1. A method of managing per-virtual port performance metrics in a logically partitioned data processing system, the method comprising the computer implemented steps of: allocating a subset of resources of a physical adapter to a virtual adapter of a plurality of virtual adapters, wherein the subset includes a virtual port having an identifier assigned thereto; associating the identifier of the virtual port with an address of a physical port; and associating a metric table with the virtual port, wherein the metric table includes metrics of operations that target the virtual port.