SERVICE-ORIENTED SOFTWARE AVAILABILITY MODEL WITH SERVICE DEGRADATION
In this paper, we develop a plausible software service availability model considering the degradation of system service performance and the software reliability growth process in operation. We assume that the software system has two operational states from the viewpoint of the end user: one is providing with service performance according to specification and the other is with degraded service performance. The time-dependent behavior of the system alterna ting between up and down state is described by a Markov process. This model can derive instantaneous software serv ice availability defined as the expected value of possible service processing quantity per unit time at a specified time point. Finally, we show several numerical examples of the measures to analyze the relationship between the service availability evaluation and software reliability growth characteristic.
Software service availability Service capacity Markov process Software reliability growth
Koichi Tokuno Shigeru Yamada
Department of Management of Social Systems and Civil Engineering,Graduate School of Engineering, Tottori University,4- 101,Koyama, Tottori-shi, 680-8552 Japan
国际会议
The Ninth International Conference on Industrial Management(第九届工业管理国际会议 ICIM2008)
日本大阪
英文
626-631
2008-09-16（万方平台首次上网日期，不代表论文的发表时间）