to at least one embodiment, a method comprises observing communication from a virtual machine (VM) to an isolated driver domain. The method further comprises determining, based on the observed communication, CPU utilization of the isolated driver domain that is attributable to the VM. According to at least one embodiment, a system comprises a Central Processing Unit (CPU), Virtual Machines (VMs), and a first isolated driver domain in which a first device driver for a first shared resource resides, wherein the first isolated driver domain is operable to receive requests from the VMs for access to the first shared resource. The system further comprises a CPU utilization monitor operable to determine an amount of CPU utilization of the first isolated driver domain in processing the received requests that is attributable to a VM requesting access to the first shared resource.