Performance Analyzer provides insight into the behavior of your application to enable you to find problem areas in your code. Performance Analyzer identifies which functions, code segments, and source lines are using the most system resources. Performance Analyzer can profile single-threaded, multithreaded, and multi-process applications, then present the profiling data to help you identify where you can improve your application's performance.
The Performance Analyzer consists of a set of commands and tools including: the collect utility, which gathers profiling data on user-level programs; the er_kernel utility, which gathers profiling data on the Oracle Solaris kernel; the er_print utility which presents profiling information in text form; and the Performance Analyzer GUI, which presents profiling information graphically.
Thread Analyzer is a related tool that enables you to focus on multithreading problems.
For more information, please refer to Oracle Developer Studio 12.5: Performance Analyzer and Oracle Developer Studio 12.5: Performance Analyzer Tutorials.