一种确定处理器频率的节能调度策略  

An Energy-efficient Scheduling Strategy on Processors Frequency Determination

作　　者：陈专红[1] 胡虚怀[1] 

机构地区：[1]湖南理工学院计算机学院,湖南岳阳414006

出　　处：《计算机工程》2013年第8期292-294,298,共4页Computer Engineering

基　　金：湖南省自然科学基金资助项目(11JJ5038);湖南省教育厅科研基金资助重点项目(10A045)

摘　　要：在数据中心动态电压调整(DVS)节能应用中,追求低的处理器执行频率不一定能获得好的节能效果。因为利用DVS技术降低电压/频率在降低系统功耗的同时,会导致系统性能的降低,引起执行时间增加。为此,通过分析实时系统数据中心实时事务基于DVS的能耗数学模型,结合事务执行时间与处理器频率的关系,推导一种仅依赖于服务器静态特征参数的处理器能效最优初始执行频率的计算方法。实例数据的计算结果表明,使用最优初始执行频率完成事务,比单一使用最大处理器频率可以节省30%左右的能耗。The blind pursuit of low processor execution frequency does not necessarily get an effective energy saving effect in Dynamic Voltage Scaling（DVS） energy saving implementation of real-time system.The energy consumption of real-time task is not only related to the power,but also related to its execution time,to reduce voltage/frequency results in the increasing of execution time thus induces the increasing of energy consumption.In this paper,through static analysis of energy consumption model based on DVS in data center of real-time system,a new approach to determine the optimal initial execution frequency for processor to complete transactions is proposed.Instance data calculation results show that based on the optimal initial frequency to complete the transaction can save about 30% of energy consumption than just using the maximum processor frequency.

关 键 词：节能调度 实时事务调度 动态电压调整 数据中心 能耗模型 最优初始执行频率 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论]