动态实时系统描述及其资源管理技术

Specification of Dynamic Real-time System and its Resource Management Technology

动态实时系统在设计时无法确定系统的最大负载,在运行时系统要处理的数据量和事件到达率有巨大改变,在这种情况下保证系统的实时性和耐久性很困难。本文介绍了一个系统描述语言来描述这样的系统;从系统描述中产生系统静态模型,然后动态检测系统状态形成动态模型;资源管理中间件根据系统状态管理分配资源保证系统的实时性和耐久性,资源管理技术使用了动态路径典范;并介绍了一个动态实时系统的体系结构。

Dynamic real-time systems can not determine their load in design,and may have huge variances in the data stream size and the event arrival rate,so it's hard to achieve the desired real-time QoS and survivability QoS. A system specification language is presented to describe the system. The static system model is constructed from the description of the system automatically,and is augmented dynamically with system states to produce a dynamic model. Resource management middleware maintains the timeline QoS and survivability QoS based on system states,and the middleware employs the dynamic path paradigm. Also the system architecture is presented.