Performance Issues with RV280

[8yRgR4DKpg6w at dyweni.com]

Hi,

My debugging consists of the following commands:

  X -verbose -config ./xorg.conf.new > ouput 2>&1  (to start X)
  synergyc _ipaddress_  (to allow control of test machine)
  openbox (start the window manager)
  firefox (start the browser and test scrolling)


My system configuration:
 - Pentium III 550 (512KB cache)
 - 384MB RAM
 - Video Card: ATI Technologies Inc RV280 [Radeon 9200 PRO] (rev 01)
      ATI Technologies Inc RV280 [Radeon 9200 PRO] (Secondary) (rev 01)
   (see lspci.txt attached)
 - OS is Gentoo Linux, using the X11 Portage Overlay
   (see git-hash.txt attached)
 - Kernel is 2.6.27  (see kernel-config.txt attached)
   - Loaded kernel modules: agpgart, intel_agp, drm, radeon
 - Linux Headers is 2.6.26
 - Glibc is 2.9_p20081201




> posting the /var/log/Xorg.0.log would be helpful. 

See x-log-xaa.txt attached (with XAA)
See x-log-exa.txt attached (with EXA)

Also see X-config-xaa.txt (attached)
Also see X-config-exa.txt (attached)



> from what you're
> telling it seems
> that you don't have hw video acceleration enabled and you're using
> the cpu to accelerate your xorg. you've most likely not using dri for
> some sort of error while
> loading it 

Yeah, something doesn't seem right.

(with XAA)
# glxgears 
3805 frames in 5.0 seconds = 760.863 FPS
3820 frames in 5.0 seconds = 763.980 FPS
3821 frames in 5.0 seconds = 764.196 FPS
3816 frames in 5.0 seconds = 763.128 FPS

(with EXA)
# glxgears 
3757 frames in 5.0 seconds = 751.341 FPS
3769 frames in 5.0 seconds = 753.744 FPS
3771 frames in 5.0 seconds = 754.093 FPS
3769 frames in 5.0 seconds = 753.663 FPS

See glxinfo.txt attached, it's the same for XAA and EXA
(But mainly:  "direct rendering: Yes")




> or you have some kde4 effects that consume the cpu. in this
> case also the
> list of kwin effects would be useful.
> from the log and the list of kwin4 effects we might be able to give
> you more help.

I can reproduce the scrolling / window resizing performance problems
using only X11, Openbox (minimalistic window manager) and Firefox.  No
KDE involved here (to rule out any thing kde related)



> also, if you're using radeon then you'd want to really use exa instead
> of xaa since
> it's more perfomant than xaa.

Switching to EXA provides no improvement.





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