Re: Snappy GUI response

Around 11 o'clock on Jul 4, Owen Taylor wrote:

> Figuring out a window manager protocol extension so that GTK+ could
> always track where a window on the screen is without synchronous
> roundtrips would definitely be nice, though one round trip per configure
> isn't going to make a *huge* difference.

It's not one-per-configure; the ICCCM doesn't assure the position of the
frame will remain constant while the window is unmoving, so Gtk+ performs
this expensive dance every time Mozilla queries the position of the frame;
which it does with some regularity because of ECMA-script semantics.

> One exception to this is terminal output speed, which depending on the
> terminal implementation can end up being pretty much a pure benchmark
> of how fast the system can composite AA characters.

Yes, scrolling long documents has finally become somewhat limited by text 
output performance -- and that is actually more limited by frame buffer 
read speed than anything else...

-keith