Extension causes high cpu load

[spopp]

• Issue Type: Performance
• Extension Name: python
• Extension Version: 2018.12.1
• OS Version: Linux x64 4.10.0-38-generic
• VSCode version: 1.30.2

Click on in imported class name - and drop on "Go to Definition" - on a definition it does not know about because I am opening a folder on a remote machine, and MS Code does not know how to find..

⚠️ Make sure to attach this file from your home-directory: /home/spopp/ms-python.python-unresponsive.cpuprofile.txt ⚠️
ms-python.python-unresponsive.cpuprofile.txt

Find more details here: https://github.com/Microsoft/vscode/wiki/Explain:-extension-causes-high-cpu-load

[brettcannon]

Is this with the language server or Jedi?

[spopp]

The python extension is ms-python.python - repository - https://github.com/Microsoft/vscode-python.
I do not know about language server or Jedi, but will investigate if you let me know how.

I'm running MS Code on a Linux machine and I was using a sftp connection to a remote server - and editing a file over that connection. I did not activate the python virtual environment on the remote machine before I started editing. That is the reason the IDE could not resolve all definitions. This would be the reason that "Go to Definition" should not have worked. It would be better if that task failed quickly with a Not Found message.

[gramster]

In the settings for the Python extension, is the "Jedi Enabled" checkbox set or cleared?

[spopp]

The "Jedi Enabled" checkbox is set

[brettcannon]

The profile says that it's stat calls which are taking about 40% of the time which is in line with mounting a remote file system.

@spopp when you say "[VS Code] does not know how to find", are you saying the module isn't available and so there's no chance to find it, or just that it's taking too long to find?

[spopp]

My apologies for replying so late. There is no chance of finding the code.

The remote machine has a code base that depends on pip installs into a virtual environment.
The remote application works because the virtual environment is activated before the application is run.

Steps:

1. • install virtualenv
2. • setup.sh:

#!/bin/bash

# create a project using a virtual environment
[[ -d .env ]] || virtualenv .env --python=python3 --no-site-packages

# Activate the virtual environment
export APPDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
export PYTHONPATH=$PYTHONPATH:$APPDIR
source $APPDIR/venv/bin/activate

# pip install into virtual environment (no sudo required)
# Where package xxxx does not exist on the current machine
# so can not be found outside the activated virtual environment
pip install xxxx

I sometimes attach to the remote file system using sftp, then use Visual Studio to edit (adding diagnostics code). The virtual environment will never be activated using sftp. There is no chance of finding the code - no chance that "Go to Definition" will work. It's not always obvious which definitions can be found (in the code) and which ones are in the virtual environment without digging deeper, so a quick response from "Go to Definition" would be useful - perhaps a user settable time limit.

[brettcannon]

The extension expects the source to be available, so it not functioning as expected when the source isn't available isn't surprising. I think you want our remote editing scenario from #79.

[spopp]

Your remote editing scenario from #79<#79>? - is locked. brettcannon commented on Sep 24, 2018 We are going to lock this issue as no one has a convenient work-around to share with people at the moment and to keep notifications down to just to updates we may share in the future. I will say that we are actively working on a design to solve this with the VS Code team itself. I can't give an ETA since this is a cross-team collaboration and the work isn't finished yet, but please rest assured we are not ignoring this feature request. Stephen Popp | Sr. Software Engineer 1 (315) 863-3517 Spectrum|> | Navisite ENTERPRISE

…

________________________________ From: Brett Cannon <[email protected]> Sent: Monday, March 4, 2019 7:52 PM To: Microsoft/vscode-python Cc: Popp, Stephen P; Mention Subject: Re: [Microsoft/vscode-python] Extension causes high cpu load (#3963) The extension expects the source to be available, so it not functioning as expected when the source isn't available isn't surprising. I think you want our remote editing scenario from #79<#79>. - You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub<#3963 (comment)>, or mute the thread<https://github.com/notifications/unsubscribe-auth/ABbz7TFQH2QGaxf1VJ5MwZHT_ss6RMlqks5vTb_ngaJpZM4Z7gGN>.

[brettcannon]

@spopp Yep, it's locked for the reasons you cited. My point is you can follow that issue if you want as that's how we plan to solve your problem.