Eduardo Tavares
ABSTRACT
Over the last years, DVS (Dynamic Voltage Scaling) hasbeen adopted as an effective technique for reducing energyconsumption in embedded systems. In the context of hard real-time embedded systems, several scheduling approaches have been developed to address voltage scaling together with stringent timing constraints. However, intertask relations as well as overheads, such as preemptions and frequency/voltage switchings, have been neglected, in such a way that those approaches may generate schedules that may not properly meet system constraints. This work presents a method for hard real-time systems scheduling considering dynamic voltage scaling, overheads, precedence and exclusion relations. The proposed work adopts a formal model based on time Petri nets in order to find a feasible schedule using apre-runtime approach that satisfies timing and energy constraints.
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Index Terms
- A time petri net-based approach for hard real-time systems scheduling considering dynamic voltage scaling, overheads, precedence and exclusion relations
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