Java - Profiler

https://visualvm.github.io/ (Idea plugin)

https://code.google.com/archive/p/lightweight-java-profiler/

Async Profiler: a CPU and memory profiling tool for Linux and macOS.

Java Flight Recorder: a CPU tool provided by Oracle available on Linux, macOS, and Windows. Java Flight Recorder (JFR) is a monitoring tool that collects information about the events (pieces of data) in a particular instant of time in a Java Virtual Machine during the execution of an application.

https://netbeans.org/kb/docs/java/profiler-intro.html

Flame Graph

https://www.jetbrains.com/help/idea/cpu-profiler.html