Re: Why is glxgears so slow on new install?

larryalk wrote:
I am _presuming_ that glxgears being much slower indicates something
wrong.

Speed depends on screen resolution and depth, desktop environment, other programs running in the background and if tv-out is enabled or not.


Running glxgears on the new machine using my very old xorg.conf (used
to be xf86config) glxgears give 8 times the speed (1600 fps)
as on a new xorg.conf (196 fps) created with xorgconfig and I cannot
understand why.

If you use the closed source drivers from ATi or nVidia in your old, these aren't usually not used when you re-configure Xorg/XFree86 with the configuration tools that comes with it and in many cases the open source drivers are slower specially when it comes to 3D.

Keep in mind that a badly installed driver may not use the right opengl libs, but MESA which is really slow as every 3D calculation is done in CPU instead of GPU.



The only thing I can think of is that something may have changed in X
itself but I don't know how to go about troubleshooting that.

As long as you don't have installed a development version (usually has a hign last number as 6.8.996)



//Aho
.