Painfully slow server performance on .NET Core 1.0.0 #1545

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fergalmoran · 2025-08-09T17:20:33Z

fergalmoran commented

2025-08-09 17:20:33 +00:00

Originally created by @empz on 6/28/2016

I'm having an extremely slow server performance all of a sudden.

In order to test it wasn't anything I added to the template, I've created an empty React/Redux application from the yeoman generator and modified package.json to use the newly .NET Core 1.0.0 packages as following:

{
  "dependencies": {
    "Microsoft.NETCore.App": {
      "version": "1.0.0",
      "type": "platform"
    },
    "Microsoft.AspNetCore.Diagnostics": "1.0.0",
    "Microsoft.AspNetCore.Mvc": "1.0.0",
    "Microsoft.AspNetCore.Razor.Tools": {
      "version": "1.0.0-preview1-final",
      "type": "build"
    },
    "Microsoft.AspNetCore.ReactServices": "1.0.0-*",
    "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
    "Microsoft.AspNetCore.Server.Kestrel": "1.0.0",
    "Microsoft.AspNetCore.StaticFiles": "1.0.0",
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
    "Microsoft.Extensions.Configuration.Json": "1.0.0",
    "Microsoft.Extensions.Logging": "1.0.0",
    "Microsoft.Extensions.Logging.Console": "1.0.0",
    "Microsoft.Extensions.Logging.Debug": "1.0.0"
  },

  "tools": {
    "Microsoft.AspNetCore.Razor.Tools": {
      "version": "1.0.0-preview1-final",
      "imports": "portable-net45+win8+dnxcore50"
    },
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": {
      "version": "1.0.0-preview2-final"
    }
  },
  // rest of project.json
}

Then running the project in development mode results in huge load times of assets:

info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/
info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[1]
      Executing action method AspnetcoreSpa.Controllers.HomeController.Index (aspnetcore-spa) with arguments () - ModelState is Valid
info: Microsoft.AspNetCore.Mvc.ViewFeatures.Internal.ViewResultExecutor[1]
      Executing ViewResult, running view at path /Views/Home/Index.cshtml.
info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[2]
      Executed action AspnetcoreSpa.Controllers.HomeController.Index (aspnetcore-spa) in 3637.6857ms
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 3642.5351ms 200 text/html; charset=utf-8
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/dist/main.js?v=6ZYWO9abDsbS5XJslj81MbyRPyrDaTQq9MpyEwgW3fQ
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/dist/vendor.js?v=BH772UWWJoCyeGM9-pZo_Fy6c6FOXG7K6vaVvPPC7cg
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/dist/vendor.css?v=WkDR4QmPsmL8e0G1mrsXi7xUVZAD5VjImuuRyjPg2KQ
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/dist/site.css?v=cSV83nJuUJ1OdTRQnj_lYGuqHtCa3BmcL8mwRweYFJI
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 2579.2843ms 200 application/javascript
info: Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware[2]
      Sending file. Request path: '/dist/vendor.js'. Physical path: 'E:\Desktop\aspnetcore-spa\wwwroot\dist\vendor.js'
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 5545.0118ms 200 application/javascript
info: Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware[2]
      Sending file. Request path: '/dist/vendor.css'. Physical path: 'E:\Desktop\aspnetcore-spa\wwwroot\dist\vendor.css'
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 7684.0947ms 200 text/css
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 10233.8428ms 200 text/css
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/dist/bootstrap.css.map
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/__webpack_hmr
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 0.4131ms 302
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/favicon.ico
info: Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware[2]
      Sending file. Request path: '/favicon.ico'. Physical path: 'E:\Desktop\aspnetcore-spa\wwwroot\favicon.ico'
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 1.8288ms 200 image/x-icon
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 2554.541ms 404

*Originally created by @empz on 6/28/2016* I'm having an extremely slow server performance all of a sudden. In order to test it wasn't anything I added to the template, I've created an empty React/Redux application from the yeoman generator and modified `package.json` to use the newly .NET Core 1.0.0 packages as following: ``` json { "dependencies": { "Microsoft.NETCore.App": { "version": "1.0.0", "type": "platform" }, "Microsoft.AspNetCore.Diagnostics": "1.0.0", "Microsoft.AspNetCore.Mvc": "1.0.0", "Microsoft.AspNetCore.Razor.Tools": { "version": "1.0.0-preview1-final", "type": "build" }, "Microsoft.AspNetCore.ReactServices": "1.0.0-*", "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0", "Microsoft.AspNetCore.Server.Kestrel": "1.0.0", "Microsoft.AspNetCore.StaticFiles": "1.0.0", "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0", "Microsoft.Extensions.Configuration.Json": "1.0.0", "Microsoft.Extensions.Logging": "1.0.0", "Microsoft.Extensions.Logging.Console": "1.0.0", "Microsoft.Extensions.Logging.Debug": "1.0.0" }, "tools": { "Microsoft.AspNetCore.Razor.Tools": { "version": "1.0.0-preview1-final", "imports": "portable-net45+win8+dnxcore50" }, "Microsoft.AspNetCore.Server.IISIntegration.Tools": { "version": "1.0.0-preview2-final" } }, // rest of project.json } ``` Then running the project in development mode results in huge load times of assets: ![image](https://cloud.githubusercontent.com/assets/412489/16401840/1ad32d66-3cbe-11e6-9f5b-a9322278cf69.png) ``` info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1] Request starting HTTP/1.1 GET http://localhost:5000/ info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[1] Executing action method AspnetcoreSpa.Controllers.HomeController.Index (aspnetcore-spa) with arguments () - ModelState is Valid info: Microsoft.AspNetCore.Mvc.ViewFeatures.Internal.ViewResultExecutor[1] Executing ViewResult, running view at path /Views/Home/Index.cshtml. info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[2] Executed action AspnetcoreSpa.Controllers.HomeController.Index (aspnetcore-spa) in 3637.6857ms info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] Request finished in 3642.5351ms 200 text/html; charset=utf-8 info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1] Request starting HTTP/1.1 GET http://localhost:5000/dist/main.js?v=6ZYWO9abDsbS5XJslj81MbyRPyrDaTQq9MpyEwgW3fQ info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1] Request starting HTTP/1.1 GET http://localhost:5000/dist/vendor.js?v=BH772UWWJoCyeGM9-pZo_Fy6c6FOXG7K6vaVvPPC7cg info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1] Request starting HTTP/1.1 GET http://localhost:5000/dist/vendor.css?v=WkDR4QmPsmL8e0G1mrsXi7xUVZAD5VjImuuRyjPg2KQ info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1] Request starting HTTP/1.1 GET http://localhost:5000/dist/site.css?v=cSV83nJuUJ1OdTRQnj_lYGuqHtCa3BmcL8mwRweYFJI info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] Request finished in 2579.2843ms 200 application/javascript info: Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware[2] Sending file. Request path: '/dist/vendor.js'. Physical path: 'E:\Desktop\aspnetcore-spa\wwwroot\dist\vendor.js' info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] Request finished in 5545.0118ms 200 application/javascript info: Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware[2] Sending file. Request path: '/dist/vendor.css'. Physical path: 'E:\Desktop\aspnetcore-spa\wwwroot\dist\vendor.css' info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] Request finished in 7684.0947ms 200 text/css info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] Request finished in 10233.8428ms 200 text/css info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1] Request starting HTTP/1.1 GET http://localhost:5000/dist/bootstrap.css.map info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1] Request starting HTTP/1.1 GET http://localhost:5000/__webpack_hmr info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] Request finished in 0.4131ms 302 info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1] Request starting HTTP/1.1 GET http://localhost:5000/favicon.ico info: Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware[2] Sending file. Request path: '/favicon.ico'. Physical path: 'E:\Desktop\aspnetcore-spa\wwwroot\favicon.ico' info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] Request finished in 1.8288ms 200 image/x-icon info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] Request finished in 2554.541ms 404 ```

fergalmoran closed this issue

2025-08-09 17:20:33 +00:00

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Reference: github/JavaScriptServices#1545