bug#52914: 29.0.50; pgtk menu lag using mouse - very slow for menu item to appear/disappear

[bhrgunatha]

Sorry for the delay, I had to learn how to debug emacs first.

According to gdb it only hits that callback function 6 times (after starting emacs, selecting menu items a couple of times, then using the menu to quit emacs).
I'm not using wayland yet and was just experimenting with the new pgtk feature and the only issue I had was the menu lag.

I'm not sure what else I can offer. 

I will continue with the regular X build, thanks.

On 31/12/2021 21:40, Po Lu wrote:

> bhrgunatha <bhrgunatha@gmail.com> writes:
>
> > Using the new pgtk flag to compile, menu bar items are very slow to
> > appear using a mouse e.g. clicking the Tools menu, the menu appears
> > after about a second delay.
> >       
> Could you please set a breakpoint on `menu_bar_button_pressed_cb' in
> gtkutil.c, and see how many times it is called?
>
> That callback being triggered too rapidly seems to be the most likely
> problem.
>
> > Using --with-x-toolkit=gtk3 instead of --with-pgtk does not lag.
> >       
> By the way, are you running Emacs on Wayland?
>
> If not, I recommend you use the regular X build instead, since it is
> simply superior to the PGTK port.
>
> Thanks.
>