On Sat, 21 Jan 2006 10:10:13 -0500
Michael Lorenz <macallan@netbsd.org> wrote:

> Hello,
> 
> > Booting NetBSD-3.99.7 which was installed on the second hard disk on
> > 18 Aug 2005 and there is no delay when resizing windows in GTK2
> > applications, i.e. everything is performing very well. It's the same
> > machine, same hardware, just a different NetBSD version.
> > 
> > I'm going to copy packages from NetBSD-3.99.7 and install them on
> > NetBSD-3.0 and see if that makes a difference, in case it's the
> > problem with the latest version of GTK2. But I have a strong feeling
> > it's something to do with NetBSD-3.0
> 
> Which gtk2 versions are you using? is it by any chance 2.8.something on
> one box and 2.6 or older on the other? The kernel shouldn't have much
> influence on graphics performance ( I guess you're using some sort of
> Creator? )
> GTK 2.8 switched to a completely different rendering subsystem which
> really needs Xrender to perform halfway acceptable. 
> So, if you're using a Creator and didn't update X for a few months
> please do so - I committed a driver ( and a load of bugfixes ) that
> supports Xrender and hardware-accelerated alpha-blending, performance is
> MUCH better with that. It's still fairly new though, and not really
> ready for a stable release.
> 
> have fun
> Michael
> 

OK that explains a lot then. I'll update to NetBSD-current.

Thanks