On runtime management in multi-core packet processing systems

Abstract

Computer networks require increasingly complex packet processing in the data path to adapt to new functionality requirements. To meet performance demands, packet processing systems on routers employ multiple processor cores. We investigate the design of an efficient run-time management system that handles the allocation of processing tasks to processor cores. Using run-time profiling information about processing requirements and traffic characteristics, the system is able to adapt to dynamic changes in the workload and balance the utilization of all processing resources to maximize throughput. We present a prototype implementation of our system that is based on the Click modular router. Our results show that our prototype system can adapt to changing workloads and process computationally demanding packets at 1.32 times higher data rates than SMP Click.