MOVSB_REPE - Throughput and Uops

With RCX=0

With unroll_count=500 and no inner loop

Code:

   0:	48 c7 c1 00 00 00 00 	mov    rcx,0x0
   7:	f3 a4                	rep movs BYTE PTR es:[rdi],BYTE PTR ds:[rsi]

Show nanoBench command
Results:
- Instructions retired: 2.0
- Core cycles: 41.89
- Reference cycles: 46.22
- UOPS_EXECUTED.THREAD: 35.01
- RETIRE_SLOTS: 20.0
- UOPS_MITE: 5.0
- UOPS_MS: 45.09
- UOPS_PORT_0: 11.0
- UOPS_PORT_1: 11.0
- UOPS_PORT_2: 0.0
- UOPS_PORT_3: 0.0
- UOPS_PORT_4: 0.0
- UOPS_PORT_5: 13.0
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 2.0

With loop_count=1000 and unroll_count=10

Code:

   0:	48 c7 c1 00 00 00 00 	mov    rcx,0x0
   7:	f3 a4                	rep movs BYTE PTR es:[rdi],BYTE PTR ds:[rsi]

Show nanoBench command
Results:
- Instructions retired: 2.2
- Core cycles: 42.63
- Reference cycles: 47.04
- UOPS_EXECUTED.THREAD: 35.1
- RETIRE_SLOTS: 20.1
- UOPS_MITE: 5.1
- UOPS_MS: 45.01
- UOPS_PORT_0: 11.0
- UOPS_PORT_1: 11.0
- UOPS_PORT_2: 0.0
- UOPS_PORT_3: 0.0
- UOPS_PORT_4: 0.0
- UOPS_PORT_5: 13.1
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 2.1

With loop_count=100 and unroll_count=100

Code:

   0:	48 c7 c1 00 00 00 00 	mov    rcx,0x0
   7:	f3 a4                	rep movs BYTE PTR es:[rdi],BYTE PTR ds:[rsi]

Show nanoBench command
Results:
- Instructions retired: 2.02
- Core cycles: 42.07
- Reference cycles: 46.42
- UOPS_EXECUTED.THREAD: 35.01
- RETIRE_SLOTS: 20.01
- UOPS_MITE: 5.01
- UOPS_MS: 45.01
- UOPS_PORT_0: 11.0
- UOPS_PORT_1: 11.0
- UOPS_PORT_2: 0.0
- UOPS_PORT_3: 0.0
- UOPS_PORT_4: 0.0
- UOPS_PORT_5: 13.01
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 2.01

With RCX=1

With unroll_count=500 and no inner loop

Code:

   0:	48 c7 c1 01 00 00 00 	mov    rcx,0x1
   7:	f3 a4                	rep movs BYTE PTR es:[rdi],BYTE PTR ds:[rsi]

Show nanoBench command
Results:
- Instructions retired: 2.0
- Core cycles: 33.01
- Reference cycles: 36.42
- UOPS_EXECUTED.THREAD: 88.0
- RETIRE_SLOTS: 89.0
- UOPS_MITE: 5.0
- UOPS_MS: 84.0
- UOPS_PORT_0: 20.0
- UOPS_PORT_1: 16.0
- UOPS_PORT_2: 9.5
- UOPS_PORT_3: 9.5
- UOPS_PORT_4: 8.0
- UOPS_PORT_5: 25.0
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 2.0

With loop_count=1000 and unroll_count=10

Code:

   0:	48 c7 c1 01 00 00 00 	mov    rcx,0x1
   7:	f3 a4                	rep movs BYTE PTR es:[rdi],BYTE PTR ds:[rsi]

Show nanoBench command
Results:
- Instructions retired: 2.2
- Core cycles: 33.1
- Reference cycles: 36.53
- UOPS_EXECUTED.THREAD: 88.1
- RETIRE_SLOTS: 89.1
- UOPS_MITE: 5.1
- UOPS_MS: 84.0
- UOPS_PORT_0: 20.1
- UOPS_PORT_1: 15.9
- UOPS_PORT_2: 9.5
- UOPS_PORT_3: 9.5
- UOPS_PORT_4: 8.0
- UOPS_PORT_5: 25.1
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 2.1

With loop_count=100 and unroll_count=100

Code:

   0:	48 c7 c1 01 00 00 00 	mov    rcx,0x1
   7:	f3 a4                	rep movs BYTE PTR es:[rdi],BYTE PTR ds:[rsi]

Show nanoBench command
Results:
- Instructions retired: 2.02
- Core cycles: 33.01
- Reference cycles: 36.43
- UOPS_EXECUTED.THREAD: 88.01
- RETIRE_SLOTS: 89.01
- UOPS_MITE: 5.01
- UOPS_MS: 84.0
- UOPS_PORT_0: 20.01
- UOPS_PORT_1: 15.99
- UOPS_PORT_2: 9.5
- UOPS_PORT_3: 9.5
- UOPS_PORT_4: 8.0
- UOPS_PORT_5: 25.01
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 2.01

With RCX=2

With unroll_count=500 and no inner loop

Code:

   0:	48 c7 c1 02 00 00 00 	mov    rcx,0x2
   7:	f3 a4                	rep movs BYTE PTR es:[rdi],BYTE PTR ds:[rsi]

Show nanoBench command
Results:
- Instructions retired: 2.0
- Core cycles: 33.0
- Reference cycles: 36.42
- UOPS_EXECUTED.THREAD: 88.0
- RETIRE_SLOTS: 89.0
- UOPS_MITE: 5.0
- UOPS_MS: 84.0
- UOPS_PORT_0: 20.0
- UOPS_PORT_1: 16.0
- UOPS_PORT_2: 9.5
- UOPS_PORT_3: 9.5
- UOPS_PORT_4: 8.0
- UOPS_PORT_5: 25.0
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 2.0

With loop_count=1000 and unroll_count=10

Code:

   0:	48 c7 c1 02 00 00 00 	mov    rcx,0x2
   7:	f3 a4                	rep movs BYTE PTR es:[rdi],BYTE PTR ds:[rsi]

Show nanoBench command
Results:
- Instructions retired: 2.2
- Core cycles: 33.1
- Reference cycles: 36.53
- UOPS_EXECUTED.THREAD: 88.1
- RETIRE_SLOTS: 89.1
- UOPS_MITE: 5.1
- UOPS_MS: 84.0
- UOPS_PORT_0: 20.1
- UOPS_PORT_1: 15.9
- UOPS_PORT_2: 9.5
- UOPS_PORT_3: 9.5
- UOPS_PORT_4: 8.0
- UOPS_PORT_5: 25.1
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 2.1

With loop_count=100 and unroll_count=100

Code:

   0:	48 c7 c1 02 00 00 00 	mov    rcx,0x2
   7:	f3 a4                	rep movs BYTE PTR es:[rdi],BYTE PTR ds:[rsi]

Show nanoBench command
Results:
- Instructions retired: 2.02
- Core cycles: 33.01
- Reference cycles: 36.43
- UOPS_EXECUTED.THREAD: 88.01
- RETIRE_SLOTS: 89.01
- UOPS_MITE: 5.01
- UOPS_MS: 84.0
- UOPS_PORT_0: 20.01
- UOPS_PORT_1: 15.99
- UOPS_PORT_2: 9.5
- UOPS_PORT_3: 9.5
- UOPS_PORT_4: 8.0
- UOPS_PORT_5: 25.01
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 2.01