A software reliability growth model for component-based software incorporating debugging delay and imperfect debugging

In view of the problems and the weaknesses of component-based software (CBS) reliability modeling and analysis, and a lack of consideration for real debugging circumstance of integration testing, a CBS reliability process analysis model is proposed incorporating debugging time delay, imperfect debugging and limited debugging resources. CBS integration testing is formulated as a multi-queue multichannel and finite server queuing model (MMFSQM) to illustrate fault detection process (FDP) and fault correction process (FCP). A unified FCP is sketched, given debugging delay, the diversities of faults processing and the limitations of debugging resources. Furthermore, the impacts of imperfect debugging on fault detection and correction are explicitly elaborated, and the expressions of the cumulative number of fault detected and corrected are illustrated. Finally, the results of numerical experiments verify the effectiveness and rationality of the proposed model. By comparison, the proposed model is superior to the other models. The proposed model is closer to real CBS testing process and facilitates software engineer's quantitatively analyzing, measuring and predicting CBS reliability.