Stuck at analyzing in background and causing high cpu load

[kaushall]

Environment data

• VS Code version: 1.36.0 (Stable Channel)
• Extension version (ms-python.python): 2019.6.22090
• OS and version: Ubuntu 18.04 LTS
• Python version (& distribution if applicable, e.g. Anaconda): 2.7.15
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): virtualenv

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Logs

User belongs to experiment group 'AlwaysDisplayTestExplorer - control'
Starting Microsoft Python language server.
[Info - 10:33:32 AM] Analysis cache path: /home/kaushal/.cache/Microsoft/Python Language Server
[Info - 10:33:32 AM] GetCurrentSearchPaths /home/kaushal/microfinance/venv/bin/python
[Info - 10:33:33 AM] Interpreter search paths:
[Info - 10:33:33 AM] /home/kaushal/microfinance/venv/lib/python2.7
[Info - 10:33:33 AM] /home/kaushal/microfinance/venv/lib/python2.7/lib-dynload
[Info - 10:33:33 AM] /usr/lib/python2.7
[Info - 10:33:33 AM] /usr/lib/python2.7/plat-x86_64-linux-gnu
[Info - 10:33:33 AM] /usr/lib/python2.7/lib-tk
[Info - 10:33:33 AM] /home/kaushal/microfinance/venv/local/lib/python2.7/site-packages
[Info - 10:33:33 AM] /home/kaushal/microfinance/venv/lib/python2.7/site-packages
[Info - 10:33:33 AM] User search paths:
[Info - 10:33:35 AM] Microsoft Python Language Server version 0.3.21.0
[Info - 10:33:35 AM] Initializing for /home/kaushal/microfinance/venv/bin/python
.
.
.
Analysis of pandas.core.dtypes.dtypes(Library) completed in 5.9831 ms.
Analysis of pandas.core.dtypes.api(Library) completed in 0.7383 ms.
Analysis of pandas.io.json.table_schema(Library) completed in 1.6775 ms.
Analysis of pandas.core.indexing(Library) completed in 32.862 ms.
Analysis of pandas.util.testing(Library) completed in 49.5013 ms.
Analysis of pandas.core.sorting(Library) completed in 12.6855 ms.
Analysis of pandas.plotting._misc(Library) completed in 12.8782 ms.
Analysis of pandas.testing(Library) completed in 0.1046 ms.
Analysis of pandas.core.algorithms(Library) completed in 34.2249 ms.
Analysis of pandas.core.base(Library) completed in 21.2535 ms.
Analysis of pandas.core.missing(Library) completed in 21.3684 ms.
Analysis of pandas.core.util.hashing(Library) completed in 6.393 ms.
Analysis of pandas.core.indexes.frozen(Library) completed in 5.9272 ms.
Analysis of pandas.io.formats.format(Library) completed in 63.51 ms.
Analysis of pandas.core.internals(Library) completed in 101.1854 ms.

Screenshot

[raaaaaymond]

Yep. I was having the same problem before. It was resolved for a while by some updates, and now I'm having the same problem again immediately after updating to 1.36. My environment is:

VSCode 1.36.0
Server version 0.3.20.0
Python extension version 2019.6.22090
MacOS 10.14.5
Python 3.7.2 (via Pyenv, no virtual environment)

[jakebailey]

I'm not sure this could be related to any VS Code update; the same version of the language server would be downloaded by any version of VS Code (currently 0.3.20). This is likely something else.

[jakebailey]

We just built 0.3.22, which is available in the beta/daily channels. It contains some fixes which we believe will help solve some of the leaks. You can set this and reload to update:

"python.analysis.downloadChannel": "beta"

[kaushall]

@jakebailey

I'm still facing this issue.

Current extension version (ms-python.python): 2019.6.24221

[kaushall]

Here is the version of language server,

[Info - 10:39:46 AM] Microsoft Python Language Server version 0.3.22.0
[Info - 10:39:46 AM] Initializing for /home/kaushal/microfinance/venv/bin/python

[AlexanderSher]

Do you have this repro on single unsaved document?

[kaushall]

No, I've closed the Python file just for screenshot purpose.

@AlexanderSher

[jakebailey]

To be clear, we are asking for the code and installed package list that triggers this problem; it's not easy to fix something we can't reproduce and debug.

[AlexanderSher]

Ok, so looks like we have a bug with six.moves: #746
But it doesn't hang anything by itself. @kaushall, do you have a file with a minimal repro or it requires a specific project?

[kaushall]

I understand your concern and I'll try to provide maximum details I can. @jakebailey

@AlexanderSher It was working fine before the last update of the language server.

do you have a file with a minimal repro or it requires a specific project?
No, ,maybe it's specific to project, because whichever file I open it will stuck randomly at analysis stage. Sometime it will stuck on Pandas library and sometime on Six library.

How it is reproduced?

Open vs code >> open project >> select python file >> After this it will activate extension and on analysis stage it will stuck.

[AlexanderSher]

Can you add a new python file to your project with only import pandas, and attach full log as a file to the bug?

[kaushall]

Alright, Provide me few minutes. @AlexanderSher

[kaushall]

@AlexanderSher I tried with your instruction and analysis completed successfully this time.