Maximizing interval reliability in operational software system with rejuvenation
Maximizing interval reliability in operational software system with rejuvenation
复制标题
通过更新最大限度地提高运营软件系统的间隔可靠性
DOI：
10.1109/issre.2003.1251068
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Kishor S. Trivedi
中科院分区：
文献类型：
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作者：
Hiroyuki Suzuki;T. Dohi;N. Kaio;Kishor S. Trivedi
软件老化常常会影响软件系统的性能并最终导致其失败。处理暂时性软件故障的一种新方法称为软件更新，它可以被视为一种预防性和主动性的解决方案，对于抵消软件老化现象特别有用。在本文中，我们考虑在一般半马尔可夫框架中最大化区间可靠性的最优软件更新策略。我们通过分析得出最佳软件更新时序，该时序最大化极限区间可靠性或具有指数分布操作时间的区间可靠性。此外，我们以数值方式检查任意操作时间的区间可靠性的瞬态行为。我们在区间可靠性标准下的结果是一些早期工作的扩展，因为区间可靠性可以专门化为点可用性和通用可靠性函数。
Software aging often affects the performance of a software system and eventually causes it to fail. A novel approach to handle transient software failures is called software rejuvenation which can be regarded as a preventive and proactive solution that is particularly useful for counteracting the phenomenon of software aging. In this paper, we consider the optimal software rejuvenation policy maximizing the interval reliability in the general semi-Markov framework. We derive analytically the optimal software rejuvenation timing which maximizes the limiting interval reliability or the interval reliability with exponentially distributed operation times. Further, we examine numerically the transient behavior of the interval reliability at an arbitrary operation time. Our results under the interval reliability criteria are extentions of some earlier work, since the interval reliability can be specialized to the pointwise availability and the common reliability function.