[MPlayer-dev-eng] Re: Compile options

[Andrew Savchenko]

> Here are my results and the appropriate patch:
>
> Fantastic Four Trailer, 720p on Athlon XP 2600+ running SuSE10.0
> gcc version 4.0.2 20050901 (prerelease) (SUSE Linux)
> time mplayer fanta4_720p.mov -benchmark
> (multiple tries, no lost frames, best results)
>
> -O4:
> BENCHMARKs: VC:  69.572s VO:   8.038s A:   2.032s Sys:  79.365s = 
> 159.007s BENCHMARK%: VC: 43.7541% VO:  5.0551% A:  1.2780% Sys:
> 49.9129% = 100.0000%
>
> real    2m39.531s
> user    1m12.721s
> sys     0m0.652s
>
> -O2:
> BENCHMARKs: VC:  67.075s VO:   7.877s A:   1.984s Sys:  82.081s = 
> 159.017s BENCHMARK%: VC: 42.1811% VO:  4.9537% A:  1.2475% Sys:
> 51.6176% = 100.0000%
>
> real    2m39.629s
> user    1m9.408s
> sys     0m0.680s

I misunderstand you. According to your test -O2 is slightly worth than 
-O4 (159.017s vs 159.007s); the lesser is time, the faster is program.
Moreover, real time for -O2 is also slightly higher (2m39.629s vs 
2m39.531s). Then why you enable -O2 by default? 

Howere, how about mean deviation value?
Can you provide results with errors?
Result without error is meaningless.

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