基于DVS技术的实时事务调度算法  

Real-time transaction scheduling algorithm based on DVS technology

作　　者：向军[1] 王晓芳[1] 李艳[1] 谢坤武[1] 

机构地区：[1]湖北民族学院信息工程学院,湖北恩施445000

出　　处：《华中科技大学学报（自然科学版）》2013年第S2期26-28,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61040006);湖北省自然科学基金资助项目(2009CDB069);湖北省教育厅中青年人才基金资助项目(Q20101904)

摘　　要：为解决分布环境下电池驱动的实时数据库系统因能量有限造成系统性能差的问题,首先分析造成系统能耗的各种因素及它们之间的联系,并为此建立能耗模型;然后提出在实时事务满足截止期比率达到要求的前提下,采用动态电压调节同步调节CPU的电压和频率,及系统负载预测等方法来降低能耗;最后提出基于能耗优化的实时事务调度算法调度系统实时事务,并进行了仿真实验,结果表明系统性能有较大提高.To solve low performance problem caused by limited energy in the application of batterypowered real-time database system in distributed environment.First,we will analyze the various factors leading to system energy consumption and the relationship among them,and construct energy consumption model.Dynamic voltage scaling to adjust the CPU voltage and frequency synchronously and workload prediction are proposed to reduce system energy consumption when the deadline miss ratio of real-time transactions is met.At last,an scheduling algorithm is proposed to schedule real-time transaction based on energy consumption optimization,and we have make simulation experiments.The experiments show that system performance has improved greatly.

关 键 词：实时数据库系统 能耗管理 动态电压调节 调度 实时事务 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]