Vscode: VSCode hitting 70%+ CPU

[jonmill]

Issue Type: Performance Issue

This happens after having one medium-sized .NET Core solution with one ReactJS project

VS Code version: Code 1.32.3 (a3db5be9b5c6ba46bb7555ec5d60178ecc2eaae4, 2019-03-14T23:43:35.476Z)
OS version: Windows_NT x64 10.0.17763

System Info

|Item|Value|
|---|---|
|CPUs|Intel(R) Core(TM) i7-7660U CPU @ 2.50GHz (4 x 2496)|
|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 (4.13GB free)|
|Process Argv||
|Screen Reader|no|
|VM|0%|

Process Info

CPU %   Mem MB     PID  Process
    0       73    2744  code main
    1       68    1416     window (Issue Reporter)
   27      237    5512     window (Common.csproj - platform - Visual Studio Code)
    0       10   17448       watcherService 
    0        4   15680         console-window-host (Windows internal process)
   13     1354   17960       extensionHost
    0        2   18544         cmd /s /c "C:\Users\JonathanMiller\.vscode\extensions\ms-vscode.csharp-1.17.1\.omnisharp\1.32.8\OmniSharp.exe -s c:\Users\JonathanMiller\Repositories\platform\src\platform.sln --hostPID 17960 --stdio DotNet:enablePackageRestore=false --encoding utf-8 --loglevel information --plugin C:\Users\JonathanMiller\.vscode\extensions\ms-vscode.csharp-1.17.1\.razor\OmniSharpPlugin\Microsoft.AspNetCore.Razor.OmniSharpPlugin.dll formattingOptions:useTabs=false formattingOptions:tabSize=4 formattingOptions:indentationSize=4"
    0        4   18232           console-window-host (Windows internal process)
    0       71   20988           C:\Users\JonathanMiller\.vscode\extensions\ms-vscode.csharp-1.17.1\.omnisharp\1.32.8\OmniSharp.exe  -s c:\Users\JonathanMiller\Repositories\platform\src\platform.sln --hostPID 17960 --stdio DotNet:enablePackageRestore=false --encoding utf-8 --loglevel information --plugin C:\Users\JonathanMiller\.vscode\extensions\ms-vscode.csharp-1.17.1\.razor\OmniSharpPlugin\Microsoft.AspNetCore.Razor.OmniSharpPlugin.dll formattingOptions:useTabs=false formattingOptions:tabSize=4 formattingOptions:indentationSize=4
    0       21   18940         C:\Users\JonathanMiller\.vscode\extensions\ms-vscode.csharp-1.17.1\.razor\rzls.exe -lsp --logLevel None
    0        4   11316           console-window-host (Windows internal process)
    0       16   19824         electron_node server.js 
    0       53    5780     shared-process
    1      330    6580     gpu-process
   41      382   14580     window (● VersionTrackerService.cs - ProductManagement - Visual Studio Code)
    0       12    2780       watcherService 
    0        4    7440         console-window-host (Windows internal process)
    0        9   14352       electron-crash-reporter
    0       35   16556       searchService
   14     1554   18304       extensionHost
    0       23    5368         C:\Users\JonathanMiller\.vscode\extensions\ms-vscode.csharp-1.17.1\.razor\rzls.exe -lsp --logLevel None
    0        4    4264           console-window-host (Windows internal process)
    0       19    8012         electron_node tsserver.js 
    0       19   15584           electron_node typingsInstaller.js typesMap.js 
    0       31   13512         "C:\Users\JonathanMiller\AppData\Local\Programs\Microsoft VS Code\Code.exe" "c:\Users\JonathanMiller\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\json-language-features\server\dist\jsonServerMain" --node-ipc --clientProcessId=18304
    0       18   18760         electron_node server.js 
    0        3   20132         cmd /s /c "C:\Users\JonathanMiller\.vscode\extensions\ms-vscode.csharp-1.17.1\.omnisharp\1.32.8\OmniSharp.exe -s c:\Users\JonathanMiller\Repositories\ProductManagement\src\src.sln --hostPID 18304 --stdio DotNet:enablePackageRestore=false --encoding utf-8 --loglevel information --plugin C:\Users\JonathanMiller\.vscode\extensions\ms-vscode.csharp-1.17.1\.razor\OmniSharpPlugin\Microsoft.AspNetCore.Razor.OmniSharpPlugin.dll formattingOptions:useTabs=false formattingOptions:tabSize=4 formattingOptions:indentationSize=4"
    0      182   12564           C:\Users\JonathanMiller\.vscode\extensions\ms-vscode.csharp-1.17.1\.omnisharp\1.32.8\OmniSharp.exe  -s c:\Users\JonathanMiller\Repositories\ProductManagement\src\src.sln --hostPID 18304 --stdio DotNet:enablePackageRestore=false --encoding utf-8 --loglevel information --plugin C:\Users\JonathanMiller\.vscode\extensions\ms-vscode.csharp-1.17.1\.razor\OmniSharpPlugin\Microsoft.AspNetCore.Razor.OmniSharpPlugin.dll formattingOptions:useTabs=false formattingOptions:tabSize=4 formattingOptions:indentationSize=4
    0        5   21368           console-window-host (Windows internal process)

Workspace Info

|  Window (● VersionTrackerService.cs - ProductManagement - Visual Studio Code)
|  Window (Common.csproj - platform - Visual Studio Code)
|    Folder (ProductManagement): 304 files
|      File types: json(51) cs(46) dll(41) js(40) cache(30) map(14) pdb(9)
|                  css(7) html(6) ico(6)
|      Conf files: csproj(3) package.json(2) launch.json(1) tasks.json(1)
|                  sln(1)
|      Launch Configs: coreclr(2)
|    Folder (platform): 7999 files
|      File types: dll(5906) cs(560) cache(284) json(277) js(208) pdb(176)
|                  map(97) xml(70) txt(46) css(41)
|      Conf files: csproj(16) package.json(7) settings.json(3) launch.json(1)
|                  tasks.json(1) sln(1)
|      Launch Configs: coreclr(6);

Extensions (19)

Extension|Author (truncated)|Version
---|---|---
bracket-pair-colorizer|Coe|1.0.61
vscode-markdownlint|Dav|0.25.0
xml|Dot|2.4.0
prettier-vscode|esb|1.8.1
dotnet-test-explorer|for|0.6.5
vscode-pull-request-github|Git|0.5.1
graphql-for-vscode|kum|1.13.0
azure-pipelines|ms-|1.147.2
vscode-azureappservice|ms-|0.13.0
vscode-azurestorage|ms-|0.7.0
mssql|ms-|1.4.0
python|ms-|2019.2.5558
azure-account|ms-|0.8.0
azurecli|ms-|0.4.4
csharp|ms-|1.17.1
vscode-node-azure-pack|ms-|0.0.5
azurerm-vscode-tools|msa|0.5.0
vscode-coverage-gutters|rya|2.3.1
vscode-icons|vsc|8.3.0

[sallyamoore]

I'm having a similar issue, but with my CPU hitting 102% on mac os 10.14.2 using Python

[isidorn]

Follow this steps to file a good issue please. Thanks
https://github.com/Microsoft/vscode/wiki/Performance-Issues

[jonmill]

@isidorn - since this is a main window scenario, here is the attached javascript profile

CPU-20190325T112243.zip

[isidorn]

@jonmill thanks for the profile. But can you reproduce with .NET core extension disabled?
If not, please file this issue with the profile to their extension repo

[jonmill]

@isidorn - since @sallyamoore is having this issue while using Python, this appears to not be related to .NET Core

[sallyamoore]

Follow this steps to file a good issue please. Thanks
https://github.com/Microsoft/vscode/wiki/Performance-Issues

Sorry about that, I'll provide full context the next time this happens. I restarted my machine immediately after replying and it hasn't happened since, but it has been an intermittent issue for a least the past few weeks. Will keep you updated.

[isidorn]

@jonmill does not really work that way. He might have an issue with the python extension.
Please try reproducing withou the .NET core extension and with plain vscode insiders https://code.visualstudio.com/insiders/

[sallyamoore]

@jonmill does not really work that way. He might have an issue with the python extension.
Please try reproducing withou the .NET core extension and with plain vscode insiders https://code.visualstudio.com/insiders/

I'm a she.

[isidorn]

Apologies.

[jonmill]

@isidorn - this is not an immediate repro, it takes time and isn't 100%. Moving my entire dev flow to not have intellisense and symbol lookup while waiting for this to repro isn't very reasonable and would definitely cause a loss for my company.

Could you please explain why it's necessary to jump through those hoops when we have provided two use cases using different extensions, a full profiling, and full information showing the problem in the main render window? This seems like it should be enough information to at least investigate on your end.

[isidorn]

Looking at the cpu profile this seems to be coming from electron.asar. Internal crypto
Forwarding to @bpasero who would know more

[jonmill]

Thanks for the quick follow-up @isidorn!

[bpasero]

We are building exploration builds that use a much newer version of our UI framework (Electron version 4.0.x). I wonder if this issue reproduces with one of these builds, could you try? Download:

• macOS: Download
• Linux: Download
• Windows: Download

[Geekz45679]

We are building exploration builds that use a much newer version of our UI framework (Electron version 4.0.x). I wonder if this issue reproduces with one of these builds, could you try? Download:

• macOS: Download
• Linux: Download
• Windows: Download

@bpasero
I'm also having this issue on the Insiders build (1.33.00-insider, MacOS Mojave 10.14.3), however I can't seem to reproduce it on the Exploration build, which is good. I can provide more information if needed.

[jonmill]

Agreed; @bpasero - is there a general ETA for the move to electron 4.0.x to get to stable? Nothing concrete, but any general timeframe would be appreciated

[bpasero]

We will ship with Electron 4 with our upcoming release 1.36 this week. As such I am closing this issue. To benefit from the update already today, consider to use our insiders version: https://code.visualstudio.com/insiders/