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Research on the Real-time Fault-tolerant Issues in Distributed System Based on CORBA--Design and Implementation of Dynamic Scheduling Scheme for Distributed System

Author: PengJian
Tutor: LiuJinDe
School: University of Electronic Science and Technology
Course: Applied Computer Technology
Keywords: Distributed Systems Real-time systems Fault-Tolerant Systems Real-time fault-tolerant Middleware CORBA End-to-end scheduling Dynamic Scheduling Service Scheduling policy
CLC: TP393.09
Type: PhD thesis
Year: 2004
Downloads: 646
Quote: 5
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For distributed systems, at home and abroad has been a long period of study. Typically use middleware solutions, to solve such a system interoperability. Developed early, people will mainly focus on cross-platform, cross-environment interoperability problems in the system, and rarely consider the system's real-time and reliability problems. In short, focus on function and ignore the performance. However, with the rapid development of communication technology and computer technology, network bandwidth and CPU speed continues to improve, the performance requirements of the distributed systems will date attention. Performance of concern in addition to real-time, as well as real-time fault-tolerant, dynamic adaptability and integration - fault tolerance. Distributed systems in order to ensure real-time, the absence of fault tolerance measures backing is obviously up to the target of less than ideal for running; Therefore, the new real-time - fault-tolerant architecture are aiming to become engaged in the research and development of mission-critical systems technology sector research priorities one. The OMG organization will be officially released in recent real time - Fault Tolerant CORBA RFP is a proof. The papers from both theoretical and practical aspects, to explore the real-time dynamic distributed systems - fault-tolerant solutions. The main work of the author of this paper is as follows: the analysis of the nature of real-time distributed systems and fault tolerance, as well as both the inevitability of integration. In previous studies based on real-time distributed systems - fault tolerant integration ideas, as well as the use of real-time - Fault Tolerant CORBA middleware solutions. The real-time extension of the middleware infrastructure in real time - the foundation for the development of fault-tolerant middleware, the authors studied the key technology for real-time CORBA middleware, developed a real-time middleware rtORB real-time performance and advanced foreign research TAO resemblance. In order to adapt to the dynamic changes of the application status, real-time CORBA environment should be introduced dynamic scheduling service. The authors propose an end-to-end two-tier model of dynamic real-time scheduling, and given its specific implementation and performance analysis. The paper discusses the key technologies in order to achieve real-time - fault-tolerant CORBA middleware, including the expansion of real-time - three-tier structure of the fault-tolerant middleware and effectively support the real-time - fault-tolerant dynamic scheduling services and algorithms. The development of a real-time - Fault Tolerant CORBA middleware prototype. It can support real-time - fault-tolerant applications, and can adapt to the dynamic changes of the applications in the distributed environment.

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