All suggested counters are  nominally programmed. To do:
1) CBox events need to be chosen
2) QPI Unit monitors needs to be enables in BIOS
3) Home Agent Unit has 2 free counters
4) R2PCI Unit counters need to be chosen.   data transmits to ring counter is not incrementing (should it in testing?)
5) PCU events need to be narrowed down.  These don't seem tricky to program so maybe I'm missing something.