Hi, I'm having a really weird performance problem with GtkListStore. You can find the details of the problem in the GTKpod mailing list, since I'm experiencing this problem only when I use GTKpod (I use other GTK+ programs that uses GtkTreeViews with thousands of rows and I, like gmpc, and I have no performance problems with those). Original report: http://thread.gmane.org/gmane.comp.ipod.gtkpod.user/2023/focus=2026 Real discussion: http://thread.gmane.org/gmane.comp.ipod.gtkpod.user/2028 Here is a summary (bare in mind that I might be skipping a lot of details, so please refer to the original thread). Loading ~3200 rows in a GtkListStore takes about ~52 seconds in a quad-core 2GHz. That has been "proved" (I don't know if there is any GTK+ magic calling gtkpod user code but a simple profiling doesn't show that) by just commenting this line of code (in a loop): gtk_list_store_append (get_model_as_store (model), &iter); Removing the rows takes about ~30 seconds (but I didn't check that yet by commenting the line). Following the suggestions in the "Performance Considerations" of the GtkListStore documentation[1], I changed the calls: gtk_list_store_append (list_store, iter); gtk_list_store_set (list_store, iter, ...); And replace them with: gtk_list_store_insert_with_values (list_store, iter, position, ...); But there was no difference performance-wise. This happens in my desktop box (Intel Quad-Core 2GHz, Debian unstable), but doesn't happens in my notebook (Intel Pentium M 1.7GHz, Ubuntu 10.4), which loads the ~3200 rows in a fraction of a seconds. Any ideas or suggestions on what could be going on is much appreciated. Thanks. -- Leandro Lucarella (AKA luca) http://llucax.com.ar/ ---------------------------------------------------------------------- GPG Key: 5F5A8D05 (F8CD F9A7 BF00 5431 4145 104C 949E BFB6 5F5A 8D05) ---------------------------------------------------------------------- More people die from a champagne-cork popping, than from poison spiders _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
