Software plays a critical role in businesses, governments and societies. To improve performance and quality of the software are important goals of software engineering. Mining data has recently emerged as a promising means to meet this goal due to two main trends: the increasing abundance of such data and its demonstrated helpfulness in solving numerous real-world problems. Poor performance costs the software industry millions of money annually in the form of lost revenue, hardware costs, damaged customer relations and decreased productivity. Performance analysis and evaluation through data mining technique will result performance improvement suggestions for software developers.