Title :
Online energy-aware I/O device scheduling for hard real-time systems
Author :
Cheng, Hui ; Goddard, Steve
Author_Institution :
Dept. of Comput. Sci. & Eng., Nebraska Univ., Lincoln, NE
Abstract :
Much research has focused on power conservation for the processor, while power conservation for I/O devices has received little attention. In this paper, we analyze the problem of online energy-aware I/O scheduling for hard real-time systems based on the preemptive periodic task model. We propose an online energy-aware I/O device scheduling algorithm: energy-efficient device scheduling (EEDS). The EEDS algorithm utilizes device slack to perform device power state transitions to save energy, without jeopardizing temporal correctness. An evaluation of the approach shows that it yields significant energy savings with respect to no dynamic power management (DPM) techniques
Keywords :
energy conservation; processor scheduling; real-time systems; DPM techniques; EEDS algorithm; dynamic power management techniques; energy-efficient device scheduling; hard real-time systems; online energy-aware I/O device scheduling; preemptive periodic task model; Computer science; Embedded system; Energy consumption; Energy management; Power engineering and energy; Power system management; Power system modeling; Processor scheduling; Real time systems; Scheduling algorithm;
Conference_Titel :
Design, Automation and Test in Europe, 2006. DATE '06. Proceedings
Conference_Location :
Munich
Print_ISBN :
3-9810801-1-4
DOI :
10.1109/DATE.2006.243931
