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Dynamic scheduling in the presence of faults : specification and verification
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Janowski, Tomasz and Joseph, Mathai (1996) Dynamic scheduling in the presence of faults : specification and verification. University of Warwick. Department of Computer Science. (Department of Computer Science research report). (Unpublished)
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Abstract
A distributed real-time program is usually executed on a limited set of hardware resources and is required to satisfy timing constraints, despite anticipated hardware failures. Static analysis of the timing properties of such programs is often infeasible. This paper shows how to formally reason about these programs when scheduling decisions are made on-line and take into account deadlines, load and hardware failures. We use Timed CCS as a process description language, define a language to describe anticipated faults and apply a version of 5-calculus to specify and verify timing properties. This allows the property of schedulability to be the outcome of an equation-solving problem. And unlike conventional reasoning, the logic is fault-monotonic: if correctness is proved for a number of faults, correctness for any subset of these faults is guaranteed.
| Item Type: | Report | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software | ||||
| Divisions: | Faculty of Science > Computer Science | ||||
| Library of Congress Subject Headings (LCSH): | Real-time programming, Computer scheduling -- Mathematical models | ||||
| Series Name: | Department of Computer Science research report | ||||
| Publisher: | University of Warwick. Department of Computer Science | ||||
| Official Date: | March 1996 | ||||
| Dates: |
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| Number: | Number 301 | ||||
| Number of Pages: | 18 | ||||
| DOI: | CS-RR-301 | ||||
| Institution: | University of Warwick | ||||
| Theses Department: | Department of Computer Science | ||||
| Status: | Not Peer Reviewed | ||||
| Publication Status: | Unpublished | ||||
| Publisher Statement: | T. Janowski and M. Joseph, “Dynamic Scheduling in the Presence of Faults: Specification and Verification”, <i>Proceedings of the 4th FTRTFT Symposium</i>, Sweden, Lecture Notes in Computer Science 1135, Springer-Verlag, pp. 279-297 (1996) | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC) | ||||
| Grant number: | GR/H39499 (EPSRC) | ||||
| Version or Related Resource: | Janowski, T. and Joseph, M. (1996). Dynamic scheduling in the presence of faults : specification and verification. In: Jonsson, B. and Parrow, J., (eds.) Formal techniques in real-time and fault-tolerant systems. Lecture notes in computer science, 1135. Berlin: Springer, pp. 279-297. | ||||
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