实时系统中基于DVS与Cache划分技术的节能研究  

Energy Minimization Using Dynamic Voltage Scaling and Cache Partition in Real-Time Systems

作　　者：邓庆绪[1] 程清廉[1] 孔繁鑫[1] 汪嘉汉[1] 

机构地区：[1]东北大学信息科学与工程学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2011年第12期1704-1708,共5页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(60973017);中央高校基本科研业务费专项资金资助项目(N100604010;N100204001)

摘　　要：DVS(动态电压调度)和cache划分是用来节约嵌入式系统能耗的技术.两种技术的结合会具有更好的节能效果,而且有cache划分的其他优点,关键问题是如何为每个任务确定执行时的电压和cache大小来使系统能耗最小.在实时嵌入式系统中针对这一问题,提出了一个多项式时间复杂度算法.实验对比了多组测试集在不同算法下的能耗,结果表明,本算法在满足实时性约束条件下有效地降低系统能耗.DVS（dynamic voltage scaling） and cache partition are two technologies aimed at reducing embedded systems＇ energy consumption.The combination of the two techniques will not only make a better energy saving,but also have other advantages of cache partition.The key issue is how to determine the voltage and cache size for each task to minimize the energy consumption.In real-time embedded systems,on this issue,a polynomial time complexity algorithm is proposed.Experiments compared the energy consumption of multiple test sets under different algorithms,and results show that the algorithm can effectively reduce the energy consumption under the real-time constraint.

关 键 词：实时嵌入系统 节能 CACHE划分 动态电压调度 

分 类 号：TP316.2[自动化与计算机技术—计算机软件与理论]