Sometimes DBeaver starts consuming CPU heavily using one of its threads in an infinite loop

[ask9]

Description

It leads to the call from the system library: ucrtbase.dll!configthreadlocale+0x50 At that moment, I do nothing in DBeaver. This thread will never end (looks like it is an infinite loop, I waited more than a hour and it was still in progress) Here is what I see in ProcExp:

https://github.com/user-attachments/assets/5a7cdd1d-a177-4f6a-b87c-2467836353b3

Here is thread dump:

dbeaver-thread-dump.txt

DBeaver Version

Community Edition 24.1.5-202408122322

Operating System

Windows 10

Database and driver

PostgreSQL 16 PostgreSQL JDBC Driver 42.7.2

Steps to reproduce

• open many tabs (about 20)
• work for some time in DBeaver (the whole day long)
• when fans start working due to CPU pressure, open ProcExp and check that one thread do something heavily
• you can Suspend this thread in ProcExp in order to avoid high resource consumption temporary, but the application starts unresponsive after a few seconds
• after some time you can resume the thread and the consumption proceed
• after closing/reopening the app, everything is OK for some time

Additional context

I found something interesting in log-files located in the folder: C:\Users\user\AppData\Roaming\DBeaverData\workspace6.metadata\

See how much events Datasource <*> not found in project General generated every millisecond. Could you please examine the possibility of an infinite loop over there in code?

dbeaver-debug-1724276504022.zip

[E1izabeth]

See how much events Datasource <*> not found in project General generated every millisecond. Could you please examine the possibility of an infinite loop over there in code?

This message is sent, when you open DBeaver and have script for some deleted connection. Have you moved your connections to some folders or deleted them?

[E1izabeth]

For now we can't reproduce the issue. We would appreciate to any clue how to reproduce it. Unfortunately, neither logs not thread dump contain something specific.

[ask9]

See how much events Datasource <*> not found in project General generated every millisecond. Could you please examine the possibility of an infinite loop over there in code?

This message is sent, when you open DBeaver and have script for some deleted connection. Have you moved your connections to some folders or deleted them?

Yes, I delete/recreate my connections frequently. No problem if the connections will be disconnected in this case.

[ask9]

For now we can't reproduce the issue. We would appreciate to any clue how to reproduce it. Unfortunately, neither logs not thread dump contain something specific.

I tried to find the steps.. I think it will not be possible to find out the certain steps to reproduce it. It happens rarely and without any certain action from my side.

[E1izabeth]

I see, thank you

[ask9]

I suspect the issue is only reproducible on Windows OS because the system library involved. If someone will decide to investigate it, first of all try it on Windows (not Linux/MacOS). Ideally - on the same version as on my side: Windows 10 Pro 22H2 19045.4780

And check also the version of this suspicious system file: C:\Windows\System32\ucrtbase.dll

[arhayka]

Could you please try to generate a thread dump and attach it here? Important: you should do it at the very moment when it happens. Here is the instruction: https://dbeaver.com/docs/wiki/Making-a-thread-dump/ Thank you.

[ask9]

@arhayka I've already done it (see the txt-file attached to my first message in this thread, right after the video).

[Destrolaric]

Just for now, could you try sfc /scannow in administrator CMD terminal. Just to be sure that it's not corrupted library issue.

[ask9]

@Destrolaric OK. I've done it. One component was repaired (not related to our issue) and some warnings are also presented in the log.

CBS.log