Re: control-center 2.13.90 released
- From: Pat Suwalski <pat suwalski net>
- To: Owen Taylor <otaylor redhat com>
- Cc: Desktop Development List <desktop-devel-list gnome org>
- Subject: Re: control-center 2.13.90 released
- Date: Tue, 31 Jan 2006 12:10:03 -0500
Owen Taylor wrote:
I think the first step is for someone to simply spend a little time
figuring out what is slow:
- Scaled images
- Solid color backgrounds?
30 seconds of experimentation shows me that scaling and filling are
slow, while tiling is very fast. The very strange discrepancy is that
when setting an image smaller than the screen, centering is slow!
If we are scaling images *via Cairo* that is known to be slow with
older X servers; if investigation proves that actually is the problem,
it can be worked around.
All of my observations are on X.org 7.0.0 with the radeon driver. There
were previously (6 months ago?) bigger performance problems, but when I
opened a freedesktop bug about it, the whole XaaOffscreenPixmaps issues
was brought up. I don't know how that concluded. Adding the Exa
extension slows down my r200 card another 2-3 times. But that is getting
It used to be relatively simple to spot gtk/gdk drawing problems. Now,
it's difficult to say where the problems are, given the
For people interested, there is a good discussion in a now-closed bug
that addresses some of the slow drawing issues, which I think at this
point are history:
But I wonder if the relevant functions don't need to be revisited? Does
anyone have any suggestions on how to profile these issues?
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