Re: Performance (was Re: control-center 2.13.90 released)

[Thomas Wood <thos gnome org>]

Jan de Groot wrote:
> On Tue, 2006-01-31 at 15:31 +0000, Thomas Wood wrote:
>   
> >    
> > It'd be interesting if you could try changing your theme (I assume you 
> > are using Clearlooks) to Glider and seeing what difference that makes. 
> > The Glider theme uses the Smooth engine, which is not currently using 
> > cairo. Clearlooks on the other hand, is now using cairo almost 
> > exclusively. If there is a significant difference in speed then we may 
> > need to look at holding back cairo enabled gtk-engines in GNOME, at 
> > least until significant speed improvements are made to cairo.
> >
> > -Thomas
> >     
>
> I switched back from Clearlooks cairo version to the Mist theme:
> everything is nice and fast now. With cairo-clearlooks, clicking a
> cleared number in gnome-mines, I could follow the bombsquad clearing the
> field of known not-mine squares. With Mist, these fields get uncovered
> instantly.
>   

Actually, Mist is already using cairo, so your test only shows that Mist 
is a faster theme than Clearlooks. This was hopefully already known, 
since Mist is a lot simpler than Clearlooks. One of the biggest problems 
for Clearlooks in terms of speed, is it's use of gradients, and that has 
always been an issue whether it has used GDK or cairo. To get a 
definitive answer, we need people to test is the difference between 
using Clearlooks with cairo (gtk-engines 2.7.x) and with GDK 
(gtk-engines 2.6.x).

-Thomas