DocumentCode :
2371957
Title :
Energy-driven proportional fair scheduling for industrial measurement devices
Author :
Bruns, F. ; Bruggemann, S. ; Kuschnerus, D. ; Bilgic, A.
Author_Institution :
Ruhr Univ. - Bochum, Bochum, Germany
fYear :
2013
fDate :
9-11 April 2013
Firstpage :
195
Lastpage :
204
Abstract :
Real-time scheduling in systems with energy or power constraints is challenging. Especially when a mixture of real-time and best effort tasks exist, it is difficult to guarantee that all deadlines are met and at the same time that the system does not run out of energy. This is the case for industrial instrumentation for hazardous areas, such as explosive atmospheres. A frequently used method of protection against explosion is intrinsic safety. That means, the power supply as well as the energy that is stored in the device is kept below a critical threshold. As a result, energy is a much scarcer resource than processing time in this class of systems. Therefore, it is appropriate to base the scheduling decision on the available and the consumed energy instead of the processing time. In this work, we adapt the Earliest-Eligible-Virtual-Deadline-First algorithm (EEVDF) for energy-driven scheduling using dynamic power management. The resulting system is hard real-time capable, takes the energy consumption of peripherals and sensors into account and utilizes slack energy efficiently and predictably. Since the scheduler guarantees the availability of sufficient energy for real-time tasks, the design of the system is significantly simplified.
Keywords :
energy consumption; energy harvesting; explosion protection; hazardous areas; power supplies to apparatus; scheduling; EEVDF; consumed energy; critical threshold; dynamic power management; earliest-eligible-virtual-deadline-first algorithm; energy constraint; energy consumption; energy-driven proportional fair scheduling; energy-driven scheduling; explosion protection; explosive atmospheres; hazardous areas; industrial instrumentation; industrial measurement devices; intrinsic safety; power constraint; power supply; processing time; real-time scheduling; real-time tasks; resulting system; scheduling decision; system design; Energy measurement; Job shop scheduling; Power demand; Processor scheduling; Real-time systems; Sensors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Real-Time and Embedded Technology and Applications Symposium (RTAS), 2013 IEEE 19th
Conference_Location :
Philadelphia, PA
ISSN :
1080-1812
Print_ISBN :
978-1-4799-0186-9
Electronic_ISBN :
1080-1812
Type :
conf
DOI :
10.1109/RTAS.2013.6531092
Filename :
6531092
Link To Document :
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