Re: Emacs's set-frame-size can not work well with gnome-shell?

[tumashu]

>  > Unfortunately, I'm getting reports that the Lucid build is much slower
>  > than GTK at least for some others:
> 
> I can't comment on that.  I only have non-optimized Lucid builds here
> and they are much too slow to do anything with child frames at all.

Today I test lucid emacs again,  maybe the slowness is  posn-at-point

(benchmark 1000 '(posn-at-point (point)))

"Elapsed time: 0.684959s"

for posframe call posn-at-point