Question

Got a weird one here. Site is deployed into production and trying to bring the site up takes for ever even after the site has been visited within the last minute or so. Once on the site it is fast but for whatever reason the intial request drags on. Im using forms auth on IIS 6 / Win2003R2.

Here is the trace output but not sure if this is fast or not:

Trace Information 
Category Message From First(s) From Last(s) 
aspx.page Begin PreInit   
aspx.page End PreInit 0.000724673107894998 0.000725 
aspx.page Begin Init 0.00076126993793904 0.000037 
aspx.page End Init 0.000788368354078521 0.000027 
aspx.page Begin InitComplete 0.000803454070279882 0.000015 
aspx.page End InitComplete 0.000818819151596083 0.000015 
aspx.page Begin PreLoad 0.000838095344520044 0.000019 
aspx.page End PreLoad 0.000853181060721405 0.000015 
aspx.page Begin Load 0.000867987411807925 0.000015 
aspx.page End Load 0.000924698530120448 0.000057 
aspx.page Begin LoadComplete 0.000944254088159249 0.000020 
aspx.page End LoadComplete 0.00096045726481997 0.000016 
aspx.page Begin PreRender 0.000975263615906491 0.000015 
aspx.page End PreRender 0.00109343505948382 0.000118 
aspx.page Begin PreRenderComplete 0.00111103506171874 0.000018 
aspx.page End PreRenderComplete 0.00112640014303494 0.000015 
aspx.page Begin SaveState 0.00208294629624715 0.000957 
aspx.page End SaveState 0.00985628061667056 0.007773 
aspx.page Begin SaveStateComplete 0.00989231871648492 0.000036 
aspx.page End SaveStateComplete 0.00990796316291596 0.000016 
aspx.page Begin Render 0.00992276951400248 0.000015 
aspx.page End Render 0.0115989602030426 0.001676

This application resides in a VPN so no outside access. What can i do to check if its a network issue so I can contact the Network people?

Code in Global.asax

/// <summary>
        /// Fires when the application is started
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public void Application_Start(object sender, EventArgs e)
        {

        }

        /// <summary>
        /// Fires when the session is started
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public void Session_Start(object sender, EventArgs e)
        {

        }

Answer 1

Could be appdomain startup Asp.net website first start is very slow

Could be ASP dynamic compile http://msdn.microsoft.com/en-us/library/ms366723.aspx

Could be code signing validation http://rusanu.com/2009/07/24/fix-slow-application-startup-due-to-code-sign-validation/

There are also other similar patterns (DB warm up, connection pool warm up etc).