区分服务在多层Web应用中的实现  

Differentiated Services of Multi-tier Web Applications

作　　者：胡延苏[1] 戴冠中[1] 高昂[1] 潘文平[2] 

机构地区：[1]西北工业大学自动化学院,西安710072 [2]南京航空航天大学自动化学院,南京210016

出　　处：《计算机科学》2010年第11期89-91,110,共4页Computer Science

摘　　要：通过对三层服务器的构架分析,突破了常用的传递函数方法,建立了基于区分服务的MIMO系统状态空间模型,并在此基础上应用控制理论中的极点配置和状态反馈方法设计控制器,对不同优先级在不同Web层次上进行资源分配,实现其比例延迟保证。实验证明,原系统可近似为一组低阶线性方程,且在所设计的控制器作用下可达到良好的区分效果。Based on the analysis of three-tier Web applications,a state space model of a MIMO system supported differentiated service was proposed which breaks through the commonly transfer function ways.Then the controller was designed by pole placement and state feedback of control theory to adjust the resource quotas assigned to different classes in every tier and achieve the proportional delay guarantees.The experiments demonstrate that it is feasible to approximate the system to a group of low-level linear equations and the proposed controller can hold the relationship between different classes.

关 键 词：区分服务 多层WEB应用 状态空间模型 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]