A method of measuring server performance includes recording a time of queuing a request by a client for primary resources managed by the server; recording an estimated wait time for responding to the request for primary resources; recording a time of service for the request for primary resources; and calculating a punctuality metric of the request for primary resources by subtracting the difference between the time of service and the time of queuing from the estimated wait time. The punctuality metric is representative of the performance of the server.