Behavioral Analysis of a Fault-Tolerant Software System with Rejuvenation(<IEICE/IEEE Joint Special Section>Autonomous Decentralized Systems)
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概要
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In recent years, considerable attention has been devoted to continuously running software systems whose performance characteristics are smoothly degrading in time. Software aging often affects the performance of a software system and eventually causes it to fail. A novel approach to handle transient software failures due to software aging is called software rejuvenation, which can be regarded as a preventive and proactive solution that is particularly useful for counteracting the aging phenomenon. In this paper, we focus on a high assurance software system with fault-tolerance and preventive rejuvenation, and analyze the stochastic behavior of such a highly critical software system. More precisely, we consider a fault-tolerant software system with two-version redundant structure and random rejuvenation schedule, and evaluate quantitatively some dependability measures like the steady-state system availability and MTTF based on the familiar Markovian analysis. In numerical examples, we examine the dependence of two fault tolerant techniques; design and environment diversity techniques, on the system dependability measures.
- 社団法人電子情報通信学会の論文
- 2005-12-01
著者
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Dohi Tadashi
Department Of Information Engineering Graduate School Of Engineering Hiroshima University
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Dohi Tadashi
Hiroshima Univ. Higashi‐hiroshima Jpn
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Rinsaka Koichiro
Department Of Information Engineering Graduate School Of Engineering Hiroshima University
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