Re: GtkTreeView - why so SLOW?

[Olivier Fourdan <fourdan xfce org>]

Could this be related to double buffering in GTK+-2.0 ?

The fact that the CPU is taken on the X server machine might be because
the X server has to manage the buffering.

You might try to disable double buffering for GTK+-2.0 and see if things
improve.

Just my 2 Euro cents.

Cheers,
Olivier.

On Wed, 2002-06-26 at 13:13, S. Eken wrote:
> 
> 
> Hi Olaf,
> as I already posted under the subjects "Strange behaviour of
> scrollbars in GTK 2.0" and "GTK 2.0 5 times slower than 1.2" in
> gtk-devel-list I experienced a dramatic decrease in performace and a
> similar increase in CPU usage, BUT (!!!) the CPU time is eaten up by the X
> server (which, in my case is on a different (slower) machine as the one
> running the application).
> 
> It would very interesting to know if your application uses the 60% CPU
> time or if it is also the X server. Er, that is if you ARE using a
> system with X. 
> 
> Regards
> 
> Sebastian Eken
> eken bfw-online de
> 
> On 24 Jun 2002, Olaf [iso-8859-2] Fr±czyk wrote:
> 
> > Hi All,
> > Inserting rows in TreeView takes much time, and eats a lot of processor
> > time.
> > The TreeView is inserted into a scrolled Window. When I use the ruler to
> > go up to the list and down, the CPU usage is about 50-60 percent on
> > Duron 1GHz.
> > I use ListStore, and I'm inserting about 5000 rows and I have 8 columns.
> > 
> > The same thing using CList inserts in a fraction of second (including
> > fetching data from database - in TreeView I was only inserting some data
> > not getting them from database).
> > And moving the list up and down is much smoother and eats about 2-3
> > percent CPU.
> > 
> > How can I get performance similar to CList? I use gtk 2.0.5.
> > 
> > Regards,
> > 
> > Olaf Fraczyk
> > 
> > 
> > 
> > 
> > 
> > 
> > _______________________________________________
> > gtk-list mailing list
> > gtk-list gnome org
> > http://mail.gnome.org/mailman/listinfo/gtk-list
> > 
> 
> _______________________________________________
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> 
-- 
Olivier               <fourdan xfce org>            http://www.xfce.org
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