中间件服务性能建模与分析

中间件系统由于其众多的优良特性得到了广泛的应用，而处于三层模型中间层的中间件能否提供较高的处理速度是其特性得以发挥的根本保证。本文以ICETIPS项目为应用背景，针对中间件服务能力建立了多优先级非抢占M／M／n队列模型，对中间件系统的排队队列长度、消息等待时间、消息逗留时间、服务窗口数等指标进行了深入分析，并给出了一套完整的对中间件服务能力进行分析与优化的通用方法和计算公式，在中间件系统的分析设计与实现中有较高的应用价值。

Modeling and Analysis for the Service Performance of Middleware

Middleware has been used widely because of its excellent qualities based on its service performance. Aiming at the analysis and optimization for the service performance of middleware,this paper presents the nonpreemptive priority M/M/n queue model,the analysis on the queue length,wait time,remain time and service window. A general method and a set of formulas for the analysis and optimization useful in the design and implementation of the middleware system are also proposed.