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IIS hangs on ExecuteRequestHandler

I am facing a problem with IIS.

The problem is this:

  • Sometimes (intermittent issue) IIS hangs a request in a named state ExecuteRequestHandler

    and it wastes ~ 85% of the time.

I couldn't figure out why. Tried everything I found on the forums, nothing helped. I am using azure for my backend server and another azure server. I have my database.

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Can someone please explain what exactly this ExecuteRequestHandler step enters the request lifecycle?

I haven't found a good explanation of what this step does. Is my code already running or is it a pre-lifecycle task? The reason I am asking is that it can determine where the problem is.

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This is when the application code is executed.

When it receives a request, the IIS creates an object IRequest

to represent it, and creates for him IHttpHandler

an exact grade depending on the technology ( DefaultHttpHandler

, MvcHandler

, ...).



There are many steps to fully processing a request, the main one being the method HttpApplication.CallHandlerExecutionStep.Execute

that calls ProcessRequest

in IHttpHandler

.

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