High CPU usages

[sagargg]

Hi, Suddenly, over the past few days, I've noticed my laptop heating up too quickly. When I check the CPU, some bash processes are using a significant amount of CPU. Upon more deeper check, I found that it is due to the VSCode Pylance extension. If I disable it, the issue goes away, but as soon as I enable it, CPU usage goes up.

I even tried reinstalling VSCode and installing different versions of Pylance, including the pre-release and the latest one, but the issue persists. By the way, I also tried disabling indexing with "python.analysis.indexing": false, but the issue persists.

Vscode version

Version: 1.91.1 (Universal)
Commit: f1e16e1e6214d7c44d078b1f0607b2388f29d729
Date: 2024-07-09T22:07:54.982Z
Electron: 29.4.0
ElectronBuildId: 9728852
Chromium: 122.0.6261.156
Node.js: 20.9.0
V8: 12.2.281.27-electron.0
OS: Darwin arm64 23.5.0

Extension versions

Pylance -v2024.4.1
Python- v2024.10.0

I would greatly appreciate any help. thanks

[rchiodo]

Thanks for the issue. We actually have a command you can run that will tell us what the pylance extension is doing:

If you run that command it will generate a CPU profile of our different threads and we can see what we were busy doing.

I'd recommend updating to the latest version of Pylance first though.

Additionally the logs as described here should indicate what Pylance is doing as well:
https://github.com/microsoft/pylance-release/blob/main/TROUBLESHOOTING.md#filing-an-issue

[sagargg]

@rchiodo it seems fine on the cpu profile, sharing here screeshots.

When I check the VS Code process explorer, I see that the command bash /opt/homebrew/Cellar/pyenv/2.4.8/libexec/pyenv-which python is running too frequently and consuming a lot of CPU. When I disable the extension, it goes away.

[sagargg]

I have removed the json-language-feature extension. Now, the load has dropped significantly, but the ms-python.python-2024.10.0-darwin-arm64 process is still consuming resources.

[sagargg]

I managed to fix it. I've reinstalled pyenv, and it's resolved now.
Thanks for the help.

[sagargg]

Reopening the issue as it still persists. I can confirm this is more related to the Python extension. This is what i got in vs code process exploerer.

[rchiodo]

I might be misunderstanding your process hierarchy but this looks like the python extension, not the pylance extension.

[DonJayamanne]

@sagargg thank you for filing this issue and sorry you are running into this.
@karthiknadig any idea why pet is running in stable version of VS Code and Stable Python?
The version installed is Python- v2024.10.0

@sagargg Please can you install the latest pre-release version of the Python extension
This should be fixed in the pre-release version today.

• Open the extensions page, search for Python and click the button Switch to Pre-Release Version
• Upon installing the pre-you might have to restart the extension host (please do so, or reload VS Code)
• The latest pre-release version is 2024.11.2024****

If you still run into these issues, please can you share the logs from the Python Locator

• Use the command Python: Show Output
• Then from the drop down select, Python Locator and copy all of the logs

[karthiknadig]

We run pet in parallel to JS discovery to see if anything is missed in pet.

[sagargg]

Hi @DonJayamanne @karthiknadig Thank you so much for getting back to me about the issue. I have installed the pre-release version of Python as you suggested, but the issue still persists.

This is the log i got from locator.

2024-07-26 07:08:05.702 [info] Starting Python Locator /Users/sagarg/.vscode/extensions/ms-python.python-2024.11.2024072502-darwin-arm64/python-env-tools/bin/pet server
2024-07-26 07:08:05.756 [info] Discovered manager: (Pyenv) /opt/homebrew/bin/pyenv
2024-07-26 07:08:05.781 [info] Discovered env: /usr/local/bin/python3
2024-07-26 07:08:05.782 [info] Discovered env: /usr/bin/python3
2024-07-26 07:08:05.785 [info] Discovered env: /Users/sagarg/.pyenv/versions/sigma2/bin/python
2024-07-26 07:08:05.785 [info] Discovered env: /Users/sagarg/.pyenv/versions/3.10.12/bin/python
2024-07-26 07:08:05.787 [info] Discovered env: /opt/homebrew/bin/python3
2024-07-26 07:08:05.789 [info] Discovered env: /opt/homebrew/bin/python3.11
2024-07-26 07:08:05.821 [info] Resolved /opt/homebrew/bin/python3
2024-07-26 07:08:05.822 [info] Resolved /opt/homebrew/bin/python3.11