Multiversion scheduling in rechargeable energy-aware real-time systems

In the context of battery-powered real-time systems three constraints need to be addressed: energy; deadlines; and task rewards. Many future real-time systems will count on different software versions, each with different rewards, time and energy requirements, to achieve a variety of QoS-aware trade...

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Bibliographic Details
Published in15th Euromicro Conference on Real-Time Systems, 2003. Proceedings pp. 95 - 104
Main Authors Rusu, C., Melhem, R., Mosse, D.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2003
Subjects
Battery management systems
Computer science
Energy consumption
Energy management
Frequency
Performance loss
Power system management
Processor scheduling
Real time systems
Voltage
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Summary:In the context of battery-powered real-time systems three constraints need to be addressed: energy; deadlines; and task rewards. Many future real-time systems will count on different software versions, each with different rewards, time and energy requirements, to achieve a variety of QoS-aware tradeoffs. We propose a solution that allows the device to run the most valuable task versions while still meeting all deadlines and without depleting the energy. Assuming that the battery is rechargeable, we also propose: (a) a static solution that maximizes the system value assuming a worst-case scenario (i.e., worst-case task execution times); and (b) a dynamic scheme that takes advantage of the extra energy in the system when worst-case scenarios do not happen. Three dynamic policies are shown to make better use of the recharging energy while improving the system value.
ISBN:0769519369
9780769519364
DOI:10.1109/EMRTS.2003.1212732