Has anyone else noticed excessive cpu usage when updating certain GTK+ (2.10.x) widgets? I have a piece of software that updates a set of text fields (GtkLabel's) and uses progress bars to indicate a quantity graphically, and am finding excessively high amounts of CPU usage when these calls are made. Commenting out calls to "gtk_label_set_text" and "gtk_progress_bar_set_fraction" brings cpu usage back to near zero levels.. I have profiled my code extensively using gprof/memprof and the problem is not inside of my own code fro mwhat the profiler tells me. I would NOT expect updating approx 10 labels perhaps 5-10 times per second (ie. when data chages) on a 1.8Ghz machine be so cpu hungry. I have code in place ALREADY to prevent unnecessary updates. Without that bit of code, cpu usage will easily max the machine even at lower update rates. I can only suspect that it's an internal GTK+ or pango issue, as my own custom widgets (custom automotive gauges, i.e. http://megatunix.sourceforge.net/cluster.gif) are far more graphically intensive and I can have multiple instances (about 4-6 updating at any one time for this informal test) of them updating at 30x per second and only have a minimal cpu load of about 15% Does the label or progress bar code use gtk_widget_invalidate_region? (I found that to have a major cpu penalty when developing my custom widgets so I stopped using it in my design.) -- David J. Andruczyk ____________________________________________________________________________________ Now that's room service! Choose from over 150,000 hotels in 45,000 destinations on Yahoo! Travel to find your fit. http://farechase.yahoo.com/promo-generic-14795097 _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
