Intelliji idea is very slow in debug mode and it is running perfectly in normal mode

Question

Intelliji idea is very slow in debug mode and it is running perfectly in normal mode.

I already tried by setting the below thing in /etc/hosts file sudo nano /etc/hosts

Answer 1

Make sure that you don't use "biz.paluch.logging.gelf.logback.GelfLogbackAppender" among your logs. In my case usage of such kind of appender was the cause of drastically slow starting in debug mode.

Answer 2

In my case I just had to disable the option: "Show method returns values" Image of the option

Answer 3

Remove breakpoint from DAO interface and all work nice!

Answer 4

Remove breakpoints off your method and use them inside the method as that can cause your debug to take a very long time.

Try running IntelliJ as admin. I had this issue at work where debugging was extremely slow and running as admin actually made it a lot faster.

Method breakpoints may dramatically slow down debugging

There is a simple explanation from the IntelliJ Team: "Method breakpoints will slow down debugger a lot because of the JVM design, they are expensive to evaluate"

https://intellij-support.jetbrains.com/hc/en-us/articles/206544799-Java-slow-performance-or-hangups-when-starting-debugger-and-stepping

Answer 5

If you disable this options in Build, Execution, Deployment -> Debugger -> Data Views --> Java, things will start work faster when debugging.

Answer 6

I had the similar issue. In my case it was method breakpoints. There was just one break point on a method. My spring boot app took around 20 mins to launch. When I removed the breakpoints it took 4 seconds to launch.

I also changed the debugger settings.

1. Unchecked - Enable alternative view view for Collections classes
2. Unchecked - Enable 'toString()' object view:

but these settings didn't make a difference.