Intellij Debugger slow: Method breakpoints may dramatically slow down debugging

Question

When I start intellij debugger, it comes the the hint you can see in the screenshot. the debugger takes a lot of time to start. How to solve this problem?

Answer 1

From the JetBrains Team: "Method breakpoints will slow down debugger a lot because of the JVM design, they are expensive to evaluate. Remove method breakpoints and consider using the regular line breakpoints.". See more.

To make the long story short, it seems that the root issue is that Method Breakpoints are implemented by using JPDA's Method Entry & Method Exit feature. This implementation requires the JVM to fire an event each time any thread enters any method and when any thread exits any method.