An ORB Endsystem Architecture for Statically Scheduled Real-time Applications

There is increasing demand to extend object-oriented middleware to support applications with stringent quality of service (QoS) requirements. However, conventional object-oriented middleware does not define standard features for specifying or enforcing end-to-end QoS for applications with deterministic or statistical real-time requirements. This paper focuses on strategies for integrating I/O subsystems with object-oriented middleware to produce ORB endsystems for statically scheduled real-time applications. Keywords: Real-time CORBA, Object Request Broker, Quality of Service, OO Middleware, I/O Subsystem 1 Introduction Existing Object Request Broker (ORB) middleware like CORBA [1], DCOM [2], and Java RMI [3] is suitable for request /response applications with best-effort quality of service requirements. However, existing ORB middleware is not yet suited for performance-sensitive, distributed real-time applications due to (1) lack of QoS specification interfaces, (2) lack of QoS enfo..