网格监控体系结构的一种可执行性模型

A Performability Model for Grid Monitoring Architecture

为网格监控体系结构建立可执行性模型有助于网格监控系统的服务质量提升。因为网格环境的动态性和不可靠性,所以对网格监控体系结构建模时要从可用性和性能两方面综合考虑。讨论系统可用性、响应时间分布、事件丢失概率、公平性等问题。用随机Petri网建立网格监控体系结构的可执行性模型并讨论了模型的应用。网格监控体系结构的系统模型有一个关键特性:事件发布信息和监控事件数据由不同通道传递,在模型中重点关注这一特性。

To develop the performability model for grid monitoring architecture is helpful to enhance Quality of Service of grid monitoring system. Because of the dynamic and unreliable characters of grid environment, we must consider avariability and performance at the same time when we develop the system model for grid monitoring architecture. We discuss the issues including availability of system, response time distribution, probability of events loss, fairness. Finally we develop the performability model for grid monitoring architecture using stochastic petri nets and discuss the application of this model. There is a key feature in system model of grid monitoring architecture： event publieation information and monitoring event data must be transferred in different channels, analysis of performability model focuses on this feature.