Multicorejit vs Forcejit in .net apps

Hi,

Hi

I have asp.net project and increase the warmup performance I use System.Runtime.CompilerServices.RuntimeHelpers.PrepareMethod(method.MethodHandle); to forcejit.But as I read after .net 4.5 multicorejit is avaliable and default work in asp.net projects.In my test I close multicorejit in web.config "compilation profileGuidedOptimizations="None"".But there is no change in my performance.My questions are

should I use forcejit in asp.net apps?Or multicorejit is enough?

Should Forcejit and multicorejit  use in same time?

As I read multicorejit and forcejit do samething ,which one I should prefer?

Regards