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Summary: DFR-EDF: A Unified Energy Management Framework for Real-Time Systems
Vinay Devadas Hakan Aydin
Department of Computer Science
George Mason University
Fairfax, VA 22030
{vdevadas, aydin}@cs.gmu.edu
Abstract
Dynamic Voltage Scaling (DVS) and Dynamic Power Manage-
ment (DPM) techniques form the basis of numerous energy man-
agement schemes proposed for real-time embedded systems. DVS
targets reducing the dynamic CPU energy consumption, while DPM
attempts to reduce the energy consumption of idle devices by putting
them to low-power states over sufficiently long intervals. It is imper-
ative that the system-wide energy management schemes efficiently
integrate DVS and DPM while exploiting the subtle trade-off dimen-
sions. In this paper, we develop and propose a unified framework for
periodic real-time tasks where DVS and DPM are judiciously com-
bined. The framework, called DFR-EDF, assumes a general system-
level energy model and includes both static and dynamic (online)
components. The static part is based on the extension of the recently
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