Powerbook RV350 Performance

Daniel Kasak dkasak at nusconsulting.com.au
Wed Apr 18 16:02:17 PDT 2007

Andrew J. Barr wrote:

> Hash: SHA1
> I'll spare you all a long description of my frustrations trying to get
> decent 2D and (hopefully, eventually) 3D performance out of the Radeon
> Mobility in my Powerbook. Instead, I'll just ask what I am supposed to
> expect out of the radeon/r300 drivers at this time (xf86-video-ati
> 6.6.191; mesa 6.5.2; xorg-server and what options are
> recommended in xorg.conf for this configuration.
> I'd love to be able to run a compositing window manager but when I try
> that the scrolling speed in Firefox makes me want to throw things.

The r300 driver doesn't ( currently ) have accelerated compositing via 
EXA like the r200 driver. You'd be better off with my previous 
Powerbook, with a Radeon 9250! Late xorg-server builds, such as the one 
you're using ( I think ... anyway stick to the latest ... ) have 
exa-damagetracking, which *just* makes compositing usable on my r300, 
but it does push the CPU usage up lots ( and therefore the temperature 
... I'm on a notebook as well ). Anyway, it's not *quite* ready for me 
for normal desktop usage.

But beryl runs quite well with AIGLX. Surprisingly, it's not as fluid as 
on my Intel i845G at work ( clearly the Radeon has much better fill 
rate, but it stutters a bit when beryl activates various effects ). But 
anyway, it's still quite good.

> As a final question I'd like to know what is in store for the r3xx open
> driver in the future, to the extent that is known.

See my previous post about funding Radeon driver development. A couple 
of the developers listed their own list of features they'd like to work 
on. This gives you some idea.

Daniel Kasak
IT Developer
NUS Consulting Group
Level 5, 77 Pacific Highway
North Sydney, NSW, Australia 2060
T: (+61) 2 9922-7676 / F: (+61) 2 9922 7989
email: dkasak at nusconsulting.com.au
website: http://www.nusconsulting.com.au

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