[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: FYI: 15x 2D performance decrease in radeon driver KMS

Am Samstag, den 29.05.2010, 10:34 +0200 schrieb Sylvain Beucler:
> Hi,
> When testing the radeon driver we'll get in Squeeze, I noticed that a
> performance regression: 2D operations are currently around 15x slower
> in the now-default KMS mode (kernel-based mode-setting).
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=583604#30
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=583653
> This means that all non-OpenGL games become unplayable or very choppy.
> While discussing with the package maintainer, I had the unsafe
> impression that they were more obsessed about enabling KMS (and
> stopping non-KMS maintenance) rather than perserving performances.
> I hope this will get fixed for Squeeze :/
Can you name some games to test? I'm running radeon+KMS+compiz ontop of
a r6xx GPU and this works perfectly - except for WebKit applications,
they scroll choppy ;)

Btw. I wouldn't count on UMS anymore because a userspace application
shouldn't interact with hardware direclty and therefor also requires the
application to run as root. Nowadays I'd considere UMS and it's
requirements as a bug.

Cheers - Fuddl

Attachment: signature.asc
Description: This is a digitally signed message part

Reply to: