Re: How will cairo influence GTK's performance?

[Daniel Campos <daniel campos tiscali es>]

Pango seems to be quite slow, I agree with that...

Clemens Eisserer escribió:

> Hello,
>
> First of all please do not interpret this post as a troll post - it is
> absolutly not my intention to blame anybody for the great work on gtk
> or to spread FUD or whatever.
> The following lines are just experiences of mine, so not valid in
> general and not ment as troll stuff...
>
> I am using GTK since a long time (both coding gtk applications and
> using gtk based application) and I think GTK is a great toolkit -
> however I am experiencing performance problems since GTK-2.0 and first
> I thought this is just because tons of unoptimized code since so many
> functions have been re-implemented.
> However now we are at 2.6.? and I still do not see significant
> performance improvements.
>
> I also have seen several applications which are cross-toolkit or which
> switched from gtk-1.2 to 2.x.y and they all perform better with
> gtk-1.2 or the other toolkit.
> The GTK2-port of SWT/Eclipse for example is the slowest port of all
> swt ports (win32, mac, motif, fox, gtk2) and since mozilla switched to
> gtk2 their interface is really sluggish on my Authlon-800 although I
> have an 2d accerlated nvidia card.
> The bug-report which (among others) mainly adresses GTK2 performance
> problems is the report with the second most votes of all eclipse bugs:
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=37683
> They also profiled GTK and found out that for eclipse the problem
> mainly lies in pango.
> I already tried recompiling GTK not thread safe but it didn't help a lot :-(
>
> I would be really interrested in helping to speed up GTK, however I am
> a bit concerned wether tuning the x11 based backend does still make
> sence now when GTK is switching to cairo as rendering backend. (are
> there any numbers how cairo does influence gtk's performance?)
> Are there any know performance problems where man-power is needed?
>
> Thank you in advance, lg Clemens
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