gnome / xorg / nautilus / cairo / freetype desktop rendering slow

[Marcus Hartig]

Hello,

I do not know for which package to write a bug, cause...

I've a very bad and slow desktop rendering speed with the latest GNOME 
and nautilus rawhide. Moving a little gnome-terminal window is bumpy, 
when I switch to another workspace, the whole gnome desktop gets 
freezed, only the background is displayed, no icons and a delay for ca. 
3-5 sec comes to the screen, where i cannot do anything with a mouse 
click response. I had this in the past only with the firefox pop-ups, 
but now with the whole gnome desktop.

This happened with the nv (xorg) and the nVidia GFX driver, with agpgart 
or the nvida nvagp, with Fedora rawhide kernel and a vanilla, but *only* 
under the gnome desktop. With KDE all is fast and smooth, except firefox 
and thunderbird is again slow rendering fonts and bad displayed.

I've tried to turn off sub-pixel-rendering for my Dell notebook with a 
Geforce 6800 Go, played with hinting, then with the bytecode-interpreter 
enabled, but under gnome all is slow again.
Then I've tried to compare ftbench benchs, no reason found. Then 
x11perf, also no really spped diffenrence found. All logs show no errors.

Anybody know, what the reason can be? Is it cairo, the font rendering 
from freetype, gtk2 or nautilus? I really do not know, where to go 
ahead. :-(

Marcus