开放式实时环境中的集成调度框架

An Integrated Scheduling Framework for Open Real-Time Environment

开放式实时环境中的多类型实时任务并存的情况给实时调度机制带来了新的需求和挑战 提出了一种适用于开放式实时环境的 3层集成调度框架 ,它基于服务器方式的实时调度理论 ,把 5种既有相关性又有功能互补特征的服务器有机的集成到统一的调度机制中 可支持多种类型的实时任务及非实时任务共存于同一系统的混合调度 ,并且根据它们的属性自动选择最合适的服务器与之搭配 相对于现有方法 ,该调度框架可支持的调度对象类型更广泛 ,易于进行服务质量控制 ,并且有良好的可扩展性 因此 。

In the open real-time environment, different kinds of real-time tasks coexist in one system. This brings new requirements and challenges to the real-time scheduling mechanism. A triple-level framework for integrated scheduling is proposed. It is based on the theory of real-time scheduling of servers. It integrates five kinds of servers that have both common characters and complementarity in their functions. The framework can schedule different kinds of real-time tasks and non-real-time tasks when they coexist in one system, and it can automatically choose the most proper kind of server to serve the tasks according to their detail properties. Compared with the approaches already existing, the framework can support more kinds of scheduling objects,control the QoS, and be extended easily. Therefore, it fits the open real-time environment better.