Abstract
Real-time safety-critical systems are getting more complicated due to the introduction of mixed-criticality systems. The increasing use of mixed-criticality systems has motivated the real-time systems research community to investigate various non-functional aspects of these systems. Energy consumption minimization is one such aspect which is just beginning to be explored. In this paper, we propose a time-triggered dynamic voltage and frequency scaling (DVFS) algorithm for uniprocessor mixed-criticality systems. We show that our algorithm outperforms the predominant existing algorithm which uses DVFS for mixed-criticality systems with respect to minimization of energy consumption. In addition, ours is the first energy-efficient time-triggered algorithm for mixed-criticality systems. We prove an optimality result for the proposed algorithm with respect to energy consumption. Then we extend our algorithm for tasks with dependency constraints.
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