Problems with debugger after switching from 30 to 31

[napenoni17]

Hello,

After switching from NetBeans 30 to NetBeans 31, I’m having trouble with the debugger.
When I start my application with the debugger in NetBeans 30, it runs as usual.
However, in NetBeans 31, the application starts lagging immediately, and after rendering a few GUI elements,
the CPU usage spikes sharply to 95%. When I run the app without the debugger, both NetBeans 30 and 31 perform fine.
When I switched from version 30 to 31, I imported the previous configuration, and as far as I can tell, no other settings have changed.

About the application and the system I'm running NetBeans on:

• App: Java maven project with a few other java maven projects as dependencies (Platform and target is 8), -Xmx3G
• System: Debian 12, CPU: 6-core Intel Core i5-10500T, Kernel: 6.1.0-12-amd64 x86_64, Memory: 16 GB

I’m not sure what additional information I should provide.

Maybe someone can help.

[mbien]

can you try to disable all breakpoints and check if the performance changes? (The breakpoint window has a button for that)

the CPU usage spikes sharply to 95%

I assume its one core. Is it the JVM process of NetBeans or the one your application is running in?

I think the only debugger change for NB 31 was #9285

[napenoni17]

Thank you for your reply. The application is one core. The process that spikes is the process of the application not netbeans.
I tried disabling the breakpoints. It helped. I narrowed it down to two field breakpoints from another project the running application depends on. I also tried it with NB29,30,31. They all have the same problem with the two breakpoints. So it's no NB31 problem.