Re: speeding up GtkTreeView?

[Olaf Frączyk <olaf cbk poznan pl>]

On Tue, 2003-02-11 at 19:38, Joop Stakenborg wrote:
> I have done a comparison between the deprecated GtkCList widget and the
> new GtkTreeView in gtk+-2.0. Loading 10.000 rows consisting of 3 columns
> each takes 0.3 seconds with GtkClist and 4.8 second with GtkTreeView.
Hi,

I have the same problem.
Tried gtk 2.2 but no difference.
So, at now I use CList, and I know that in future I'll have to rewrite
it :((
BTW, compare processor load during scrolling CList with 5000 entries
between gtk-1.2 and gtk-2.x. 
Below are results from my mail sent at 26 Jun 2002 to gtk-app-devel:

> > > >
So from my point of view:
CList: 
loads very fast on GTK 1.2 and 2.0. 
Scrolling takes a few CPU with gtk 1.2 but a lot with gtk 2.0

TreeView:
Loads very slow on GTK 2.0.
Eats a lot of CPU when scrolling.


Below are results.
They are for the same application compiled with GTK 2.0.5.
------------------------------
With TreeView:
Scrolling up and down list.
CPU:
user: 60 %
system: 8 %

Processes:
X: 10 %
application: 50 %

When loading list:
CPU:
user: 97%
system: 2%

Processes:
X: 0.1 - 3 %
application: up to 99 %

------------------------------
With CList:
Scrolling up and down list:

CPU:
user: 60 %
system: 8 %

Processes:
X: 22 %
application: 43 %

When loading list:

Not enough time to check with top :)
Below 3% X and 3% application.
----------------------------------
Gtk 1.2 CList
Scrolling up and down list:

Processes:
X: 9 %
application: 4 %

When loading list:

Not enough time to check with top :)
Below 3% X and 3% application.

Regards,

Olaf