【摘要】 首先根据分布式系统实时性评估的基本思想,结合分布式程序执行的特点,对分布式程序的实时性评估进行理论分析.然后,根据分布式程序在系统中所处的位置、程序执行时所需的数据文件和数据文件的传输路径,确定每个数据文件的最小传输时间和最大传输时间.在此基础上,计算出程序的最早响应时间和最迟响应时间,从而形成一种基于文件传输路径的分布式程序实时性评估方法.通过实例评估和模拟分析,说明了这种评估方法是有效性的.更多还原

【Abstract】 Based on the basic theory used for real-time distributed systems,a basic theory for evaluating real-time performance of distributed programs is deduced by combining with the character when distributed program executed.On the basis of these theories,we propose an approach to evaluation the real-time performance of distributed program.Our approach is based on three factors,which include the nodes on which program can be executed,the data files needed when program executes and the transmission paths of data file.The minimum of transmission time and the maximum of transmission time of each data file can be calculated out by using the three factors,and then the earliest response time and the latest response time of program can be gotten by deducing the transmission time of all data files needed when program executes.At the end of this paper,a case study is given to justify the validity of this approach.更多还原