Probabilistic schedulability analysis of harmonic multi-task systems with dual-modular temporal redundancy

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dc.contributor.authorKim, JKko
dc.contributor.authorKim, Byung Kookko
dc.date.accessioned2013-03-04T13:56:55Z-
dc.date.available2013-03-04T13:56:55Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2004-03-
dc.identifier.citationREAL-TIME SYSTEMS, v.26, pp.199 - 222-
dc.identifier.issn0922-6443-
dc.identifier.urihttp://hdl.handle.net/10203/82858-
dc.description.abstractTo improve reliability of real-time control systems, various fault-tolerance methods have been designed and implemented. We propose a highly reliable control system using modular and temporal redundancy, called dual-modular temporal redundancy (DMTR). Assuming that transient faults occur and recover with exponential probability distributions, we analyze the probabilistic schedulability of DMTR for multiple tasks with harmonic periods (DMTR-HP). After formulating a discrete-time reliability model for DMTR-HP, we formulate an efficient recursive computation algorithm for rapidly obtaining the probabilistic schedulability of the overall system. Considering the overhead for checkpointing in a DMTR-HP control system, we obtain the optimal number of subslots for maximum reliability using our DMTR-HP reliability model. In addition, we compare the reliabilities of DMTR-HP, DMTR using GCDP scheduling (DMTR-GCDP), and conventional dual-modular redundancy (DMR).-
dc.languageEnglish-
dc.publisherSPRINGER-
dc.subjectTIME REDUNDANCY-
dc.subjectRETRY POLICY-
dc.subjectRELIABILITY-
dc.subjectDESIGN-
dc.titleProbabilistic schedulability analysis of harmonic multi-task systems with dual-modular temporal redundancy-
dc.typeArticle-
dc.identifier.wosid000188942400003-
dc.identifier.scopusid2-s2.0-1842614327-
dc.type.rimsART-
dc.citation.volume26-
dc.citation.beginningpage199-
dc.citation.endingpage222-
dc.citation.publicationnameREAL-TIME SYSTEMS-
dc.identifier.doi10.1023/B:TIME.0000016130.91111.75-
dc.contributor.localauthorKim, Byung Kook-
dc.contributor.nonIdAuthorKim, JK-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorfault tolerance-
dc.subject.keywordAuthorDMTR-
dc.subject.keywordAuthorDMTR-HP-
dc.subject.keywordAuthorprobabilistic schedulability-
dc.subject.keywordAuthoroptimal number of subslots-
dc.subject.keywordPlusTIME REDUNDANCY-
dc.subject.keywordPlusRETRY POLICY-
dc.subject.keywordPlusRELIABILITY-
dc.subject.keywordPlusDESIGN-
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