Re: speeding up GtkTreeView?

[Filip Van Raemdonck <mechanix debian org>]

On Tue, Feb 11, 2003 at 07:38:49PM +0100, 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.

Be glad :-) When I fill a 2 column treemodel with ~10000 entries, at a
time the model has no view associated with it yet (so no rendering
slowness - have you tried filling on a disconnected model?), it takes
around 15 seconds on a pII 300, 96MiB memory. Granted, it may be a lowend
machine, but not using a treemodel I can fill in the same data in a custom
data storage model in around one second.

Also, when I outputted a simple `.' on stdout per each 10 entries added,
I could see a significant slowdown as more entries were in the list
already, even when still only a few dozen dots (i.e. a few hundred items)
were printed.

I think it would be very useful for the two standard treemodel
implementations to have an API to put in a custom underlying datamodel.
Right now those default models are really only useful with small data
sets. Anything serious brings them to their knees.


Regards,

Filip

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