research-article

Fault-Tolerance Through Scheduling of Aperiodic Tasks in Hard Real-Time Multiprocessor Systems

Authors:

Daniel MosséAuthors Info & Claims

IEEE Transactions on Parallel and Distributed Systems, Volume 8, Issue 3

Pages 272 - 284

https://doi.org/10.1109/71.584093

Published: 01 March 1997 Publication History

Abstract

Real-time systems are being increasingly used in several applications which are time critical in nature. Fault-tolerance is an important requirement of such systems, due to the catastrophic consequences of not tolerating faults. In this paper, we study a scheme that provides fault-tolerance through scheduling in real-time multiprocessor systems. We schedule multiple copies of dynamic, aperiodic, nonpreemptive tasks in the system, and use two techniques that we call deallocation and overloading to achieve high acceptance ratio (percentage of arriving tasks scheduled by the system). This paper compares the performance of our scheme with that of other fault-tolerant scheduling schemes, and determines how much each of deallocation and overloading affects the acceptance ratio of tasks. The paper also provides a technique that can help real-time system designers determine the number of processors required to provide fault-tolerance in dynamic systems. Lastly, a formal model is developed for the analysis of systems with uniform tasks.

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Fault-Tolerance Through Scheduling of Aperiodic Tasks in Hard Real-Time Multiprocessor Systems

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Published In

cover image IEEE Transactions on Parallel and Distributed Systems

IEEE Transactions on Parallel and Distributed Systems Volume 8, Issue 3

March 1997

95 pages

ISSN:1045-9219

Editor:
Duncan H. Lawrie
Univ. of Illinois at Urbana-Champaign, Urbana

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Copyright © Copyright © 1997 IEEE. All Rights Reserved.

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IEEE Press

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Published: 01 March 1997

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https://dl.acm.org/doi/10.1016/j.micpro.2021.104312
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