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Issue No. 04 - April (2010 vol. 21)
ISSN: 1045-9219
pp: 506-519
Pablo Basanta-Val , Universidad Carlos III de Madrid, Madrid
Iria Estévez-Ayres , Universidad Carlos III de Madrid, Madrid
Marisol García-Valls , Universidad Carlos III de Madrid, Madrid
Luis Almeida , Universidade do Porto, Porto
Current trends in real-time systems identify Java as a new alternative to develop both centralized and distributed real-time systems. Many efforts have been devoted to develop the Real-Time Specification for Java (RTSJ), and there is substantial ongoing activity to produce a straightforward and valuable Distributed Real-Time Specification for Java (DRTSJ). The current paper provides a contribution to this latter activity defining, from different angles, a synchronous scheduling service aligned with principles of some popular real-time architectures. This service orchestrates the system in such a way that it provides end-to-end guarantees in the distributed transactions, guaranteeing their timely execution across the network and nodes. The service is described from two points of view: the system one, characterizing a portable model; and the programmer one, defining a distributed object-oriented implementation of a model based on Real-Time Remote Method Invocation (RTRMI). Finally, it also presents results of an implementation carried out to judge the efficiency of the service, offering a preliminary predictability and performance assessment of a distributed real-time Java technology.
Real time, synchronous scheduling, distributed real-time Java, RTRMI, RTSJ.

I. Estévez-Ayres, P. Basanta-Val, M. García-Valls and L. Almeida, "A Synchronous Scheduling Service for Distributed Real-Time Java," in IEEE Transactions on Parallel & Distributed Systems, vol. 21, no. , pp. 506-519, 2009.
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