How to profile Java applications?

Question

Java

Prompt literature on the topic of profiling java applications, for example, using VisualVM, Java Mission Control.

Answer 1

From the literature there is a fresh book Java Performance. In addition to it, just install YourKit, run the application, poke it, or run a load test. Look at the graphs, everything is pretty obvious there. Same with VisualVM.

Answer 2

Try running under flight recorder. If it hangs, then it could be a deadlock or some other kind of problem with threads, where a thread waits indefinitely.