Evaluation of the DRM and the Time for Preventive Maintenance for Aging Software
作者： Salma A. Ghoneim
关键词:
摘要: An attempt to capture software aging and specify when do preventive maintenance (PM) is presented in this paper. A composite measure termed the DRM, Deteriorating Response Measure, defined. It based on analysis of deteriorating speed against time load. This characterized as follows: (1) decays with increased (2) does not increase again load decreases, indicates “loss elasticity.” The DRM mathematically formulated a queueing system model. Specifying depends decision maker's perspective manifestation aging. tried here formalize dependence. Three degrading performance metrics are defined for DRM: Decaying restored value. Increasing offset ratio (recoverability index). (3) operation interval offset. These can be used singly or aggregately maintenance. Results model testing also shown. This work part an on-line procedure that calculates indexes server type like web browser, operating system, database, helps software.
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