With the release of CPS 4.5, Citrix has updated its documentation library on http://support.citrix.com. One of the documents that caught my eye is Citrix Application Streaming Internals. It is more like a white paper/getting started guide and is worth the read.
This white paper provides you with details about profiling and Citrix Streaming Profiler internals for Citrix Presentation Server 4.5. It is one of a series of white papers designed to provide you with more detailed information beyond the scope of the Citrix Application Streaming Guide included with the Presentation Server documentation.
Download it here