asp.net mvc - Website Slow At Loading The Login Form -

i have asp.net mvc website developing, , deployed on test server client give initial feedback.

i have noticed on live server there considerable delay in loading login form, of around 20-30 seconds. once logged in, system functions fine, , responsive.

if log out, , return login page, once again slow.

it doesn't appear issue apppool spooling up, happens every time on page, not once, , items appear loading.

any suggestions on how debug this?

below basecontroller controllers enherit, plus account login controller.

protected override void executecore()     {            if (user.identity.isauthenticated)         {             try             {                 accountdatacontext = new accountdal.datacontext(configurationmanager.appsettings["server"]);                 // set current user.                  currentuser = accountdatacontext.users.firstordefault(x => x.email == user.identity.name);                 accountdatacontext.currentaccount = currentuser.account;                 viewbag.currentuser = currentuser;                 viewbag.account = currentuser.account;                  systemdatacontext = new systemdal.datacontext(configurationmanager.appsettings["server"], currentuser.account.database);                  // setup account based on users settings                 viewbag.theme = "default"; // hard coded             }             catch (exception)             {                 // if previous threw exception, logged in user has been deleted                 // log them out                 formsauthentication.signout();                 session.abandon();                  // clear authentication cookie                 var cookie = new httpcookie(formsauthentication.formscookiename, "");                 cookie.expires = datetime.now.addyears(-1);                 response.cookies.add(cookie);                  formsauthentication.redirecttologinpage();             }         }          base.executecore();     } 

and accounts controller:

    [allowanonymous]     public actionresult login(string returnurl)     {         viewbag.returnurl = returnurl;         return view();     }      //     // post: /account/login     [httppost]     [allowanonymous]     [validateantiforgerytoken]     public actionresult login(loginviewmodel model, string returnurl)     {         if (modelstate.isvalid)         {              if(accountdatacontext == null)                 accountdatacontext = new accountdal.datacontext(configurationmanager.appsettings["server"]);              var user = accountdatacontext.users.firstordefault(x => x.email == model.username && x.password == model.password);             if (user != null)             {                 formsauthentication.setauthcookie(model.username, model.rememberme);                 return redirecttolocal(returnurl);             }             else             {                 modelstate.addmodelerror("", "invalid username or password.");             }         }          // if got far, failed, redisplay form         return view(model);     } 

couple of things improve performance:

• first , foremost : deploy site in release mode if care @ performance. here great article dave ward it.

  <compilation targetframework="your framework version" debug="false">

• if not using webforms view engine (which assume not) jus disable , use razor , take little further, allow chtml files

  viewengines.engines.clear(); iviewengine razorengine = new razorviewengine() { fileextensions = new string[] { "cshtml" } }; viewengines.engines.add(razorengine);

• configure idle time-out settings application pool (iis 7) here's link

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edit1:

based on last comment mentioning app running fine in local iis. recommend start focusing on analyzing requests on remote iis , here's link tool can use.

in order trace successful requests (and should in case) set status 200 here's tutorial on well.