SFENCE - Port Usage

With blocking instructions for port '4':

Code:

   0:	4d 89 46 40          	mov    QWORD PTR [r14+0x40],r8
   4:	4d 89 46 48          	mov    QWORD PTR [r14+0x48],r8
   8:	4d 89 46 50          	mov    QWORD PTR [r14+0x50],r8
   c:	4d 89 46 58          	mov    QWORD PTR [r14+0x58],r8
  10:	4d 89 46 60          	mov    QWORD PTR [r14+0x60],r8
  14:	4d 89 46 68          	mov    QWORD PTR [r14+0x68],r8
  18:	4d 89 46 70          	mov    QWORD PTR [r14+0x70],r8
  1c:	4d 89 46 78          	mov    QWORD PTR [r14+0x78],r8
  20:	4d 89 86 80 00 00 00 	mov    QWORD PTR [r14+0x80],r8
  27:	4d 89 86 88 00 00 00 	mov    QWORD PTR [r14+0x88],r8
  2e:	4d 89 86 90 00 00 00 	mov    QWORD PTR [r14+0x90],r8
  35:	4d 89 86 98 00 00 00 	mov    QWORD PTR [r14+0x98],r8
  3c:	0f ae f8             	sfence

Init:
```
VZEROALL
```
Show nanoBench command
Results:
- Instructions retired: 13.0
- Core cycles: 17.85
- Reference cycles: 17.29
- UOPS_PORT_4: 13.0

⇨ One μop that can only use port '4'

With blocking instructions for ports {'2', '3'}:

Code:

   0:	f2 41 0f f0 46 40    	lddqu  xmm0,[r14+0x40]
   6:	f2 41 0f f0 4e 50    	lddqu  xmm1,[r14+0x50]
   c:	f2 41 0f f0 56 60    	lddqu  xmm2,[r14+0x60]
  12:	f2 41 0f f0 5e 70    	lddqu  xmm3,[r14+0x70]
  18:	f2 41 0f f0 a6 80 00 	lddqu  xmm4,[r14+0x80]
  1f:	00 00 
  21:	f2 41 0f f0 ae 90 00 	lddqu  xmm5,[r14+0x90]
  28:	00 00 
  2a:	f2 41 0f f0 b6 a0 00 	lddqu  xmm6,[r14+0xa0]
  31:	00 00 
  33:	f2 41 0f f0 be b0 00 	lddqu  xmm7,[r14+0xb0]
  3a:	00 00 
  3c:	f2 45 0f f0 86 c0 00 	lddqu  xmm8,[r14+0xc0]
  43:	00 00 
  45:	f2 45 0f f0 8e d0 00 	lddqu  xmm9,[r14+0xd0]
  4c:	00 00 
  4e:	f2 45 0f f0 96 e0 00 	lddqu  xmm10,[r14+0xe0]
  55:	00 00 
  57:	f2 45 0f f0 9e f0 00 	lddqu  xmm11,[r14+0xf0]
  5e:	00 00 
  60:	f2 45 0f f0 a6 00 01 	lddqu  xmm12,[r14+0x100]
  67:	00 00 
  69:	f2 41 0f f0 46 40    	lddqu  xmm0,[r14+0x40]
  6f:	f2 41 0f f0 4e 50    	lddqu  xmm1,[r14+0x50]
  75:	f2 41 0f f0 56 60    	lddqu  xmm2,[r14+0x60]
  7b:	f2 41 0f f0 5e 70    	lddqu  xmm3,[r14+0x70]
  81:	f2 41 0f f0 a6 80 00 	lddqu  xmm4,[r14+0x80]
  88:	00 00 
  8a:	f2 41 0f f0 ae 90 00 	lddqu  xmm5,[r14+0x90]
  91:	00 00 
  93:	f2 41 0f f0 b6 a0 00 	lddqu  xmm6,[r14+0xa0]
  9a:	00 00 
  9c:	f2 41 0f f0 be b0 00 	lddqu  xmm7,[r14+0xb0]
  a3:	00 00 
  a5:	f2 45 0f f0 86 c0 00 	lddqu  xmm8,[r14+0xc0]
  ac:	00 00 
  ae:	f2 45 0f f0 8e d0 00 	lddqu  xmm9,[r14+0xd0]
  b5:	00 00 
  b7:	f2 45 0f f0 96 e0 00 	lddqu  xmm10,[r14+0xe0]
  be:	00 00 
  c0:	0f ae f8             	sfence

Init:
```
VZEROALL
```
Show nanoBench command
Results:
- Instructions retired: 25.0
- Core cycles: 12.78
- Reference cycles: 12.49
- UOPS_PORT_3: 12.54
- UOPS_PORT_2: 12.51

⇨ One μop that can only use ports {'2', '3'}