Microsoft Python Language Server - Excessive Memory Usage

[falonso-caa]

Issue Type: Bug

Python Language Server uses ~16-18 GB RAM on a 24 GB RAM laptop. Causing my memory usage to hang around 95%. It's also chewing through disk with 20-40 MB/s. It's a hungry, hungry hippo.

Restarted and after 10 minutes it is at about 1.2 GB RAM with very low disk usage.

VS Code version: Code 1.26.1 (493869ee8e8a846b0855873886fc79d480d342de, 2018-08-16T18:38:57.434Z)
OS version: Windows_NT x64 10.0.17134

System Info

Item	Value
CPUs	Intel(R) Core(TM) i5-8350U CPU @ 1.70GHz (8 x 1896)
GPU Status	2d_canvas: enabled checker_imaging: disabled_off flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on native_gpu_memory_buffers: disabled_software rasterization: enabled video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled
Memory (System)	23.84GB (0.67GB free)
Process Argv	C:\Program Files\Microsoft VS Code\Code.exe
Screen Reader	no
VM	0%

Extensions (9)

Extension	Author (truncated)	Version
gc-excelviewer	Gra	2.1.26
r	Iku	0.6.1
rainbow-csv	mec	0.5.0
mssql	ms-	1.4.0
anaconda-extension-pack	ms-	1.0.0
python	ms-	2018.8.0
PowerShell	ms-	1.8.4
vscode-yaml	red	0.0.15
gitblame	wad	2.4.4

[d3r3kk]

Hi @falonso-caa, thanks for the report!

First, could you please verify for us that you are indeed running the Python Language Server and not Jedi? That is, your settings should have 'Python: Jedi Enabled' unchecked, or the settings.json file should have "python.jediEnabled": false in it.

Second, if you've verified that you are not using Jedi, could you please try capturing the information in the terminal windows and adding that information here? You can see the terminal information we request in our default issue template.

Third, if you are using the Python Language Server, what happens when you use Jedi?

How large is the codebase you are working in? Is there a way we can have a look (ie. is it on Github?).

[falonso-caa]

Hello @d3r3kk,

It does appear that I have Jedi enabled. Is the princess in another castle?

Unfortunately, the code base is proprietary so I don't think I can share details.

P.S. Thanks for the quick reply!

[d3r3kk]

Does the problem go away if you disable Jedi?

[falonso-caa]

Yes, it does appear that the problem goes away with Jedi disabled. It is pretty stable at around 500 MB RAM. Thanks for the help!

[d3r3kk]

Awesome!