Nice profiling of the entire call stack trace, no log lookup needed Helps find slow methods and queries /memory leaks quickly Live debugging of a session is the icing on the cake Most projects have a development phase and then it goes for performance testing. With single user profiling done by Jprofiler and issues fixed, application stands a much better chance of withstanding performance tests. This is my opinion saves a lot of rework and last minute changes Morever developers get to see the entire call trace which helps them decide where to put logs effectively. This reduces the time taken to troubleshoot issues The live debug feature is especially useful when we have API and web services spanning several sources like in the case of market data aggregators

This is a tool which helps me to identify memory leaks. Specifically helps to identify the specific object or class that causes the memory leak.

Jprofiler is best in CPU and Memory bottleneck finding in the Java code which is difficult in the code review and unit testcases. Helps for performance testing