计算机科学 ›› 2014, Vol. 41 ›› Issue (Z11): 1-6.

• 智能计算 •    下一篇

突发性故障模式下实时任务的优先级分配策略

周正勇,阳富民,李俊,胡贯荣,涂刚,张杰   

  1. 华中科技大学计算机科学与技术学院 武汉430074;华中科技大学计算机科学与技术学院 武汉430074;武汉数字工程研究所 武汉430074;华中科技大学计算机科学与技术学院 武汉430074;华中科技大学计算机科学与技术学院 武汉430074;华中科技大学计算机科学与技术学院 武汉430074
  • 出版日期:2018-11-14 发布日期:2018-11-14
  • 基金资助:
    本文受国家自然科学基金(61173049)资助

Priority Assignment Strategy for Real-time System under Fault Bursts

ZHOU Zheng-yong,YANG Fu-min,LI Jun,HU Guan-rong,TU Gang and ZHANG Jie   

  • Online:2018-11-14 Published:2018-11-14

摘要: 在容错实时系统中,可调度性分析是确保实时任务在限定时间内完成的重要手段。分析了突发性故障模式的可调度性问题,针对该故障模式下已有策略的不足,设计了优先级分配策略,并根据策略的性质实现了容错优先级变迁因子的搜索算法。深入的分析和实验证明,这种策略能够有效地提高系统的容错能力。

关键词: 容错实时系统,最坏响应时间,可调度性,突发性故障

Abstract: In real-time systems,schedulers must be fault tolerant to guarantee no missed deadline.Based on the analysis of worst-case response time schedulability for real-time systems under fault bursts,we found out that fault-tolerant priority assignment strategy could improve system fault resilience effectively,compared with traditional fault-tolerant strategy.Also,we presented a fault-tolerant priority configuration search algorithm for the proposed analysis.

Key words: Fault-tolerant real-time systems,Worst-case response time,Scheduling analysis,Fault bursts

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