Study On Fault-Tolerance Mechanism And Realization In Real-Time Distributed Computer Systems

The view point for real time system needs the function of fault tolerance has been approved widely by the researchers in the domain of real time system and fault tolerance. At the same time, the extensive application prospect of distributed management and control, a large amount of developing and using a variety of distributed software and hardware system, and the distributed system's advantages of module,parallelism, and self-government also drive people to spend more energy to study the distributed fault tolerance system.Combine in the recovery block scheme in software fault-tolerance ,author introduces the correlative concepts of real time, fault tolerance and distributed system, and expounds the distributed process environment on the base of recovery block. According to the requirement of the real time systemFault tolerance mode, designs the distributed fault tolerance scheme.realize the fault tolerance. From the very basic fault tolerance mode -- Pair of self-checking processing nodes mode to develop the Distributed Recovery Block scheme,and then develop to the Adaptive Distributed Recovery Block scheme and Extended Distributed Recovery Blocks scheme.Design the network routing algorithm with the Distributed Recovery Block scheme.This paper discussed the application of Distributed real time fault tolerance used in the network routing. Analysis various fault case of routing scheme.For some algorithm,the text has some emulations and test guaranteesThe system's high-reliability, high-usability and real time's requirement, and has extensive application prospect.