[Bug 1193] Very slow X-Video with ATI Radeon

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https://bugs.freedesktop.org/show_bug.cgi?id=1193        
   




------- Additional Comments From jasmin-bugfd at pacifica.ch  2004-12-20 11:26 -------
The recently added Xv DMA support made things better with tvtime (~30% cpu are 
now idle and the X process takes about ~48% CPU). But I somehow think that's 
slower than it should be. 
 
I'm observing the following issues that are maybe linked to this: 
Some SDL applications display so slow that I can see them redrawing. 
A strange thing is, that sometimes when X is freshly running, the speed is a 
lot slower than normal. Then running glxinfo helps. 
I believe it has something to do with glxinfo (and other apps) "hanging" X for 
some seconds when X has just started up and its the first GL app running. It 
seems the driver is loading the R200 microcode then. 
 
Also strange things happend with xcompmgr: 
- Starting xcompmgr -c in an Eterm on Desktop 1 (running KDE): 
  Eterm's move around fast - no problems. 
- Switch to Desktop 2: 
  Here's a fullscreen Konqueror window. I move it around and speed is good. 
- Swiching back to Desktop 1: 
  Things are okay 
- Switch again to Desktop 2 (switching takes alot longer): 
  Konqueror window rendering & moving is slow now 
 
If I continue this, the speed of the Eterm's stays good, but switching 
desktops/the Konqueror window are slow. Running 'glxinfo' now makes things 
extremely slower. 
         
   
   
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