RDTSCP - Port Usage

With lfence (to avoid incorrect counts due to replays)

• Code:

     0:	0f 01 f9             	rdtscp
     3:	90                   	nop
     4:	90                   	nop
     5:	90                   	nop
     6:	90                   	nop
     7:	90                   	nop
     8:	90                   	nop
     9:	90                   	nop
     a:	90                   	nop
     b:	90                   	nop
     c:	90                   	nop
     d:	0f ae e8             	lfence
  

• Show nanoBench command
• Results:
  • Instructions retired: 12.0
  • Core cycles: 51.99
  • Reference cycles: 36.7
  • UOPS_DISPATCHED.INT_EU_ALL: 23.0
  • UOPS_DISPATCHED.ALU: 9.0
  • UOPS_DISPATCHED.LD: 0.0
  • UOPS_DISPATCHED.SLOW: 4.0
  • UOPS_DISPATCHED.STD: 0.0
  • UOPS_DISPATCHED.SHIFT: 2.0
  • UOPS_DISPATCHED.JMP: 6.0
  • UOPS_DISPATCHED.STA: 0.0