%A Weichao Dang and Jianchao Zeng %T Optimization of Software Rejuvenation Policy based on State-Control-Limit %0 Journal Article %D 2018 %J Int J Performability Eng %R 10.23940/ijpe.18.02.p3.210222 %P 210-222 %V 14 %N 2 %U {https://www.ijpe-online.com/CN/abstract/article_3732.shtml} %8 2018-02-01 %X

Software Rejuvenation is a proactive software control technique used to improve computing system performance when a system suffers from software aging. In this paper, a state-control-limit-based rejuvenation policy with periodical inspection has been proposed. The steady-state system availability model has been constructed based on the semi-renewal process. The steady-state probability density of degradation system stated as a function of the inspection interval and the rejuvenation threshold have been derived. The average unavailable time of when a soft failure occurs within an inspection cycle has been taken into account to calculate the steady-state system availability. Finally, the system availability with corresponding optimal inspection time interval and rejuvenation threshold have been obtained numerically.