Re: Scrolling xdisp.c. Room for optimisation in syntax.c/CC Mode.

[Ulrich Mueller]

>>>>> On Sun, 19 Oct 2014, Eli Zaretskii wrote:

>> Tests were done with emacs -Q -nw in an xterm, 80 columns times
>> 80 lines.

> Did you test in a GUI session as well?

Yes, but with smaller window size (80 x 40):

   no-odd-xdisp.c:
   22.3:      953 scrolls, total time = 16.126529455184937s.
   23.4:      942 scrolls, total time = 18.194140195846558s.
   24.3:      942 scrolls, total time = 49.906872510910034s.
   24.4-rc1:  942 scrolls, total time = 49.15416240692139s.
   25.0.50:   942 scrolls, total time = 50.233097314834595s.

   xdisp.c:
   22.3:      953 scrolls, total time = 16.09666872024536s.
   23.4:      942 scrolls, total time = 18.084166049957275s.
   24.3:      942 scrolls, total time = 53.44005608558655s.
   24.4-rc1:  942 scrolls, total time = 67.30650329589844s.
   25.0.50:   942 scrolls, total time = 64.4020631313324s.

Ulrich