[PD] opengl performance on osX ; Re: four PS3 Eye on Mac Pro and Pd-ext and GEM

cyrille henry ch at chnry.net
Sat May 21 18:21:37 CEST 2011

Le 21/05/2011 18:16, Jack a écrit :
> Le samedi 21 mai 2011 à 12:06 -0400, Mathieu Bouchard a écrit :
>> On Sat, 21 May 2011, cyrille henry wrote:
>>> from my experience, Gem is 2 times faster on the same computer using
>>> ubuntu than osX. thanks to nvidia profiling tools, Nicolas pointed that
>>> gem is limited to 50% usage of the GPU. there is certainly a limitation
>>> somewhere on osX preventing application to use full performance of the
>>> hardware. so, you applications are slower, but the interface will always
>>> be smooth...
>> There's a setting in Gnome/Ubuntu for choosing no effects, normal effects,
>> extra effects. This may make a difference. What kind of performance
>> difference do you get when you change that setting ? It might explain part
>> of what happens on OSX, perhaps (where, afaik, you don't have such a
>> setting, and effects level is somewhere between ubuntu's normal and extra
>> levels).
> Yep, of course, you have to choose 'no effect' in 'Appearance' to get
> best frame rate. MacOSX should have this option too.
i havent made heavy benchmarck, but i dont see lot's of difference between affect and no effect. (except the fact that i can't be sync on the screen with effect on)

> ++
> Jack
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