How to troubleshoot intel 3D performance?

[Vasily Khoruzhick]

On Tuesday 17 February 2009 11:46:33 Alex Bennee wrote:
> 2009/2/17 Colin Guthrie <gmane at colin.guthr.ie>:
> > 'Twas brillig, and Vasily Khoruzhick at 17/02/09 09:05 did gyre and 
gimble:
> >> On Tuesday 17 February 2009 10:12:56 you wrote:
> >>> 2009/2/16 Vasily Khoruzhick <anarsoul at gmail.com>:
> >>>> Hi, performance issue is known thing on pre-965 chipsets with new
> >>>> intel stuff (gem, uxa).
> >>>>
> >>>> I've filed bugs about them:
> >>>>
> >>>> http://bugs.freedesktop.org/show_bug.cgi?id=19873
> >>>> http://bugs.freedesktop.org/show_bug.cgi?id=19738
> >>>>
> >>>> AFAIK there's no fix at the moment, but as workaround you can use
> >>>> 2.6.27 kernel and EXA accelleration.
> >>>
> >>> Looking at the code it looks like a failure of the kernel side. Is
> >>> there a kernel tree that tracks the Linus one with the latest pending
> >>> fixes I can try?
> >>
> >> I suspect this one:
> >> git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel
> >
> > I believe the "drm-next" branch is usually the bleeding edge stuff fro
> > the next stable kernel (but I'm not 100% sure on this).
>
> I'll give that a spin.
>
> An additional data point, Dave Airle's tree (commit
> eaaffe54249d4444bb4de3631b9d968456bb0458) gave a slightly different
> error on start up:

AFAIK you also need xf86-video-intel from git to get tiling working on pre-965 
hardware with GEM. Btw, unfortunately I've hit another bug - one about huge 
BO leakage - when tried xf86-video-intel from git and recent kernels :(

Regards
Vasily
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