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https://bugs.freedesktop.org/show_bug.cgi?id=9400
------- Additional Comments From [EMAIL PROTECTED] 2006-12-21 23:59 -------
(In reply to comment #11)
> You seem to have my same radeon model! so for sure you can test that xorg eats
> cpu even when using vim [...]
Sure, I can't live without gkrellm. ;) I just know why CPU usage goes up in that
case and don't think it's unreasonable given the circumstances.
> Ok so if I'm not wrong since the lack of RENDER is the bottleneck, this must
> imply that both fglrx and the radeon driver for r_200 cards does not support
> it,
> while nvidia proprietary driver and intel driver support it.
Correct for fglrx and nvidia, but not the others. Intel chipsets tend to be
affected less by the lack of acceleration due to the shared memory architecture.
If there's really no difference with an R200 card, then maybe you're using
sub-pixel anti-aliasing, which XAA can't accelerate (although recent versions of
EXA can). Try disabling that or maybe even using a bitmap font.
> Are you trying to tell me that the video card does not emit enough
> interrupts, so the cpu is busy to wait for them?
It's possible that the r300 driver uses busy loops in some cases where it could
use interrupts or sleeps. Feel free to file another bug for that if there isn't
one yet.
(In reply to comment #12)
> Option "XAANoOffscreenPixmaps" "on" #to make compiz work
This disables most 2D acceleration with XAA, so you should not enable it when
you're not using compiz.
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