NDLI: Analysis of inspection-based preventive maintenance in operational software systems

Content Provider	IEEE Xplore Digital Library
Author	Vaidyanathan, K. Selvamuthu, D. Trivedi, K.S.
Copyright Year	2002
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Duke Univ., Durham, NC, USA (Vaidyanathan, K.)
Abstract	Recently, the phenomenon of "software aging", one in which the state of a software system gradually degrades with time and eventually leads to performance degradation or crash/hang failure, has been reported. Preventive maintenance of operational software systems is used specifically to counteract this phenomenon. However preventive maintenance incurs an overhead in terms of downtime and cost and this must be traded off with the cost of failures to obtain maximum benefits. We present an analytical model of a software system employing inspection-based preventive maintenance, through a Markov Regenerative Process (MRGP) with a subordinated semi-Markov reward process. Furthermore, we consider preemptive-resume type transitions. The model is solved for steady state as well as transient conditions and expressions for expected downtime and expected cost are derived. Numerical examples are presented to illustrate the applicability of the models. With the help of these models, optimal strategies for preventive maintenance techniques such as "software rejuvenation" could be formulated.
Sponsorship	IEEE Comput. Soc. Tech. Committee on Distributed Process. IEEE Comput. Soc. Tech. Committee on Fault-Tolerant Comput. IFIP WG 10.4 on Dependable Comput. & Fault Tolerance IEICE Dependable Comput. Tech. Group Graduate School of Inf. Sci. & Technol., Osaka Univ
Starting Page	286
Ending Page	295
File Size	589633
Page Count	10
File Format	PDF
ISBN	0769516599
ISSN	10609857
DOI	10.1109/RELDIS.2002.1180199
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-10-13
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Preventive maintenance Software systems Costs Degradation Software performance Aging Computer crashes Analytical models Steady-state Software maintenance
Content Type	Text
Resource Type	Article
Subject	Theoretical Computer Science Computer Networks and Communications Software Hardware and Architecture

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