摘要
在便携式系统的低功耗设计中,动态电源管理(Dynamic Power Management,DPM)和动态电压调节(Dynamic Voltage Scaling,DVS)已经成为比较通用的技术,并且很多实验数据表明DVS省电性能比DPM更为优越。本文针对电压可调的处理器,在理论证明的基础上提出了一种能够跟踪工作负载需求变化,在保证给定任务组中所有任务性能的同时实现系统能耗最优化的电压调节策略EOVSP(Energy Optimal Voltage Scaling Policy)。实验结果也表明,该策略在满足系统性能要求的前提下具有比一般DPM策略更好的省电性能。
Dynamic power management （DPM） and dynamic voltage scaling （DVS） have emerged as a popular solution to reduce the power consumption of embedded and portable systems. Many experiments targeting the variable voltage processors indicate that the energy-saving performance of DVS outperforms that of DPM. In this paper, we present the DVS policy called EOVSP （Energy Optimal Voltage Scaling Policy） for Variable Voltage Processors, which can track the variance of system workload, guarantee every task performance and realize the optimality of the system power consumption. Experimental results also demonstrate that EOVSP policy is superior in power saving to normal DPM policy while meeting the performance requirements of system.
出处
《电路与系统学报》
CSCD
北大核心
2006年第5期44-50,共7页
Journal of Circuits and Systems
