故障突发容错实时系统的可调度性分析

Zhengyong Zhou, Liping Pang, Y. Fumin
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引用次数: 4

摘要

突发错误模型描述了在有限的时间间隔内引起潜在随机故障的现象。我们研究了具有检查点的固定优先级任务的最差响应时间。由于检查点方案依赖于时间冗余,它们可能会导致错过最后期限,从而影响系统的正确性。本文对突发误差模型进行了精确的可调度性分析,并推导出最优的检查点数目。我们还探讨了容错优先级分配策略,以获得最有效的方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Schedulability analysis for Fault tolerance real-time system under fault bursts
Burst error model describes phenomena which cause potentially random faults over a bounded time interval. We study the worst response time for tasks under fixed-priority with checkpoints. Since checkpointing schemes depend on time redundancy, they could affect the correctness of the system by causing deadlines to be missed. In this paper, we provide an exact schedulability analysis for burst error model and derive the optimal number of checkpoints. We also explore the fault-tolerant priority assignment policy to get the most efficient scheme.
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