[MPlayer-dev-eng] Re: Compile options
Bircoph at list.ru
Sat Sep 16 18:01:11 CEST 2006
> 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)
> 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
> 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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