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Decidable and undecidable problems in schedulability analysis using timed automata

  • Pavel Krčál*
  • , Wang Yi
  • *此作品的通讯作者
  • Uppsala University

科研成果: 书/报告/会议事项章节章节同行评审

摘要

We study schedulability problems of timed systems with nonuniformly recurring computation tasks. Assume a set of real time tasks whose best and worst execution times, and deadlines are known. We use timed automata to describe the arrival patterns (and release times) of tasks. From the literature, it is known that the schedulability problem for a large class of such systems is decidable and can be checked efficiently. In this paper, we provide a summary on what is decidable and what is undecidable in schedulability analysis using timed automata. Our main technical contribution is that the schedulability problem will be undecidable if these three conditions hold: (1) the execution times of tasks are intervals, (2) a task can announce its completion time, and (3) a task can preempt another task. We show that if one of the above three conditions is dropped, the problem will be decidable. Thus our result can be used as an indication in identifying classes of timed systems that can be analysed efficiently.

源语言英语
主期刊名Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
编辑Kurt Jensen, Andreas Podelski
出版商Springer Verlag
236-250
页数15
ISBN(印刷版)354021299X, 9783540212997
DOI
出版状态已出版 - 2004
已对外发布

出版系列

姓名Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
2988
ISSN(印刷版)0302-9743
ISSN(电子版)1611-3349

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