lots of wmic process with high cpu usage after upgrading to 1.21

[yingang]

Environment data

• VS Code version: 1.21
• Extension version (available under the Extensions sidebar): 2018.2.1
• OS and version: Windows_NT x64 10.0.14393
• Python version: 3.6.4
• Type of virtual environment used (if applicable): N/A
• Relevant/affected Python packages and their versions: N/A

Actual behavior

I upgraded the vscode to 1.21 yesterday, then my laptop would start to respond slower and slower when vscode is ruuning. By checking task manager, I found that there are lots of wmic process like: wmic process 7416 get workingsetsize,usermodetime,kernelmodetime, in which the PID 7416 points to a python process: python completion.py.

After disable the python extension and restart the vscode, the problem won't happen again.

The Python extension (ms-python.python) I was using was released 2018.2.1, so I think it's a problem between the latest 1.21 release with the extension?

Expected behavior

no high cpu usage just for an idle vscode.

Steps to reproduce:

1. Please see the 'Actual behavior' part

Logs

Output for Python in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Python)

N/A (since there is no need to do anything additional to reproduce the problem)

Output from Console under the Developer Tools panel (toggle Developer Tools on under Help)

N/A (since there is no need to do anything additional to reproduce the problem)

[MikhailArkhipov]

Sounds like pidusage package we use to determine Jedi RAM consumption. We may want to check if pidusage.stat(this.proc.pid, async (err, result) actually returned before initiating another call. Looks like the call may get stuck.

[StinGer-ShoGuN]

I have the exact same problem, but with VS Code 1.19.2 the Python 2018.2.1 and both Python 3.6.4 (set as default interpreter in VSCode) and 2.7.14 installed. Everything is on Windows 7 64 bits.