Analytical Modeling of Periodically Inspected Software Rejuvenation Policy
نویسندگان
چکیده
منابع مشابه
Condition Based Maintenance of Periodically Inspected Systems
Condition based maintenance (CBM) is a powerful tool for improvement of system reliability and reduction of system downtime. This research considers CBM under which the system state is periodically observed with or without observational error, and maintenance is imperfect. System availability is maximized by determining the optimal maintenance threshold and the time interval between consecutive...
متن کاملOptimum Maintenance Policy of a Periodically Inspected System under Imperfect Repair
This paper deals with the maintenance policy of a system subject to periodical inspections aimed at detecting the occurrence of failures. After the first N−1 failure, the system undergoes an imperfect repair that brings the system back to the operating condition while the Nth failure is followed by a perfect repair restoring the unit to an as-good-as-new condition. The limiting average availabi...
متن کاملTowards Performability Modeling of Software Rejuvenation
In this paper, we discuss issues in performability modeling of \software rejuvenation," a form of software fault tolerance based on occasionally cleaning up the operational environment. System factors which play a key role in such a model are identi ed. Among these, we comment on two issues of particular interest when modeling software rejuvenation: (1) the representation of the degradation in ...
متن کاملAvailability of Periodically Inspected Systems with Markovian Wear and Shocks
We analyze a periodically inspected system with hidden failures in which the rate of wear is modulated by a continuous-time Markov chain and additional damage is induced by a Poisson shock process. We derive explicitly the system’s lifetime distribution and mean time to failure, as well as the limiting average availability. The main results are illustrated through two numerical examples.
متن کاملAnalysis of a two-level software rejuvenation policy
A two-level rejuvenation policy for software systems with degradation process is studied. Both full restarts and partial restarts are considered in this rejuvenation strategy. A semi-Markov process model is constructed, and based on its closed-form solution we obtain the system availability as a bivariate function. Then, the rejuvenation policy is analyzed to maximize the system availability. S...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Information Technology Journal
سال: 2013
ISSN: 1812-5638
DOI: 10.3923/itj.2013.1227.1232