Hello, I just tested the code on my older 2-cpu-core laptop and it loads lightning fast (within 0.5 or 2 seconds for both gtk2 and gtk3.). So it must be some peculiarities with my i7 8-core laptop, or with the Ubuntu 12.04 itself.
Here are also GtkPerf tests on both these machine. 1) GtkPerf test on this super 8-cpu-core laptop. CPU: Intel® Core™ i7-2670QM CPU @ 2.20GHz × 8. RAM: 8GB. GPU: GeForce GT 525M. The combo loads very slowly on this. $ gtkperf GtkPerf 0.40 - Starting testing: Fri May 25 15:12:54 2012 GtkEntry - time: 0.03 GtkComboBox - time: 1.47 GtkComboBoxEntry - time: 0.97 GtkSpinButton - time: 0.09 GtkProgressBar - time: 0.07 GtkToggleButton - time: 0.65 GtkCheckButton - time: 0.09 GtkRadioButton - time: 0.13 GtkTextView - Add text - time: 0.50 GtkTextView - Scroll - time: 0.05 GtkDrawingArea - Lines - time: 0.52 GtkDrawingArea - Circles - time: 0.62 GtkDrawingArea - Text - time: 0.21 GtkDrawingArea - Pixbufs - time: 0.04 --- Total time: 5.45 --------------------------------------- 2) GtkPerf test on my old 2-core-cpu laptop. CPU: Genuine Intel(R) CPU T2080 @ 1.73GHz. RAM: 2GB. GPU: Advanced Micro Devices [AMD] nee ATI RC410 [Radeon Xpress 200M] The combo appears almost instantly on this laptop. Especially fast on gtk2, but gtk3 is quick too. $ gtkperf GtkPerf 0.40 - Starting testing: Fri May 25 15:38:56 2012 GtkEntry - time: 0.09 GtkComboBox - time: 3.31 GtkComboBoxEntry - time: 2.77 GtkSpinButton - time: 0.30 GtkProgressBar - time: 0.23 GtkToggleButton - time: 1.29 GtkCheckButton - time: 0.23 GtkRadioButton - time: 0.38 GtkTextView - Add text - time: 1.30 GtkTextView - Scroll - time: 0.46 GtkDrawingArea - Lines - time: 0.96 GtkDrawingArea - Circles - time: 1.70 GtkDrawingArea - Text - time: 0.92 GtkDrawingArea - Pixbufs - time: 0.19 --- Total time: 14.15 These GtkPerf tests do not support the "bad video adapter" theory. The results are as expected. I will later test Fedora and maybe LinuxMint 13 on this super machine. Maybe I kill Ubuntu! And BTW: The actual application will be a desktop-radio. It loads station names and urls from a large xml-file (Ref: http://home.online.no/~osmoma//radio/all_radio_channels.xml ). The radio stations are <Group>ed by countries, genres of music etc, and I will let user search among these channel groups. The xml-file itself loads without delay. Ok, thanks so far. All well. Kindly Osmo Moma Antero On Thu, May 24, 2012 at 10:14 PM, Michael Cronenworth <m...@cchtml.com> wrote: > Osmo Antero wrote: >> Adding rows to a combo box with a GtkListStore is immensely slow. >> Is it right that adding 500 rows can take upto 10 seconds and the GUI >> freezes? > > I have similar hardware but with the NVIDIA driver so it only freezes > for about 2 seconds on my system. > > [snip] >> What is your opinion? >> Should I use a thread to add data after the GUI has been displayed? > > It looks like a GTK3 performance issue. Running your app against GTK2 > results in the combo widget displaying instantly. Another reason why I > have not jumped from GTK2 to GTK3 yet. > > You should file a bug with this test case. > _______________________________________________ > gtk-app-devel-list mailing list > gtk-app-devel-list@gnome.org > https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list -- // moma http://www.futuredesktop.org _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
