| 突发性故障模式下实时任务的优先级分配策略 |
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| 引用本文： | 周正勇,阳富民,李俊,胡贯荣,涂刚,张杰.突发性故障模式下实时任务的优先级分配策略[J].计算机科学,2014,41(Z11):1-6,14. |
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| 作者姓名： | 周正勇 阳富民 李俊 胡贯荣 涂刚 张杰 |
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| 作者单位： | 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 |
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| 基金项目： | 本文受国家自然科学基金(61173049)资助 |
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| 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。
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| 关 键 词： | 容错实时系统 最坏响应时间 可调度性 突发性故障 |
Priority Assignment Strategy for Real-time System under Fault Bursts |
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| ZHOU Zheng-yong,YANG Fu-min,LI Jun,HU Guan-rong,TU Gang and ZHANG Jie.Priority Assignment Strategy for Real-time System under Fault Bursts[J].Computer Science,2014,41(Z11):1-6,14. |
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| Authors: | ZHOU Zheng-yong YANG Fu-min LI Jun HU Guan-rong TU Gang and ZHANG Jie |
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| Affiliation: | School of Computer Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China;School of Computer Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China;Wuhan Digital Engineering Research Institute,Wuhan 430074,China;School of Computer Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China;School of Computer Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China;School of Computer Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China |
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| 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. |
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| Keywords: | Fault-tolerant real-time systems Worst-case response time Scheduling analysis Fault bursts |
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