[performance issue] TSlinting slow

[guillaumegarcia13]

Issue Type: Performance Issue

When TSlinting, it's awfully slow (like 15-20 seconds to have the linting updated)!
For the moment, I copy/paste from Stackblitz...

VS Code version: Code 1.23.1 (d0182c3, 2018-05-10T17:11:17.614Z)
OS version: Windows_NT x64 10.0.16299

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz (8 x 2592)
GPU Status	2d_canvas: enabled 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: disabled_software video_decode: enabled video_encode: enabled vpx_decode: unavailable_software webgl: enabled webgl2: enabled
Memory (System)	15.90GB (6.28GB free)
Process Argv	C:\Program Files\Microsoft VS Code\Code.exe
Screen Reader	no
VM	0%

Process Info

CPU %	Mem MB	   PID	Process
    0	    96	 23084	code main
    0	    77	  1160	   shared-process
    0	   325	  4068	   window (freelancer.ts - fcom-data-migrate - Visual Studio Code)
    0	    33	  5232	     terminal
    0	     6	 13204	       winpty-process
    0	     5	 22768	         "C:\Program Files\Git\bin\bash.exe"
    0	    10	  3520	           "C:\Program Files\Git\bin\..\usr\bin\bash.exe"
    0	    10	 24132	         console-window-host (Windows internal process)
    0	    13	  8008	     electron-crash-reporter
    0	   136	 17016	     extensionHost
    0	    41	  2172	       electron_node jsonServerMain.js 
    0	   320	 15424	       electron_node electronForkStart.js tsserver.js 
    0	    36	 12324	         electron_node typingsInstaller.js tsserver.js typesMap.js 
    0	    64	 20396	       electron_node tslintServer.js 
    0	    15	 19776	     watcherService 
    0	    10	 17604	       console-window-host (Windows internal process)
    0	    36	 20672	     searchService
    0	    89	 16940	   shared-process
    1	   144	 18284	   gpu-process

Workspace Info

|  Window (freelancer.ts - fcom-data-migrate - Visual Studio Code)
|    Folder (fcom-data-migrate): 114 files
|      File types: jpeg(78) png(9) json(5) ts(5) js(5) map(5) sql(4) log(2)
|                  gitignore(1)
|      Conf files: launch.json(1) settings.json(1) package.json(1)
|                  tsconfig.json(1) tslint.json(1);

Extensions (23)

Extension	Author (truncated)	Version
npm-intellisense	chr	1.3.0
path-intellisense	chr	1.4.2
tslint	eg2	1.0.29
vscode-npm-script	eg2	0.3.4
search-node-modules	jas	1.3.0
Angular2	joh	6.1.1
ng-bootstrap-snippets	ktr	1.0.0
vscode-cosmosdb	ms-	0.7.1
vscode-language-pack-fr	MS-	1.23.0
mssql	ms-	1.3.1
python	ms-	2018.4.0
azure-account	ms-	0.4.0
vscode-code-outline	pat	0.2.1
material-icon-theme	PKi	3.4.0
remote-vscode	raf	1.1.0
sass-indented	rob	1.4.9
autoimport	ste	1.5.3
cordova-tools	vsm	1.3.10
nodejs-extension-pack	wad	0.1.9
vscode-todo-highlight	way	0.5.12
JavaScriptSnippets	xab	1.6.0
markdown-all-in-one	yzh	1.3.0
html-css-class-completion	Zig	1.17.1

(3 theme extensions excluded)

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• Re-enable the unused variables tslint rule for the hygiene task fixes #42157 (#42831)

[guillaumegarcia13]

Wow... that was fast! 😊

I simply put my source files into a /src folder and... got back my speedy TSlinting.
Many thanks @vscodebot!! 🤣