[Mplayer-users] i586 vs. i686

[Arpi]

Hi,

> It's the Question that drives us, Alex Kanavin :
> > > > your hardware/software?
> > > Very good question :)
> > My question concerning -march -mcpu test results is not bad either :-)
> Yes, they don't really seem to matter. Happy? :)

Ok. I've just did this benchmark, using teh brand-new -benchmark option:

-rw-rw-rw-   1 root     root      2087466 Jan 30 10:21 1800.avi

mplayer -osdlevel 0 -nosound -benchmark 1800.avi -vo null -pp 15
...
VIDEO:  [divx]  640x352  24bpp  23.98 fps  1865.1 kbps (227.7 kbyte/s)
[V] filefmt:3  fourcc:0x78766964  size:640x352  fps:23.98  ftime:=0.0417
Found video codec: [odivx] drv:3 (OpenDivX (MPEG-4 v2))
VO: [null] 640x352 => 640x352  YV12

compiler:
gcc version 2.95.2 19991024 (release)

system:
celeron2-600 at 900 (100mhz fsb), Abit BE6-2 v2.0 mb, 256MB RAM (PC133)
Matrox G400MAX (but -vo null!!), SB Live! (but -nosound!!!)

results:
i686+mmx+mmx2+sse:
BENCHMARKs: V:   5.041s VO:   0.001s A:   0.000s Sys:   0.015s =    5.056s
BENCHMARK%: V: 99.6948% VO:  0.0174% A:  0.0000% Sys:  0.2878% = 100.0000%
i686+mmx:
BENCHMARKs: V:   5.088s VO:   0.001s A:   0.000s Sys:   0.015s =    5.104s
BENCHMARK%: V: 99.6861% VO:  0.0188% A:  0.0000% Sys:  0.2951% = 100.0000%
i686:
BENCHMARKs: V:   5.495s VO:   0.001s A:   0.000s Sys:   0.015s =    5.510s
BENCHMARK%: V: 99.7202% VO:  0.0164% A:  0.0000% Sys:  0.2634% = 100.0000%
i586+mmx:
BENCHMARKs: V:   5.916s VO:   0.001s A:   0.000s Sys:   0.015s =    5.932s
BENCHMARK%: V: 99.7273% VO:  0.0139% A:  0.0000% Sys:  0.2588% = 100.0000%
i586:
BENCHMARKs: V:   6.602s VO:   0.001s A:   0.000s Sys:   0.015s =    6.618s
BENCHMARK%: V: 99.7606% VO:  0.0147% A:  0.0000% Sys:  0.2247% = 100.0000%
i486:
BENCHMARKs: V:   6.680s VO:   0.001s A:   0.000s Sys:   0.015s =    6.695s
BENCHMARK%: V: 99.7649% VO:  0.0126% A:  0.0000% Sys:  0.2225% = 100.0000%

there is no difference between sse and non-sse code, because opendivx
codec doesn't use SSE asm.

but don't tell me that 20% (5.088s vs. 5.916s) difference between
i686+mmx and i586+mmx doesn't matter!


A'rpi / Astral & ESP-team

--
mailto:arpi at thot.banki.hu
http://esp-team.scene.hu

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