VS code using too much cpu

[k2209]

Type: Bug

Recently i was working with vscode i have only opened two vs code windown one is for nodejs server and another one is for flutter framework and my cpu shoot upto 100% usage after opening just two VS code windows

VS Code version: Code 1.91.1 (f1e16e1e6214d7c44d078b1f0607b2388f29d729, 2024-07-09T22:06:49.809Z) OS version: Windows_NT x64 10.0.22631 Modes:

System Info

|Item|Value| |---|---| |CPUs|11th Gen Intel(R) Core(TM) i5-11300H @ 3.10GHz (8 x 3110)| |GPU Status|2d_canvas: enabled
canvas_oop_rasterization: enabled_on
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
skia_graphite: disabled_off
video_decode: enabled
video_encode: enabled
vulkan: disabled_off
webgl: enabled
webgl2: enabled
webgpu: enabled| |Load (avg)|undefined| |Memory (System)|15.70GB (4.78GB free)| |Process Argv|--crash-reporter-id 2dff5377-5d74-49b9-a6ac-282b356dabca| |Screen Reader|no| |VM|0%|

Extensions (26)

Extension|Author (truncated)|Version ---|---|--- blackbox|Bla|1.3.63 turbo-console-log|Cha|2.10.4 dart-code|Dar|3.92.0 flutter|Dar|3.92.0 vscode-eslint|dba|3.0.10 xml|Dot|2.5.1 gitlens|eam|15.2.0 bloc|Fel|6.6.6 better-cpp-syntax|jef|1.27.1 pubspec-assist|jer|2.3.2 Kotlin|mat|1.7.1 dotenv|mik|1.0.1 vscode-filesize|mkx|3.1.0 csdevkit|ms-|1.8.14 csharp|ms-|2.34.12 vscode-dotnet-runtime|ms-|2.0.9 cmake-tools|ms-|1.18.43 cpptools|ms-|1.20.5 cpptools-extension-pack|ms-|1.3.0 awesome-flutter-snippets|Nas|4.0.1 material-icon-theme|PKi|5.6.0 remove-comments|pli|1.2.2 LiveServer|rit|5.7.9 pdf|tom|1.2.2 cmake|twx|0.0.17 vscode-gradle|vsc|3.14.1 (1 theme extensions excluded)

A/B Experiments

``` vsliv368cf:30146710 vspor879:30202332 vspor708:30202333 vspor363:30204092 vscod805:30301674 binariesv615:30325510 vsaa593cf:30376535 py29gd2263:31024239 c4g48928:30535728 azure-dev_surveyone:30548225 a9j8j154:30646983 962ge761:30959799 pythongtdpath:30769146 welcomedialog:30910333 pythonnoceb:30805159 asynctok:30898717 pythonregdiag2:30936856 pythonmypyd1:30879173 h48ei257:31000450 pythontbext0:30879054 accentitlementst:30995554 dsvsc016:30899300 dsvsc017:30899301 dsvsc018:30899302 cppperfnew:31000557 dsvsc020:30976470 pythonait:31006305 chatpanelt:31048053 dsvsc021:30996838 da93g388:31013173 pythoncenvpt:31062603 a69g1124:31058053 dvdeprecation:31068756 dwnewjupyter:31046869 2f103344:31071589 legacy_priority:31094926 ccplti:31098112 hdi1a554:31097393 ```

[gjsjohnmurray]

Please see https://github.com/microsoft/vscode/wiki/Performance-Issues

[VSCodeTriageBot]

Thanks for creating this issue! We figured it's missing some basic information or in some other way doesn't follow our issue reporting guidelines. Please take the time to review these and update the issue.

Happy Coding!

[maxime4000]

I would like to add my experience.

Lately, maybe in the past 2 month or so, I find myself having a slower and slightly worst experience using VSCode. Can't explain, just a feeling on how it feel responsive lately.

I update monthly and could say that in June, I've start experiencing some small lag, while Today is a lag of few seconds.

Today, I install the latest update (1.91.1) and I immediately found that the Scrolling start lagging and "ctrl+mouse click" seem to lag a bit where the UI find the references slower than before. I found myself thinking that something is not right, so I've uninstalled some extensions I didn't need anymore, reboot the PC and still have a "laggy experience". Nothing that doesn't allow me to work, but enough to make the experience slightly annoying.

I did not install any new extensions, nor anything that could be suspicious to affect VSCode performance.

I do have a old CPU i7 (4th gen with 24go ram) which never have been an issue about responsiveness of the IDE (In situation where I'm not running something heavy in the background). I also experience some lag in the past due to using a M1 "with not enough RAM", but it's a different feeling.

Can't help much as I'm not sure what cause this, but when lag happen, CPU goes up to 100%.