Performance Issues with VScode and Typescript

[Morphexe]

Issue Type: Bug

I have trouble with vscode, this hapeens quite frequently and after open/close it goes away for a few minutes, sometimes over a couple of hours.

Vscode intellisense and even typings lags like hell, I can see the characters being typing slowly, also its using HUGE ammounts of ram for GPU rendering.
I have caught vscode hogging around 8GB of ram, although it was debugging, but I still feel thats too much.

I can't seem to pin point what exactly is causing this, I have tried without extentions and eventually it all does the same.

Attached is a print of my process explorer where you can see that the GPU process is hogging around 1GB, and so is TSServer. Notice that although I am currently on a surface pro, this happens in my own Desktop which has a 1080GTX and a 16gb Ram with Ryzen 1700. So something else is causing this.

On a side note, the project is not that big, it has around 2000 lines across 20ish files.

Any ideas on how to debug this?

VS Code version: Code 1.33.1 (51b0b28, 2019-04-11T08:27:14.102Z)
OS version: Windows_NT x64 10.0.17134

Process Explorer

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz (8 x 2112)
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 surface_synchronization: enabled_on video_decode: enabled webgl: enabled webgl2: enabled
Memory (System)	15.93GB (4.82GB free)
Process Argv	C:\Users\Something\Something\Something\Something\Something.ClientApp
Screen Reader	no
VM	0%

Extensions (21)

Extension	Author (truncated)	Version
rainbow-brackets	2gu	0.0.6
better-comments	aar	2.0.3
vscode-browser-preview	auc	0.5.4
bracket-pair-colorizer-2	Coe	0.0.28
gitlens	eam	9.7.1
prettier-vscode	esb	1.9.0
auto-close-tag	for	0.5.6
auto-rename-tag	for	0.0.15
easy-snippet	inu	0.1.4
vscode-styled-components	jpo	0.0.26
graphql-for-vscode	kum	1.13.1
vscode-typescript-tslint-plugin	ms-	1.0.0
vscode-jscpd	pau	0.3.4
quicktype	qui	12.0.46
yo	sam	0.9.3
code-settings-sync	Sha	3.2.9
highlight-matching-tag	vin	0.9.1
vscodeintellicode	Vis	1.1.6
vscode-icons	vsc	8.6.0
quokka-vscode	Wal	1.0.212
glean	wix	4.10.3

[jrieken]

Please use this guide to provide more information: https://github.com/Microsoft/vscode/wiki/Performance-Issues. Thanks.

[FishOrBear]

In fact, this is very difficult to reproduce, I often press F1, then restart the TS Service

[jrieken]

On a side note, the project is not that big, it has around 2000 lines across 20ish files.

Do you have node-module dependencies? Do you have a rough estimate how many children the node_modules-folder has?

[ben-denzer]

@jrieken I came here to report the same issue, and I have been able to determine that the slowness does not happen after I remove my node_modules folder. I'm using create-react-app with a few added dependencies so my node_modules folder is pretty large (281Mb) - but uninstalling VS Code 1.33 and installing the Feb release (1.32) fixes my problem.

[mjbvz]

@Morphexe Can you share your project? Also, does this reproduce in the latest VS Code insiders build with all extensions disabled?

[FishOrBear]

Is it likely to be related to this?

microsoft/TypeScript#30663

[ben-denzer]

In my case I use styled components withe Typescript 3.3.333 - I had initially suspected styled-components as I have had issues w/ their VS Code extension before.

But downgrading VS Code is the easy solution for me

[mjbvz]

Closing as more information is needed from the original poster

@Morphexe Please test this using the latest VS Code insiders builds (using TS 3.5-insiders) and let us know if you still see this issue