[MPlayer-dev-eng] MPEG-1/2 decoding benchmarks

[Michael Niedermayer]

Hi

On Monday 18 April 2005 15:06, Diego Biurrun wrote:
> Hi everybody!
>
> Some time ago I promised to benchmark libmpeg2 0.3.1 vs 0.4.0 and here
> are the numbers finally.  I've included FFmpeg as well while I was at
> it.
>
> I repeated every benchmark run 10 times and took the best result.
> Since the process is (supposedly) deterministic, this should be a fair
> measurement.  I used "-quiet -vo null -nosound -benchmark" as common
> options for all runs, they are left out below.  I ran the benchmarks
> on the (framebuffer) console and stopped all processes except syslogd,
> klogd and getty while running the benchmarks, no console output was
> generated, I used
>
> mplayer <options> <file> | grep BENCHMARK >> results
>
> to record the benchmarking results.  For FFmpeg I also benchmarked
> with "-lavdopts idct=4 and "-lavdopts fast".
>
> I used 1.0pre7 for the libmpeg2 0.4.0 and FFmpeg benchmarks, for
> libmpeg2 0.3.1 I used pre7 as well but replaced the libmpeg2 directory
> and vd_libmpeg2.c with the version from the 20040801 CVS snapshot, a
> day before the upgrade.
>
> The movies I used can be found in
>
> http://mplayerhq.hu/~diego/benchmarks/
>
> they were:
>
> bomb.mpeg    - MPEG-1 176x144
> heist60.mpeg - MPEG-1 352x240
> dvd.mpeg     - MPEG-2 720x576
>
> I tested on two different systems, my desktop and notebook
>
> desktop:
> 500MHz AMD K6-III+
> 512MB SD-RAM 133
>
> notebook:
> 1500MHz G4 with AltiVec
> 512MB PC2700 (333MHz) DDR SDRAM
>
> If you have further suggestions or things I should do differently,
> speak up.  I _could_ also test on a Pentium MMX 233, but I doubt the

maybe try a different gcc version, i didnt benchmark ffmpeg with 2.95 lately, 
but with 3.3 ffmpeg beats libmpeg2 by 10% on many files like 
matrixbench_mpeg2.mpg, while on others it lost miserably by a similar amount

CPU: Advanced Micro Devices Duron Spitfire (Family: 6, Stepping: 1)
mplayer -benchmark -nosound -quiet -vo null ~/matrixbench_mpeg2.mpg  -vc 
mpeg12
BENCHMARKs: VC:  45.662s VO:   0.036s A:   0.000s Sys:   3.309s =   49.007s
BENCHMARKs: VC:  45.820s VO:   0.037s A:   0.000s Sys:   3.389s =   49.246s

ffmpeg12
BENCHMARKs: VC:  40.860s VO:   0.024s A:   0.000s Sys:   3.958s =   44.842s
BENCHMARKs: VC:  40.701s VO:   0.024s A:   0.000s Sys:   3.887s =   44.612s

CPU: Intel Celeron 2/Pentium III Coppermine,Geyserville (Family: 6, Stepping: 
1)
mpeg12:
BENCHMARKs: VC:  75.501s VO:   0.053s A:   0.000s Sys:   6.823s =   82.377s

ffmpeg12:
BENCHMARKs: VC:  71.496s VO:   0.038s A:   0.000s Sys:   6.954s =   78.488s

[...]
-- 
Michael

"nothing is evil in the beginning. Even Sauron was not so." -- Elrond