Energy Characterization of Real-Time Partitioned Systems

This paper addresses the problem of energy characterization in partitioned systems. The goal is to use this model to minimize energy consumption. Controlling the frequency at which CPUs can operate is a common technique to reduce the system energy consumption. Techniques as DVFS assume that decreasing the system frequency decreases the system energy, in spite of increasing the time the processor is busy. This relationship between temporal load, frequency and energy is studied in this paper. All works assume that this relationship is linear but we provide a new energy model that relates the previous variables through a non-linear relation. We also present a comparison in terms of energy between the linear and the non-linear model.