Benchmark

[john-peterson]

Benchmark

Files

The benchmark files are in

Dropbox

• benchmark.txt
• benchmark_summary.txt

SkyDrive

• benchmark.xlsx

  Configuration

  normal

GFXBackend = DX11
EFBScale = 6
MaxAnisotropy = 3
EFBAccessEnable = True
DSPHLE = False

normal_athread

DSPThread = False

fast

GFXBackend = DX11
EFBScale = 2
MaxAnisotropy = 3
EFBAccessEnable = False
EFBCopyEnable = False
DSPHLE = False

fast_hle

DSPHLE = True

Movies

Length

The target length is

• fixed because that makes the LLE and HLE movie comparable (because it draws the same geometry and audio)
• one lap or 2 000 frames because that's adequate

  Deterministicity

Producing dual thread benchmarks to

• measure performance during play rather than when input synchronisation isn't important f.e. during an intro
• compare LLE and HLE when video is threaded

is made difficult for some games because of desynchronisation described in this post that cause f.e. the controlled object to hit a wall repeatedly

Audio

Why's

• HLE compared to LLE despite audio threading: 1,13

  Video

Why's

• DX9 compared to DX11: 1,08

  GFZE01

Why's

• HLE compared to LLE: 1,16
• dx9 compared to dx11: 1,03
• unthreaded LLE compared to threaded: not less than 0,95

  GTEE01

Why's

• HLE compared to LLE: 1,29
• dx9 compared to dx11: 1,25
• unthreaded LLE compared to threaded: not less than 0,96

  SMNE01

Why's

• OpenMP compared to non-OpenMP: ,65

[john-peterson]

Benchmark

Log

What's the performance impact of disabled logs?

./dolphin -BC log -e twist_road.dtm

print 5 k ERROR_LOG per s (to mintty, at 50 fps) but there's no meaningful performance impact from these ERROR_LOG when they're disabled because

• if its use of one core is 50 E3 / 3,5 E9 = 1,5 E-5 (if one disabled ERROR_LOG use around 10 instructions in the CPU emulation thread, and a 3,5 GHz CPU does 3,5 G instructions/s)
• according to this test

AddList: unknown count of vertices found        
with    without 
43,0    42,8    
44,0    40,9    
41,0    43,0    
42,7    42,2    0,99

[john-peterson]

GFZE01 empty 8 vertex triangle list

./dolphin -BC log -e twist_road.dtm

return this message

10:15:185 Src\IndexGenerator.cpp:90 E[Video]: AddList: unknown count of vertices found

Ignoring the last 2 vertices don't have an impact because they're zero according to this log

14:21:896 Src\VertexLoaderManager.cpp:129 N[Video]: RunVertices: unknown count of vertices found 0, 2, 8
14:21:899 Src\VertexLoaderManager.cpp:132 N[Video]: Vertex 1: 0,0, 0,0, 0,0
14:21:959 Src\VertexLoaderManager.cpp:132 N[Video]: Vertex 2: 0,0, 0,0, 0,0
14:21:960 Src\VertexLoaderManager.cpp:132 N[Video]: Vertex 3: 0,0, 0,0, 0,0
14:21:960 Src\VertexLoaderManager.cpp:132 N[Video]: Vertex 4: 0,0, 0,0, 0,0
14:21:960 Src\VertexLoaderManager.cpp:132 N[Video]: Vertex 5: 0,0, 0,0, 0,0
14:21:961 Src\VertexLoaderManager.cpp:132 N[Video]: Vertex 6: 0,0, 0,0, 0,0
14:21:961 Src\VertexLoaderManager.cpp:132 N[Video]: Vertex 7: 0,0, 0,0, 0,0
14:21:962 Src\VertexLoaderManager.cpp:132 N[Video]: Vertex 8: 0,0, 0,0, 0,0