intel graphics driver slow (was: slightly OT - X performance benchmark)
David Malcolm
dmalcolm at redhat.com
Tue Jun 2 22:38:04 UTC 2009
On Tue, 2009-06-02 at 15:32 -0700, David L wrote:
> On Tue, Jun 2, 2009 at 2:44 PM, Kevin DeKorte wrote:
> > On 06/02/2009 03:37 PM, David L wrote:
> >> My f11 system seems extremely slow when running
> >> some 2D gtk/cairo apps. Is there a benchmark
> >> suite that is yum installable for testing X performance?
> <snip>
> >>
> >
> > Personally I find that gtkperf is useful although not an exact science.
> > I like to run it with the following options
> >
> > gtkperf -c 500 -a
> >
> Thanks Kevin,
>
> That helped confirm my suspicions. Here's my output with
> the intel driver on my Intel 82865G:
[snip various results]
> GtkDrawingArea - Circles - time: 44.60
> GtkDrawingArea - Text - time: 15.80
[snip]
> Same computer using the vesa driver:
> GtkPerf 0.40 - Starting testing: Tue Jun 2 15:19:09 2009
[snip]
>GtkDrawingArea - Circles - time: 1.43
> GtkDrawingArea - Text - time: 1.31
[snip]
Looks like the circles/text tests are the most obvious differences,
though most tests show marked differences.
> I was running at a higher resolution using the intel driver,
> but it's nearly 10x slower. Is this expected from this
You may want to try "sysprof"; it's an excellent tool for figuring out
where slowdowns are occurring across the whole system (e.g. of the
combined gtk app/X server system, as in this case). See:
http://live.gnome.org/Sysprof
> driver? Until very recently it was hanging my system,
> so maybe it's still not mature?
(I have no idea about this)
Hope this is helpful
Dave
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