Benchmark DirectFB

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Benchmarks

The DirectFB example suites include benchmark 'df_dok'. We have ran this benchmark on the following platform:

Platform CPU Clock I/F System RAM Graphics Card Kernel Version
A Renesas SH-4 240MHz CPU 64MB SMI SM501 software drawing 2.4.20 CELF
A* SMI SM501 enable 2D acceleration 2.4.20 CELF
B Renesas SH-4 240MHz PCI 64MB Matrox Millenium 2.4.19
C Intel Celeron 450MHz PCI 128MB Matrox Mystique 2.4.20
D Intel Celeron 450MHz PCI 128MB Matrox Millenium 2.4.20
F Intel Celeron 450MHz AGP 128MB Matrox G450 2.4.20
E Intel Pentium4 2.4GHz AGP 1GB Matrox G450 2.4.20
G Intel CE2110 1Ghz CPU 100Mb software drawing 2.6.16
G* Intel GDL accelerated 2.6.16


Benchmarks Platform
A A* B C D E F G G*
Anti-aliased Text [KChars/sec] 29.22 29.41 20.40 24.83 23.96 607.39 750.00 84 45
Anti-aliased Text (blend) [KChars/sec] 7.52 7.47 6.12 16.52 16.66 613.00 752.85 25 19
Fill Rectangles [MPixel/sec] 14.07 221.49 63.63 116.37 53.25 892.88 849.22 34 105
Fill Rectangles (blend) [MPixel/sec] 1.64 1.67 1.20 3.18 3.26 236.38 225.84 3 6
Fill Triangles [MPixel/sec] 12.25 93.87 93.87 108.79 50.51 748.55 730.24 32 1
Fill Triangles (blend) [MPixel/sec] 1.63 1.61 1.17 3.13 3.17 223.32 218.24 4 0.026
Draw Rectangles [KRects/sec] 1.81 16.01 10.67 12.95 8.57 59.53 36.27 11 3.6
Draw Rectangles (blend) [KRects/sec] 0.52 0.57 0.43 0.83 0.84 25.40 17.09 2.142 0.194
Draw Lines [KLines/sec] 7.10 66.98 61.33 62.60 48.84 281.86 162.40 41 16
Draw Lines (blend) [KLines/sec] 2.33 2.43 1.94 3.69 3.70 127.29 80.04 10 7
Blit [MPixel/sec] 8.12 100.49 38.68 53.75 32.56 435.02 398.84 25 64
Blit colorkeyed [MPixel/sec] 1.63 102.16 39.19 58.69 32.54 445.20 421.97 28 36
Blit with format conversion [MPixel/sec] 4.04 4.13 3.59 18.11 17.79 203.38 193.26 13 38
Blit from 32bit (alphachannel blend) [MPixel/sec] 1.05 1.05 0.82 2.71 2.71 171.32 158.10 3 36
Blit from 8bit palette [MPixel/sec] 3.54 2.35 3.20 17.40 17.38 17.28 95.17 - -
Blit from 8bit palette (alphachannel blend) [MPixel/sec] 1.02 0.90 0.81 2.67 2.71 3.55 5.53 - -
Stretch Blit [MPixel/sec] 12.17 83.50 7.06 83.50 47.61 210.32 220.77 25 21
Stretch Blit colorkeyed [MPixel/sec] 7.46 7.43 4.20 46.17 46.30 211.97 221.64 26 20


After enabling 2D acceleration in A* environment, the graphics benchmark score improves. It looks like even embedded processor like SH-4 can be used when DirectFB can use hardware acceleration. So a graphics library would be essential in a graphical system.

For G* (Intel CE2110) environment, just basic operations like opaque rectangle and blits are really optimized, some operations are much slower and we can notice rendering artifacts/bugs. So take care, possible you'll have to fallback to software rendering on such platform. Cyan-colored cells are supposed to be accelerated.