SFENCE - Throughput and Uops

With unroll_count=500 and no inner loop

• Code:

     0:	0f ae f8             	sfence 
  

• Init:

  VZEROALL

• Show nanoBench command
• Results:
  • Instructions retired: 1.0
  • Core cycles: 2.0
  • Reference cycles: 2.05
  • UOPS_RETIRED.ALL: 1.0
  • UOPS_MS: 0.0

With loop_count=1000 and unroll_count=10

• Code:

     0:	0f ae f8             	sfence 
  

• Init:

  VZEROALL

• Show nanoBench command
• Results:
  • Instructions retired: 1.2
  • Core cycles: 1.99
  • Reference cycles: 2.04
  • UOPS_RETIRED.ALL: 1.2
  • UOPS_MS: 0.0

With loop_count=100 and unroll_count=100

• Code:

     0:	0f ae f8             	sfence 
  

• Init:

  VZEROALL

• Show nanoBench command
• Results:
  • Instructions retired: 1.02
  • Core cycles: 1.99
  • Reference cycles: 2.04
  • UOPS_RETIRED.ALL: 1.02
  • UOPS_MS: 0.0