Stochastic Power-efficient DVFS Scheduling of Real-time Tasks on Multicore Processors with Leakage Power Awareness
This paper proposes a power-efficient scheduling scheme that stochastically minimizes the power consumption of real-time tasks while meeting their deadlines on multicore processors. In the proposed scheme, uncertain computation amounts of given tasks are translated into probabilistic computation amounts based on their past completion amounts, and the mean power consumption of the translated probabilistic computation amounts is minimized with a finite set of discrete clock frequencies. Also, when system load is low, the proposed scheme activates a part of all available ∙제1저자 : 이관우 ∙교신저자 : 이관우 ∙투고일 : 2014. 2. 3, 심사일 : 2014. 3. 5, 게재확정일 : 2014. 3. 11. * 한성대학교 정보시스템공학과(Dept. of Information Systems Engineering, Hansung University) ※ 본 연구는 한성대학교 교내연구비 지원 과제임. 26 Journal of The Korea Society of Computer and Information April 2014 cores with unused cores powered off, considering the leakage power consumption of cores. Evaluation shows that the scheme saves up to 69% power consumption of the previous method. ▸