摘要
关于并发或分布式系统的性能评价是一个广泛研究的课题,提供有效的数学理论工具、直观的模型描述方法和有效的模型分析方法,是系统性能评价所面临的关键问题。传统的性能模型——排队网络模型已很难分析这样复杂的系统,分层排队网络(Layered Queueing Net,LQN)模型是排队网络模型的扩展,可以用来分析相互依赖任务间的冲突。介绍了分层排队网络模型的原理及研究现状,并以DBMS为例,建立了DBMS的分层排队网络模型。
Performance evaluation of concurrent or distributed system is a subject which has been extensively studied, providing an effective mathematical theory tool. intuitive description of model and the effective model analysis method is the key issue that performance evaluation of system faces, the traditional performance model-Queuing Network Model has been difficult to analyze such a complex system, Layered Queueing Net （LQN） model is the expansion of queuing network model which can be used to analyze the conflict between interdependent tasks. This paper described the principle and research of the Layered Queuing Network Model, Taking DBMS as example, it establishes the layered queueing net model of DBMS.
出处
《电脑开发与应用》
2009年第3期56-58,共3页
Computer Development & Applications
基金
国家自然科学基金项目(60773004)
山西省自然科学基金资助(2007011050)
关键词
性能评价
排队网络模型
分层排队网络模型
performance evaluation, queuing network model, layered queuing network model
