一种采用动态电压调整的实时节能调度算法

Power-aware Scheduling Algorithm for Real-time Tasks with Dynamic Voltage Scaling

较高的能量消耗会导致处理器热量的增加及系统可靠性的降低,合理运用动态电压调整技术有效降低实时任务运行所需的能耗成为一个研究热点.提出一种动态实时节能调度算法MSF,以最大空闲时间优先调度为基础,结合动态调整技术,使得实时任务在其截止期内完成的同时能够最大限度地降低整个系统的能量消耗.实验结果表明,该方法能够充分利用任务的不同能量特性和动态空闲时间,更有效的实现节能,优于其它算法.

At present, the high power consumption of processors leads to increased heat dissipation and decreased reliability of systems. Thus, saving energy consumption through dynamic voltage scaling become a major concerns. This paper proposed a dynamic power-aware scheduling algorithm（MSF） for real-time tasks. MSF is based on the strategy of maximal slack first and combine the dynamic scaling. Therefore, not only the real-time tasks can be completed before deadline but also the global power consumption of systems will be reduced. Simulation results show that MSF can save more energy consumption by exploiting characteristic of tasks and dynamic slack time,which outperforms other major scheduling schemes.