Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%

[Eli Zaretskii]

> Date: Mon, 6 Sep 2021 19:08:45 +0000
> Cc: monnier@iro.umontreal.ca, emacs-devel@gnu.org
> From: Alan Mackenzie <acm@muc.de>
> 
> (It is notable that redisplay is quite a bit slower in X at 54 lines
> than on a Linux console at 65 lines.)

That's expected: TTY display skips some stuff that is only needed on
GUI frames, so it's faster.

> So, based on these timings, I would suggest a new jit-lock-chunk-size of
> 1500.

Agreed.  Please be sure to include a reference to this message in the
commit log message, when you install the change.

Thanks.