SFENCE

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: 5.99
- Reference cycles: 4.54
- UOPS_EXECUTED.THREAD: 2.0
- RETIRE_SLOTS: 2.0
- UOPS_MITE: 2.0
- UOPS_MS: 0.0
- UOPS_PORT_0: 0.0
- UOPS_PORT_1: 0.0
- UOPS_PORT_6: 0.0
- UOPS_PORT_49: 1.0
- UOPS_PORT_78: 1.0
- UOPS_PORT_5B: 0.0
- UOPS_PORT_5B>=2: 0.0
- UOPS_PORT_23A: 0.0
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 1.0

With unroll_count=500, no inner loop, and 1 NOP

Code:

   0:	0f ae f8             	sfence 
   3:	90                   	nop

Init:
```
VZEROALL
```
Show nanoBench command
Results:
- Instructions retired: 2.0
- Core cycles: 6.0
- Reference cycles: 4.51
- UOPS_EXECUTED.THREAD: 2.0
- RETIRE_SLOTS: 3.0
- UOPS_MITE: 3.01
- UOPS_MS: 0.0
- UOPS_PORT_0: 0.0
- UOPS_PORT_1: 0.0
- UOPS_PORT_6: 0.0
- UOPS_PORT_49: 1.0
- UOPS_PORT_78: 1.0
- UOPS_PORT_5B: 0.0
- UOPS_PORT_5B>=2: 0.0
- UOPS_PORT_23A: 0.0
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 1.0

With unroll_count=500, no inner loop, and 2 NOPs

Code:

   0:	0f ae f8             	sfence 
   3:	90                   	nop
   4:	90                   	nop

Init:
```
VZEROALL
```
Show nanoBench command
Results:
- Instructions retired: 3.0
- Core cycles: 4.74
- Reference cycles: 3.49
- UOPS_EXECUTED.THREAD: 1.99
- RETIRE_SLOTS: 4.0
- UOPS_MITE: 3.92
- UOPS_MS: 0.11
- UOPS_PORT_0: 0.0
- UOPS_PORT_1: 0.0
- UOPS_PORT_6: 0.0
- UOPS_PORT_49: 1.0
- UOPS_PORT_78: 1.0
- UOPS_PORT_5B: 0.0
- UOPS_PORT_5B>=2: 0.0
- UOPS_PORT_23A: 0.0
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 0.99

With unroll_count=500, no inner loop, and 3 NOPs

Code:

   0:	0f ae f8             	sfence 
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop

Init:
```
VZEROALL
```
Show nanoBench command
Results:
- Instructions retired: 4.0
- Core cycles: 6.0
- Reference cycles: 4.51
- UOPS_EXECUTED.THREAD: 2.0
- RETIRE_SLOTS: 5.0
- UOPS_MITE: 4.98
- UOPS_MS: 0.0
- UOPS_PORT_0: 0.0
- UOPS_PORT_1: 0.0
- UOPS_PORT_6: 0.0
- UOPS_PORT_49: 1.0
- UOPS_PORT_78: 1.0
- UOPS_PORT_5B: 0.0
- UOPS_PORT_5B>=2: 0.0
- UOPS_PORT_23A: 0.0
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 1.0

With unroll_count=500, no inner loop, and 4 NOPs

Code:

   0:	0f ae f8             	sfence 
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop

Init:
```
VZEROALL
```
Show nanoBench command
Results:
- Instructions retired: 5.0
- Core cycles: 5.98
- Reference cycles: 4.54
- UOPS_EXECUTED.THREAD: 2.0
- RETIRE_SLOTS: 6.0
- UOPS_MITE: 5.98
- UOPS_MS: 0.0
- UOPS_PORT_0: 0.0
- UOPS_PORT_1: 0.0
- UOPS_PORT_6: 0.0
- UOPS_PORT_49: 1.0
- UOPS_PORT_78: 1.0
- UOPS_PORT_5B: 0.0
- UOPS_PORT_5B>=2: 0.0
- UOPS_PORT_23A: 0.0
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 1.0

With unroll_count=500, no inner loop, and 5 NOPs

Code:

   0:	0f ae f8             	sfence 
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop

Init:
```
VZEROALL
```
Show nanoBench command
Results:
- Instructions retired: 6.0
- Core cycles: 6.0
- Reference cycles: 4.48
- UOPS_EXECUTED.THREAD: 1.99
- RETIRE_SLOTS: 7.0
- UOPS_MITE: 7.0
- UOPS_MS: 0.0
- UOPS_PORT_0: 0.0
- UOPS_PORT_1: 0.0
- UOPS_PORT_6: 0.0
- UOPS_PORT_49: 1.0
- UOPS_PORT_78: 1.0
- UOPS_PORT_5B: 0.0
- UOPS_PORT_5B>=2: 0.0
- UOPS_PORT_23A: 0.0
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 2.0

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: 5.94
- Reference cycles: 4.47
- UOPS_EXECUTED.THREAD: 2.1
- RETIRE_SLOTS: 2.1
- UOPS_MITE: 0.07
- UOPS_MS: 0.01
- UOPS_PORT_0: 0.0
- UOPS_PORT_1: 0.0
- UOPS_PORT_6: 0.1
- UOPS_PORT_49: 1.0
- UOPS_PORT_78: 1.0
- UOPS_PORT_5B: 0.0
- UOPS_PORT_5B>=2: 0.0
- UOPS_PORT_23A: 0.0
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 0.04

With loop_count=1000, unroll_count=10, and padding (redundant prefixes)

Code:

   0:	40                   	rex
   1:	40                   	rex
   2:	40                   	rex
   3:	40                   	rex
   4:	40 0f ae f8          	rex sfence

Init:
```
VZEROALL
```
Show nanoBench command
Results:
- Instructions retired: 1.2
- Core cycles: 5.94
- Reference cycles: 4.47
- UOPS_EXECUTED.THREAD: 2.1
- RETIRE_SLOTS: 2.1
- UOPS_MITE: 0.0
- UOPS_MS: 0.01
- UOPS_PORT_0: 0.0
- UOPS_PORT_1: 0.0
- UOPS_PORT_6: 0.1
- UOPS_PORT_49: 1.0
- UOPS_PORT_78: 1.0
- UOPS_PORT_5B: 0.0
- UOPS_PORT_5B>=2: 0.0
- UOPS_PORT_23A: 0.0
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 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: 5.94
- Reference cycles: 4.47
- UOPS_EXECUTED.THREAD: 2.01
- RETIRE_SLOTS: 2.01
- UOPS_MITE: 2.01
- UOPS_MS: 0.0
- UOPS_PORT_0: 0.0
- UOPS_PORT_1: 0.0
- UOPS_PORT_6: 0.01
- UOPS_PORT_49: 1.0
- UOPS_PORT_78: 1.0
- UOPS_PORT_5B: 0.0
- UOPS_PORT_5B>=2: 0.0
- UOPS_PORT_23A: 0.0
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 1.0

With loop_count=100, unroll_count=100, and padding (redundant prefixes)

Code:

   0:	40                   	rex
   1:	40                   	rex
   2:	40                   	rex
   3:	40                   	rex
   4:	40 0f ae f8          	rex sfence

Init:
```
VZEROALL
```
Show nanoBench command
Results:
- Instructions retired: 1.02
- Core cycles: 5.94
- Reference cycles: 4.47
- UOPS_EXECUTED.THREAD: 2.01
- RETIRE_SLOTS: 2.01
- UOPS_MITE: 0.02
- UOPS_MS: 0.0
- UOPS_PORT_0: 0.0
- UOPS_PORT_1: 0.0
- UOPS_PORT_6: 0.01
- UOPS_PORT_49: 1.0
- UOPS_PORT_78: 1.0
- UOPS_PORT_5B: 0.0
- UOPS_PORT_5B>=2: 0.0
- UOPS_PORT_23A: 0.0
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 0.01

SFENCE - Throughput and Uops

With unroll_count=500 and no inner loop

With unroll_count=500, no inner loop, and 1 NOP

With unroll_count=500, no inner loop, and 2 NOPs

With unroll_count=500, no inner loop, and 3 NOPs

With unroll_count=500, no inner loop, and 4 NOPs

With unroll_count=500, no inner loop, and 5 NOPs

With loop_count=1000 and unroll_count=10

With loop_count=1000, unroll_count=10, and padding (redundant prefixes)

With loop_count=100 and unroll_count=100

With loop_count=100, unroll_count=100, and padding (redundant prefixes)