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IEICE TRANSACTIONS on Electronics

A Slack Reclamation Method for Reducing the Speed Fluctuations on the DVFS Real-Time Scheduling

Da-Ren CHEN, Chiun-Chieh HSU, Hon-Chan CHEN

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Summary :

Dynamic Voltage/Frequency Scaling (DVFS) allows designers to improve energy efficiency through adjusting supply voltage at runtime in order to meet the workload demand. Previous works solving real-time DVFS problems often refer to the canonical schedules with the exponential length. Other solutions for online scheduling depend on empirical or stochastic heuristics, which potentially result in frequent fluctuations of voltage/speed scaling. This paper aims at increasing the schedule predictability using period transformation in the pinwheel task model and improves the control on power-awareness by decreasing the speeds of as many tasks as possible to the same level. Experimental results show the maximum energy savings of 6% over the recent Dynamic Power Management (DPM) method and 12% over other slack reclamation algorithms.

Publication
IEICE TRANSACTIONS on Electronics Vol.E99-C No.8 pp.918-925
Publication Date
2016/08/01
Publicized
Online ISSN
1745-1353
DOI
10.1587/transele.E99.C.918
Type of Manuscript
Special Section PAPER (Special Section on Low-Power and High-Speed Chips)
Category

Authors

Da-Ren CHEN
  National Taichung University of Science and Technology
Chiun-Chieh HSU
  National Taiwan University of Science and Technology
Hon-Chan CHEN
  National Chin-Yi University of Technology

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