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针对周期任务,考虑通用的功耗模型,结合动态电压缩放技术和动态功耗管理技术,提出了基于平均空闲时间分配的低功耗调度算法.该算法是两阶段的调度算法,离线阶段计算静态运行速度,回收静态空闲时间;在线阶段回收动态空闲时间,调节处理器的运行速度,并适时地利用动态功耗管理技术关闭处理器,以降低处理器能耗.仿真实验表明所提的算法比使用基于贪婪空闲时间分配的DRA算法平均节约大约6.55%的能耗.
Considering the general power consumption model and the dynamic voltage scaling technology and dynamic power management technology, a low power scheduling algorithm based on average idle time allocation is proposed for periodic tasks. The algorithm is a two-stage scheduling algorithm, and the offline phase is used to calculate the static Speed and reclaims the static idle time.The dynamic idle time is reclaimed in the online phase to regulate the running speed of the processor and the dynamic power management technology is used to shut down the processor in time to reduce the processor energy consumption.The simulation results show that the proposed algorithm Using DRA algorithms based on greedy free time allocations saves an average of about 6.55% in energy consumption.