A method, apparatus, system, and computer program product for managing a network data processing system. Digital twins of physical devices in the network data processing system are run by a computer system. The digital twins process workloads and the digital twins communicate with each other. An impact on a number of parameters for a first set of the digital twins that a second set of the digital twins has on the first set of the digital twins is identified by the computer system. A set of actions is performed by the computer system based on the impact on the number of parameters.