This timestamp records when the FSM workflow tracked by the finite-state-machine object that drives a physical port's own workflow (such as a re-discovery cycle) from start to finish finished running, whether it succeeded or failed. An administrator auditing how long a port-related operation took subtracts the workflow's start time from completionTime on this PhysFsm instance to measure how long UCS Manager needed to finish it. For example, a completionTime that never gets populated on this PhysFsm instance would tell the operator the underlying workflow is still running rather than having quietly finished.