Dumb glxgears query
 

This could be a silly question, but it's probably worth asking just on the off-chance...

How fast are the glxgears supposed to spin? Last time I remember using the program (some years ago), the gears would spin extremely quickly. But on this system they seem slow - the green gear takes over two seconds to rotate once. Has glxgears changed? Or is there a problem with my setup? The FPS is reported by glxgears as around 4000 FPS.

I am using the x86_64 'nvidia' driver (8762) with X.org, TwinView enabled, for an XFX 6600GT on 2.6.17 (but I have always seen the same thing on 2.6.16 and possibly 2.6.12). From /proc/driver/nvidia/registry it appears that NvAGP is set to '3', although I have it set to '0' in my xorg.conf (is this a problem in itself?).

Apart from that, graphics seem 'choppy'. Dragging any window around on the desktop is very jumpy. Maybe I am wrong about glxgears but I have a feeling something isn't right with my setup.

Thanks for any help,
--
Steven Chamberlain
steven@pyro.eu.org

Re: Dumb glxgears query
 

Can't comment on the rest of your query but since Xorg 7.0, the gears in glxgears spin at a specific (slow) speed so that isn't a problem :)

Re: Dumb glxgears query
 

Your monitor can display lets say only 85 frames a second, so most frames aren't displayed. When the frames are taken at a 'bad' moment it can happen that the demo looks slow.

Re: Dumb glxgears query
 

It's a GOTCHA. I had the very same 'issue'. The bloody code was changed in xorg 6.9.0/7.0...

... read my thread here with the why's:

http://www.nvnews.net/vbulletin/show...3&postcount=20


Nick

Re: Dumb glxgears query
 

He isn't using the updated glxgears. The updated one requires you to use '-iacknowledgetthatthistoolisnotabenchmark' switch in order to show the fps. He is using good old glxgears and the 'issue' are just the bad sample moments of the frames he sees.

Re: Dumb glxgears query
 

There seem to be several versions of glxgears floating around. The version that Gentoo installs (upstream) seems to have neither the -iacknowledgethatthistoolisnotabenchmark option nor the constant speed patch. The version in the (deprecated) freedesktop.org CVS repository has the constant rate patch but no -iacknowledgethatthistoolisnotabenchmark. Debian and Ubuntu seem to have both.