radeon EXA performance questions

[Michel Dänzer]

On Tue, 2008-07-01 at 18:14 -0400, Ross Vandegrift wrote:
> On Tue, Jul 01, 2008 at 11:53:29AM -0400, Ross Vandegrift wrote:
> > That was only a slightly educated guess :)
> > My Xorg.0.log reports Xserver 1.4.0.90, and radeon module 4.3.0.
> > 
> > If I get the time today, I'll try upgrading the Xorg in Debian
> > unstable.
> 
> Debian unstable's versions were only marginally newer, reporting the
> same version in Xorg.log.

Yeah, you'd have to wait for 1.5 (RCs) to enter experimental or try an
upstream snapshot.


> (WW) RADEON(0): Failed to set up write-combining range (0xc0000000,0x10000000)

Looks like there's no write combining for video RAM. That certainly
doesn't help, but it shouldn't be a huge problem; there shouldn't be too
many direct CPU writes to video RAM. It definitely doesn't explain any
difference between EXA and XAA.


-- 
Earthling Michel Dänzer           |          http://tungstengraphics.com
Libre software enthusiast         |          Debian, X and DRI developer