Xorg 7.0-rc1 and EXA (radeon 9200)

[Pierre Ossman]

Carsten Haitzler (The Rasterman) wrote:
> 
> here's the rough way things pan out for my laptop system: 64mb video ram.
> somehow to get xrender to work properly i have to also keep driand opengl
> enabled. this eats up 32mb of video ram (half of whatever you have) instantly
> as pre-allocated for dri clients. now since i run 1600x1200 at 32bpp the
> framebuffer is just a bit under 8mb alone. 24mb spare video ram left now. now
> given that i like a desktop wallpaper - this is another (just under) 8mb of
> video ram for the wallpaper pixmap. we have now 16mb of video ram left. that
> 16mb now has to be used to store pixmaps PER WINDOW whichbasically has space
> for about 2 fullscreen windows wort of pixels - so once you have opened 2
> screenfulls of windows you have now run out of video ram. remember xcomposite
> and pixmaps per windows is VIDEO RAM HUNGRY. it will eat your vram for
> breakfast and ask about lunch before it's even done.
> 

Thank you! Finally some information that got things running smoothly
here. Turned off dri and now everything runs fine here. Even with all
the eye candy that one can find.  ;)

It would seem that something leaks memory though. If I keep mapping and
unmapping windows I gradually see the pixmap memory rising. When I hit
the size of my graphics card (64 MB) things deteriorate very quickly.
Who's the most likely culprit? X or xcompmgr? The latter seems more
likely since the pixmaps are freed once I kill xcompmgr.

Rgds
Pierre