Re: Low redisplay performance (23 regression)

[Eli Zaretskii]

> From: Juanma Barranquero <address@hidden>
> Date: Tue, 21 Apr 2009 14:36:28 +0200
> Cc: address@hidden, Chong Yidong <address@hidden>,
>       address@hidden
> 
> On Tue, Apr 21, 2009 at 05:15, Eli Zaretskii <address@hidden> wrote:
> 
> > And I see no difference on Windows.
> 
> I see it. On my setup, doing line-by-line scrolling, Emacs 22.1

For the record, I compared with Emacs 22.3.

> is able to scroll a large file (for example, lisp/ChangeLog) keeping up
> with the keyboard typematic rate without breaking a sweat. Emacs 23 is
> unable and every now and then resorts to recentering (which I hate).

Is this in "emacs -Q"?

Anyway, is the slow-down you see close to the OP's reported factor of
almost 3?  Or is it just slow-down?