Applications are optimized using source code patterns and performance analysis. Patterns of inefficiently coded statements are stored, and source code that includes program statements are identified. The program statements are compared with the patterns to identify program statements that are inefficiently coded. An execution of a compiled version of the source code is monitored to identify program statements that cause performance issues The identified program statements that are inefficiently coded are compared with the identified program statements that cause performance issues to determine program statements that are inefficiently coded and cause performance issues.