[Xorg] really slow X performance with Radeon 7200

[Anthony DiSante]

Michel Dänzer wrote:
> It is, but in my experience 2x and 4x don't deliver as much over 1x as
> one would hope.

Hm, I see that now.  Switching from AGP 1x to 2x only gets me increases of 
~10 FPS in glxgears, and <10 (blits?)/sec in x11perf.

>>>Does Option "XaaNoScanlineImageWriteRect" make a difference?
>>
>>Hmm, yes.  Didn't affect glxgears, but x11perf increased by 20.
> 
> Still not a lot... I guess with/out Fast Writes doesn't matter much with
> this either?

Nope, no difference.

To recap, I'm currently running 1280x1024 @ 24bit color, and getting this:

[0116][~]$ x11perf -shmput500 -repeat 2
800 reps @   8.1029 msec (   123.0/sec): ShmPutImage 500x500 square

[0116][~]$ glxgears
5492 frames in 5.0 seconds = 1098.400 FPS

Here's my X config options:

	Driver	"radeon"
	Option	"EnablePageFlip" "on"
	Option	"XaaNoScanlineImageWriteRect"

PageFlip and XaaNoScan are the only options I've been able to find which 
actually affect my performance at all.  Switching down to 16bit color (which 
isn't acceptable to me since I do some photography work), I get x11perf->170 
and glxgears->1300.

Here are some of the other stats I've collected from the net; they don't all 
specify color depth / resolution, but overall I think they do indicate that 
my hardware is capable of much more than it's currently doing.

http://lists.debian.org/debian-x/2003/09/msg00385.html
voodoo3 2000 AGP
800 reps @   7.6494 msec (   131.0/sec): ShmPutImage 500x500 square


http://bugs.xfree86.org/attachment.cgi?id=336&action=view
Radeon 7500 depth 24 XFree86 4.3.0-r2 (Gentoo)
1200 reps @   4.9725 msec (   201.0/sec): ShmPutImage 500x500 square
(and complaining that this is slow)


http://www.spinics.net/lists/xf-xpert/msg02662.html
ATI Radeon VE
800 reps @   7.1125 msec (   141.0/sec): ShmPutImage 500x500 square


http://www.vektor.ca/bugs/radeon-xvideo-data.txt
ATI 8500
2800 reps @   1.8881 msec (   530.0/sec): ShmPutImage 500x500 square
(and complaining that this is slow)


http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&threadm=535ab17d.0312260330.7594fd24%40posting.google.com&rnum=10&prev=/groups%3Fq%3Dglxgears%2Bradeon%26hl%3Den%26lr%3D%26ie%3DUTF-8%26selm%3D535ab17d.0312260330.7594fd24%2540posting.google.com%26rnum%3D10
I used to use an "original" Radeon on a 1GHz
P-III and IIRC I was getting about 1500 fps out of glxgears.

-Anthony
http://nodivisions.com/