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Extending a task allocation algorithm for graceful degradation of real-time distributed embedded systems
University of York, UK.
University of York, UK.ORCID iD: 0000-0003-2415-8219
2008 (English)In: Proceedings - Real-Time Systems Symposium 2008, 2008, 270-279 p.Conference paper (Refereed)
Abstract [en]

Previous research which has considered task allocation and fault-tolerance together has concentrated on constructing schedules which accommodate a fixed number of redundant tasks. Often, all faults are treated as being equally severe. There is little work which combines taskallocation with architectural level fault-tolerance issues such as the number of replicas to use and how they should be configured, both of which are tackled by this work. An accepted method for assessing the impact of a combination of faults is to build a system utility model which can be used to assess how the system degrades when omponents fail. The key challenge addressed here is how to design objective functions based on a utility model which can be incorporated into a search algorithm in order to optimise fault-tolerance properties. Other issues such as how to extend the local search neighbourhood and balance objectives with schedulability constraints are also discussed. 

Place, publisher, year, edition, pages
2008. 270-279 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:mdh:diva-23775DOI: 10.1109/RTSS.2008.24Scopus ID: 2-s2.0-67249091389ISBN: 9780769534770 (print)OAI: oai:DiVA.org:mdh-23775DiVA: diva2:682455
Conference
2008 Real-Time Systems Symposium, RTSS 2008; Barcelona; Spain; 30 November 2008 through 3 December 2008
Available from: 2013-12-27 Created: 2013-12-19 Last updated: 2015-07-31Bibliographically approved

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CiteExportLink to record
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Cite
Citation style
  • apa
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Language
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Output format
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