Re: Performance regression in GTK 2.0 compared to 1.2?

[Ralph Walden <rwalden tripos com>]

I have also noticed that Gtk2.0 seems visibly slower and clunkier than
1.2.  This is so noticeable even in the simplest dialogs, that I am 
hesitant to port my application to 2.0, especially since I really don't
need any of the new gtk2.0 features.

What's going on here?  Can anything be done?


Ralph Walden


ERDI Gergo wrote:
> 
> [please CC replies to cactus cactus rulez org, thanks]
> 
> Since GTK+ 2.0 has been released for more than a month, I decided to get
> up-to-date with GTKmm and other related packages to fix Gnomoku which has
> surely bit-rotten in the last months. Back when I first ported it to GTK+
> 1.3, it was very slow, but that was before 2.0 so I guessed it had al
> kinds of debug code and unoptimized code paths and whatnot.
> 
> However, now I see the same performance problems compared to GTK+ 1.2:
> Gnomoku uses a 15x15 grid of GtkButtons (which should be a good
> stress-test), and with GTK+ 1.2 the redrawing occurs instantly (when
> raising it from below another window or resizing it for example), but with
> GTK+ 2.0 it takes a visible amount of time for the updating to occur,
> especially for the resizing case. I've also tried gconf-editor: when the
> window is maximized and I drag the vertical separator handle, huge gray
> areas can be seen flickering.
> 
> I've installed the GTK+ 2.0 and related packages from Debian so they
> aren't compiled with debug flags; the exact version is 2.0.2.
> 
> So I'm looking for ideas where I should look for finding misconfiguration
> in my setup. I don't use GDK's XFT support, the theme is the default one.
> I'd say everything related to GTK+ 2 is set to the default, so I have no
> idea what's causing this.
> 
> Any ideas welcome,
>         Gergo
> 
> --
>    .--= ULLA! =---------------------.   `We are not here to give users what
>    \     http://cactus.rulez.org     \   they want'  -- RMS, at GUADEC 2001
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-- 

Ralph E. Walden
Tripos, Inc.
rwalden tripos com