[MPlayer-dev-eng] [PATCH] Optimize vo_macosx

[Alexander Strange]

On Jul 3, 2006, at 7:47 PM, Nicolas Plourde wrote:

>
> My test result on a ~45 min video. Im not convinced of the gain.
>
> BENCHMARKs: VC: 329.183s VO: 483.574s A:   0.000s Sys:  56.945s =   
> 869.702s
> BENCHMARK%: VC: 37.8501% VO: 55.6022% A:  0.0000% Sys:  6.5477% =  
> 100.0000%
>
> BENCHMARKs: VC: 324.940s VO: 488.833s A:   0.000s Sys:  55.542s =   
> 869.315s
> BENCHMARK%: VC: 37.3789% VO: 56.2320% A:  0.0000% Sys:  6.3891% =  
> 100.0000%


Oh. The other reason, of course, is that you're probably on at least  
a G5. They have enormous memory bandwidth, so the memcpy per frame  
wouldn't show up as much. The G4 and earlier are very bandwidth- 
starved, so unnecessary copies ruin things.

My numbers were on HD video on this G4 laptop, so I suppose that was  
about the greatest difference there could be.

Still, the way it actually increases is weird.