Whats [ASP.net]MVC doing BEFORE my controller?

Question

I've got a bit of a strange performance issue occurring with my MVC Controller, or rather before it?

According to the Mini Profiler output, there is a 120ms overhead before reaching my controller.

Does anyone know why this would be? This is on a server (Not local), that has Compilation debug=false set, so it's not an issue of not running in release mode.

Everything after it, I can tune/amend, but before it? and I'm lost..

Thoughts??

Update

After some performance tooling I came across enter link description here & enter link description here which resulted in the below:

Most expensive stacks ------------------------------------ System.Web.HttpApplication+CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute System.Web.HttpApplication.ExecuteStep System.Web.HttpApplication+PipelineStepManager.ResumeSteps System.Web.HttpApplication.BeginProcessRequestNotification System.Web.HttpRuntime.ProcessRequestNotificationPrivate System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper System.Web.Hosting.PipelineRuntime.ProcessRequestNotification System.Web.Hosting.UnsafeIISMethods.MgdIndicateCompletion System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper System.Web.Hosting.PipelineRuntime.ProcessRequestNotification ===> Cost (1716011)

Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp Microsoft.Practices.ObjectBuilder2.BuilderContext.NewBuildUp Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp Microsoft.Practices.ObjectBuilder2.BuilderContext.NewBuildUp Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp Microsoft.Practices.ObjectBuilder2.BuilderContext.NewBuildUp Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp Microsoft.Practices.Unity.UnityContainer.DoBuildUp Microsoft.Practices.Unity.UnityContainer.DoBuildUp System.Web.Mvc.DefaultControllerFactory+DefaultControllerActivator.Create System.Web.Mvc.DefaultControllerFactory.CreateController System.Web.Mvc.MvcHandler.ProcessRequestInit System.Web.Mvc.MvcHandler+<>c__DisplayClass6.b__2 System.Web.Mvc.SecurityUtil+<>c__DisplayClassb`1.b__a System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust System.Web.HttpApplication+CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute System.Web.HttpApplication.ExecuteStep System.Web.HttpApplication+PipelineStepManager.ResumeSteps System.Web.HttpApplication.BeginProcessRequestNotification System.Web.HttpRuntime.ProcessRequestNotificationPrivate System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper System.Web.Hosting.PipelineRuntime.ProcessRequestNotification System.Web.Hosting.UnsafeIISMethods.MgdIndicateCompletion System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper System.Web.Hosting.PipelineRuntime.ProcessRequestNotification ===> Cost (936006)

Microsoft.Win32.Win32Native.CoCreateGuid StackExchange.Profiling.Timing..ctor StackExchange.Profiling.MVCHelpers.ProfilingViewEngine.Find System.Web.Mvc.ViewEngineCollection+<>c__DisplayClassc.b__a System.Web.Mvc.ViewEngineCollection.Find System.Web.Mvc.ViewEngineCollection.Find System.Web.Mvc.ViewResult.FindView System.Web.Mvc.ViewResultBase.ExecuteResult System.Web.Mvc.ControllerActionInvoker+<>c__DisplayClass1c.b__19 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters System.Web.Mvc.ControllerActionInvoker.InvokeAction System.Web.Mvc.Controller.ExecuteCore System.Web.Mvc.ControllerBase.Execute System.Web.Mvc.MvcHandler+<>c__DisplayClass6+<>c__DisplayClassb.b__5 System.Web.Mvc.Async.AsyncResultWrapper+<>c__DisplayClass1.b__0 System.Web.Mvc.MvcHandler+<>c__DisplayClasse.b__d System.Web.HttpApplication+CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute System.Web.HttpApplication.ExecuteStep System.Web.HttpApplication+PipelineStepManager.ResumeSteps System.Web.HttpApplication.BeginProcessRequestNotification System.Web.HttpRuntime.ProcessRequestNotificationPrivate System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper System.Web.Hosting.PipelineRuntime.ProcessRequestNotification System.Web.Hosting.UnsafeIISMethods.MgdIndicateCompletion System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper System.Web.Hosting.PipelineRuntime.ProcessRequestNotification ===> Cost (780005)

Could unity be cause some issues?

Answer 1

You should have a look on the The ASP.NET MVC Pipeline

The ASP.NET MVC Pipeline can be divided into the following parts -

• App initialisation - n this method, you can add Route objects to the static RouteTable.Routes collection (which is of type RouteCollection).

• Routing Part – Routing module tries to match the incoming URL with the routing table, and calling the corresponding IRouteHandler.

• Controller creation – the IControllerFactory creates an instance of the controller based on route parameters and default naming conventions.

• Action Execution – the IActionInvoker identifies the method to be executed, the IModelBinder validates and binds the method parameters and the IFilterProvider discovers filters to be applied. The Action returns a type ActionResult.

• View – the IViewEngine instantiates the correct view engine and the model is passed to the view. Using Model Validation Provider, the validation rules are retrieved to create client-side validation scripts as well as remote validation scripts

For More Info :

http://blog.stevensanderson.com/2007/11/20/aspnet-mvc-pipeline-lifecycle/