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 and add these two entries.
127.0.0.1 .local ::1 .local
But it did not work out for me.
Any help on this is highly regarded.
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.
but these settings didn't make a difference.
If you disable this options in Build, Execution, Deployment -> Debugger -> Data Views --> Java, things will start work faster when debugging.
clicked on "Mute Breakpoints" and started it and it started like as if starting in normal mode(means no any delay)
I have solved a similar problem by disabling breakpoints; it was remote debugging. I did not make any performance measurements, but it looks like it is ok to have about 10 active breakpoints, but disastrous to have about 100 of them (I guess, the breakpoint list is sent over the network).
Idea lets you to group breakpoints and disable the whole groups.
Note that a click on the wrong mouse button clears your breakpoint instead of letting you edit its condition, so be careful!
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.
In my case, slowness is specific to REST calls. After testing all of the above proposed solutions, I finally find a way to remove these slowness issues by switching my JDK from JDK 11 to JDK 8.
Note: The same slowness appears in Visual Studio Code. This seems related to JDK 11 (OpenJDK 64-Bit Server VM AdoptOpenJDK (build 11.0.10+9, mixed mode) on macOS)
In my case i had more than 100 breakpoints active and this was the cause of this issue.
I clicked Ctrl + Alt + F8 and disabled all the breakpoints.
After that i enabled few new breakpoints i needed and all was ok.
It seems that having a lot of active breakpoints causes this issue.
Removing all Interface method breakpoints will fix the long spring boot startup Idea debug run.
In my case the problem was caused by the "Threads" view. When I remove this view it becomes fast again.
When I add the Threads view, I continuously see "Collecting data..." in the threads view, it flickers every 5s where the threads list shows for a moment then it goes back to "Collecting data...". When its like this, stepping through the code is painfully slow - takes about 10s for each step.
