graphics acceleration

Bruce Dubbs bdubbs at swbell.net
Sun Nov 3 09:54:10 PST 2002


Jochen Schröder wrote:

> Bruce Dubbs wrote:
>
>> Jochen Schröder wrote:
>>
>>> Hi guys,
>>> I just noticed something odd. I ran glxgears on my host (SuSE 8.0) 
>>> and my lfs (cvs from end of september) system and on my host it runs 
>>> with ~3000 FPS on my lfs it runs with ~1880 FPS. I'm using the 
>>> Nvidia Driver on both systems, the one on the lfs is a newer 
>>> version. Could there be other reasons for the difference than the 
>>> different drivers? Usually I'd
>>> expect the newer driver to be faster.
>>> Any ideas anybody? 
>>
>>
>>
>> The only thing I can think of is optimizations in the drivers or X 
>> itself.
>>  -- Bruce
>>
> I thought of this as well, must be X then, optimization wont have much 
> effect on the nvidia driver considering that the module is binary, I 
> guess. Maybe I'm going to compile X with less optimization next time, 
> I used '-O3 -march=athlon-xp -msse -mfpmath=sse -fomit-frame-pointers' 
> maybe the O3 is actually slowing the X-server down. 

I got about 2500 fps on a 2GHz P4 laptop, but I was using RH8 (for now). 
 I did compile the NVidia drivers from source, but used their default 
optimizations.
  -- Bruce


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