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Refined non-homogeneous markovian models for a single-server type of software system with rejuvenation

Hiroyuki OkamuraS. MiyaharaT. Dohi — 2002

RAIRO - Operations Research - Recherche Opérationnelle

Long running software systems are known to experience an aging phenomenon called software aging, one in which the accumulation of errors during the execution of software leads to performance degradation and eventually results in failure. To counteract this phenomenon a proactive fault management approach, called software rejuvenation, is particularly useful. It essentially involves gracefully terminating an application or a system and restarting it in a clean internal state. In this paper, we reconsider...

Refined non-homogeneous markovian models for a single-server type of software system with rejuvenation

Hiroyuki OkamuraS. MiyaharaT. Dohi — 2010

RAIRO - Operations Research

Long running software systems are known to experience an aging phenomenon called software aging, one in which the accumulation of errors during the execution of software leads to performance degradation and eventually results in failure. To counteract this phenomenon a proactive fault management approach, called software rejuvenation, is particularly useful. It essentially involves gracefully terminating an application or a system and restarting it in a clean internal state. In this paper, we...

The Lorenz transform approach to the optimal repair-cost limit replacement policy with imperfect repair

T. DohiF. S. OthmanN. KaioSunji Osaki — 2001

RAIRO - Operations Research - Recherche Opérationnelle

In this paper, we consider a repair-cost limit replacement problem with imperfect repair and develop a graphical method to determine the optimal repair-cost limit which minimizes the expected cost per unit time in the steady-state, using the Lorenz transform of the underlying repair-cost distribution function. The method proposed can be applied to an estimation problem of the optimal repair-cost limit from empirical repair-cost data. Numerical examples are devoted to examine asymptotic properties...

The Lorenz Transform approach to the Optimal Repair-Cost limit remplacement Policy with Imperfect Repair

T. DohiF. S. OthmanN. KaioSunji Osaki — 2010

RAIRO - Operations Research

In this paper, we consider a repair-cost limit replacement problem with imperfect repair and develop a graphical method to determine the optimal repair-cost limit which minimizes the expected cost per unit time in the steady-state, using the Lorenz transform of the underlying repair-cost distribution function. The method proposed can be applied to an estimation problem of the optimal repair-cost limit from empirical repair-cost data. Numerical examples are devoted to examine asymptotic properties...

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