Modeling Reliability of Three Open Source Software Systems

Software plays an important role in modern society. Relying on an inaccurate software leads to fatal inconvenience to users. In order to improve the quality of the software, a set of metrics are required and one of the most widely used quality metrics is software reliability. It is considered more important than the efficiency of the software and, the development of analytical models helps in measuring software reliability. This paper analyzes the reliability of three Open Source Software Systems (OSSs), namely Eclipse, Firefox and Bugzilla, using available bug databases on them. The bugs are classified into various types based on their severity and the corresponding datasets are modeled. The results indicate that the failure occurrences of the three OSS product mostly follow Weibull model.