Re: Gap buffer problem?

[Eli Zaretskii]

> From: Gerd Möllmann <gerd.moellmann@gmail.com>
> Cc: emacs-devel@gnu.org,  ofv@wanadoo.es,  pipcet@protonmail.com
> Date: Wed, 11 Dec 2024 16:51:56 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Unless you have a huge (and I mean a HUGE) buffer, and some Lisp that
> > moves point, then inserts a small number of characters, then moves
> > point far away and again inserts a small number of characters, etc.,
> > I'd be very surprised if the gap buffer caused significant performance
> > problems on a modern CPU.
> >
> > Can you profile that case and post the expanded profile?  I'm always
> > happy to be wrong about performance bottlenecks, and profiles are good
> > at proving me wrong.
> 
> Maybe I'll try to investigate that further at some point. Such things
> always tend to be so time consuming...

I meant profiling with "M-x profile-start", then run your slow-down
recipe.  That should be easy and should not consume any significant
time.  Analyzing the profile could, but producing it shouldn't.