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Lifetime Extension of Software Execution Subject to Aging | IEEE Journals & Magazine | IEEE Xplore

Lifetime Extension of Software Execution Subject to Aging


Abstract:

Software aging is a phenomenon of progressive degradation of software execution environment caused by software faults. In this paper, we propose software life-extension a...Show More

Abstract:

Software aging is a phenomenon of progressive degradation of software execution environment caused by software faults. In this paper, we propose software life-extension as an operational countermeasure against software aging and present the mathematical foundations of software life-extension by means of stochastic modeling. A semi-Markov process is used to capture the behavior of a system with software life-extension and to analyze the system's availability and completion times of jobs running on it. The semi-Markov process can correctly model the time-based life-extension and allows us to derive the optimal trigger for starting life-extension in terms of system availability and mean job completion time. We also present an effective combination of software life-extension and software rejuvenation that can maximize the system availability compared with a system using either rejuvenation or software life-extension.
Published in: IEEE Transactions on Reliability ( Volume: 66, Issue: 1, March 2017)
Page(s): 123 - 134
Date of Publication: 26 October 2016

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