CRS 2011 CPU/RAM

I have Crystal Server 2011 Installed on Windows Server 2008 with 6gb Ram with 2 cores

We have barely any users logged in ever.

Our memory is being used between 80-100% all the time. Sql Server is using almost all of it.

I could not find any good articles explaining how to track down where the resources are going. Can someone point me in the right direction

to figure out what is going on?