IntelliJ got stuck for 5 minutes

Hello Herry,

Thank you for sending the jstack data. To help us investigate the freeze, could you please provide a few more details?

1. Jstack Timing: Was the jstack data collected during the freeze or after it had ended?
2. IDE Logs: Please upload your IDE logs. You can generate them via Help > Collect Logs and Diagnostic Data and then upload the resulting zip file to our private server and share it with us.
3. Plugins: Could you provide a list of your installed plugins, particularly any third-party or custom ones?
4. Frequency: Has this issue happened before, or was this a one-time occurrence?

We look forward to your response so we can continue our investigation.

Jstack data: Collected DURING the freeze.

IDE Logs: Upload id: 2025_09_09_dQLtmbN9KUMuxw1gW2qRgj (file: idea-logs-20250909-22381612309734898116674171.zip)

Third party plugins: BinEd - Binary/Hex Editor, Code complexity, JMH Java Microbenchmark Haress, Minecraft Development, Powershell.

Frequency: It has happened twice in the last too weeks. Each time IDEA got stuck for ~5 minutes.

Hello Herry,

Thanks for sharing the logs. We were able to identify through the idea.log file the thread dump that needs investigation. However, that thread dump folder is empty in the logs you shared. This can sometimes happen in IntelliJ IDEA, and because of it, we were not able to identify the reason. The reason wasn't captured in the jstack log you collected either. Therefore, we will need further help from you. When you re-encounter the issue, please make sure you follow the steps below to capture the correct jstack data and logs, and then immediately share them with us for investigation.

1. Find the IDE process PID. You can do this using one of the following methods:
   - In the terminal, execute the command: jps -mv
   - In Activity Monitor (open Spotlight and type "Activity Monitor"), find the IDE process and check its PID.

2. When the IDE is frozen, run the following command in the terminal to generate a thread dump:
   jstack -l <PID> > dump.txt
   Replace <PID> with your IDE process ID.
   The dump file will be saved in the directory where you ran the command. You can specify your desired save path in the command, for example: jstack -l <PID> > /Users/<USER>/Desktop/dump.txt
   Please run this command 3–5 times to collect multiple thread dumps. For example:
   jstack -l 5432 > dump1.txt
   jstack -l 5432 > dump2.txt
   …
   jstack -l 5432 > dump5.txt

   The goal is to collect 4 to 5 thread dumps. For more information on how to get a thread dump, please see this article.

3. After completing these steps, please send us the resulting thread dump files.

Afterward, please collect the IDE logs by going to Help > Collect Logs and Diagnostic Data, and then upload the resulting zip file to our private server and share it with us.

For now, we don't want you to disable any plugins for analysis because one of them could be causing the freeze and slowness, and our goal is to identify that.

We appreciate your cooperation in diagnosing this issue and look forward to your response after the issue recurs on your end.

Thanks. I'll follow the guid here next time IJ got stuck.

I'm not sure whether I should open another post, as this time it's RustRover, which gets stuck in a high frequency (about once a day) with longer time (> 20min) since I installed this tool.

However, I'm unable to use Collect Logs and Diagnostic Data feature as it's still stuck after half an hour. So I reboot RustRover first and try exporting the diagnostic data, and it gets stuck AGAIN when I'm editing my codes while Rust Rover is preparing  the diagnostic data. 

Upload id: 2025_09_11_ZXNQL4seQiMEPig6ycexLc (file: jstack-logs.zip)

Upload id: 2025_09_11_266ZdZXxkMvQFjDMDjH3VY (file: rustrover-logs-20250911-2028469204918849710700164.zip)

Hello Herry,

Could you please create a separate ticket (link to create a ticket) for the issue you’re experiencing in RustRover so that our RustRover support team can investigate this? This will help us keep it organized and separate from the IntelliJ-related issue.

Thanks. I've created a tick with the link given above.

Upload id: 2025_09_20_21PJhG3mcDs6LvwVgnnFWw (file: jstack.zip)

IJ got stuck again.

Hello Herry, thanks again for sending the logs. We couldn't identify anything specific from the jstack logs, but we did see very high CPU usage on all four of your cores.

To help us narrow down the cause of the freeze, we have a couple of follow-up questions for you. When the IDE freezes, does the rest of your computer also freeze, or is it only IntelliJ IDEA that becomes unresponsive? Could you try to open a web browser and navigate to a new page or do something else on your machine during the freeze?

Additionally, could you please capture a snapshot of your Task Manager's CPU section during the freeze? This will help us see if any other applications are using a high amount of CPU besides the IDE.

We appreciate your continued cooperation in helping us diagnose this.

> To help us narrow down the cause of the freeze, we have a couple of follow-up questions for you. When the IDE freezes, does the rest of your computer also freeze, or is it only IntelliJ IDEA that becomes unresponsive? Could you try to open a web browser and navigate to a new page or do something else on your machine during the freeze?

Everything else was OK when IDE freezed. I'm still able to open web pages or editing PowerPoint.

> Additionally, could you please capture a snapshot of your Task Manager's CPU section during the freeze? This will help us see if any other applications are using a high amount of CPU besides the IDE.

OK, I'll share several screenshots next time when IDE freezes :)