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Published in:
2005 | OriginalPaper | Chapter
Energy Management for Embedded Multithreaded Processors with Integrated EDF Scheduling
Authors : Sascha Uhrig, Theo Ungerer
Published in: Systems Aspects in Organic and Pervasive Computing - ARCS 2005
Publisher: Springer Berlin Heidelberg
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This paper proposes a new hardware-based energy management technique for future embedded multithreaded processors with integrated Earliest Deadline First (EDF) real-time scheduling. Our energy management technique controls frequency reduction and dynamic voltage scaling depending on the deadlines, the Worst Case Execution Times (WCET), and the real execution times. Hard real-time capability can be guaranteed for aperiodic threads and for threads with deadlines shorter than their period. Our evaluations show that energy consumption can be reduced up to about
$\frac{2}{3}$
of a comparable software-based algorithm.