Bug#581560: X performance degradation
On 13/05/2010 19:17, Jan Spurný wrote:
> Package: xserver-xorg-video-intel
> Version: 2:2.9.1-3
>
>
> When I've upgraded from lenny to squeeze, graphics became VERY slow compared to previous performance (in lenny). It is very annoying, but not entirely unusable.
>
> This means:
>
> 1) extremely slow scrolling (in firefox, in xterm, even "cat somelongfile" in xterm takes very long time)
> - this happens allways
>
> 2) sometimes when I switch from one virtual workspace to another, I can see only small tile in the left top corner (approximately 10% of the screen size) for some time (1-3 seconds) and then the rest of the window gets painted
> - this happens sometimes (2-3x in a day)
>
> 3) redrawing of windows is very slow when switching form one workspace to another - I can see with naked eyes how the window gets repainted from top to bottom - it's definitelly less than one second - maybe 0.1-0.2 s
> - this happens allways
>
> 4) glxgears gives ~400fps, while it gave more than 900 before..
> - this happens allways
>
> 5) in top (or htop) - X process is using a lot of CPU even when I'm only switching virtual workspaces
> - this happens allways
>
> 6) gray bars appears on screen and disapears when I switch to another workspace and back or cycle through overlapping windows on current workspace. Bars are small (from 10x50 to 10x100 pixels maybe) and I've seen 4 of them at most
> - this happens rarely (1-2x in a week)
>
> Window manager: fluxbox (happens in gnome too)
>
> I am using AMD64 Debian GNU/Linux Squeeze, kernel 2.6.32-3-amd64
>
Try a newer kernel, at least 2.6.32-4-amd64
Brice
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