On 3 January 2011 21:51, Brian Phelps <lm317t@xxxxxxxxx> wrote: > I tried the plain default theme BTW and it made no discernable > difference in speed to the GTK/C implementation. I tried here and on a Ubuntu 10.10 install on a recent macbook with the Ambiance theme your example was rather slow. There was an appreciable delay (0.5s? something like that) between pressing the top-left button and the display updating. I tried running under callgrind and it does seem to be spending a lot of time somewhere deep inside libcairo (the graphics library that gtk uses to draw the screen). I don't have a dbg version of cairo handy to dig deeper. If I run with "time" and press the toggle button 10 times, I get: $ time ./main real 0m18.022s user 0m5.040s sys 0m0.300s I installed the gnome-themes-extra package, plus a thing called gtk-theme-switch, and swapped to the "redmond" theme. This is just hideous (a win95 lookalike) but does use very simple drawing operations to display the widgets. With the redmond theme, display updates are instant (or seem to be). For 10 button presses I get: $ time ./main real 0m13.190s user 0m0.360s sys 0m0.060s So, more than 10 times faster. Brian, have you tried a simple theme like this (ugly square buttons, no gradients)? Comparing a browser to gtk is perhaps a little unfair. This test is spending almost all its time in the graphics library, not in gtk, so you are really comparing the speed at which a browser can display bitmaps (rather fast) to the speed libcairo can draw gradients and anti-aliased curved lines (comparatively rather slow). Though it does seem sluggish, even so. Perhaps there are some simple changes that could be made to togglebutton, Ambiance or cairo to speed it up. I don't have time to investigate, sadly :-( John _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
