memory leak in completion.py

Environment data

• VS Code version: 1.23.1
• Extension version (available under the Extensions sidebar): 2018.4.0
• OS and version: GNU/Linux, Fedora 26
• Python version (& distribution if applicable, e.g. Anaconda): 3.6.5
• Type of virtual environment used (N/A | venv | virtualenv | conda | …): N/A

Actual behavior

completion.py uses all available RAM

Expected behavior

Not using all available RAM.

Steps to reproduce:

No reproduction steps yet.

I’ve locked my computer with VSCode open with a Python project and then after unlocking I’ve noticed 100% RAM usage, quickly checked top and found the reason was completion.py script which must have been started by VSCode.

Logs

$ top -c | grep python3
24318 kblazew+  20   0 8945544 6,209g     24 D  17,5 80,7  23:22.44 /usr/bin/python3 completion.py

Script used 80.7% of available RAM which is ~6.5GiB on my machine.

[DonJayamanne]

Hi everyone, please could you try using our experimental language server. It is still in a state of development, hence the reason to opt into it. To use the new language server please:

• Open you settings.json file
• Add the setting "python.jediEnabled": false,
• You will be prompted to restart VS Code, please do so Let me know how this goes. Once again, this is a new language server we’re working on, and expect it to be better than the current language server built on top of jedi. However it is still in development. So, if you come across any bugs, please do report them as separate issues.

[DonJayamanne]

The long term solution is to make use of the new language server, i.e. move away from Jedi. And as one of you have confirmed this works with the new language server, I’ll be closing this issue.