R. Friedman and D. Laor (Israel)
Soft real-time, group communication, reliable delivery, fault-tolerance, modular software design
RT-Ensemble is an enhancement of the Ensemble group communication system to support soft real-time properties. Ensemble is architected in a layered, modular approach, where the complex group communication protocols are decomposed into small, simple, layers of code. This ensures flexibility, simplicity, ease of maintenance, extendibility, and maximal code reuse. The new system enjoys all the above benefits of Ensemble, while providing soft real-time guarantees to the application. This paper reports on RT Ensemble’s unique architecture, interfaces, scheduling pol icy, and its use of ¡-protocols, that together achieve these goals. A performance analysis of the system is also presented.
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