A Generalized Model to Control the Throughput in a Processor for Real-Time Applications

Abstract

In this paper we present a control theory approach to stabilize the throughput of threads for real-time applications on a multithreaded processor. We use a statistical model of a super scalar, multi-threaded processor as transfer function to calculate the resulting IPC rate. Our control theory approach is not limited to a specific processor and can be adapted to different microprocessor architectures. We are able to guarantee a minimum IPC rate within a defined convergence interval. Furthermore our results provide a method to improve WCET analysis, because inaccuracies of the processor model are soften by the use of our control theory approach.