In one embodiment, a virtualization analysis tool defines a classification weight value for each physical computing device from a plurality of physical computing devices, defines an effective utilization value for that physical computing device, and associates a virtual migration priority with that physical computing device based on the effective utilization value. The virtualization analysis tool defines the effective utilization value based on the classification weight value, a first utilization weight value, and a second utilization weight value. The first utilization weight value is associated with a first resource of that physical computing device, and the second utilization weight value associated with a second resource of that physical computing device. The virtual migration priority has a first value if the effective utilization value is within a first range of utilization weight values and a second value if the effective utilization value is within a second range of utilization weight values.