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Re: 78% speed up in CC Mode scrolling.

From: martin rudalics
Subject: Re: 78% speed up in CC Mode scrolling.
Date: Thu, 07 Jul 2016 18:17:32 +0200

> Scrolling through emacs-25's xdisp.c, I get the following timings:
>    emacs-25 branch: 45.529s
>    master branch:   25.529s
> This is a speedup of around 78%.

Thank you.  Using the attached test2.el on frame.c, I get the following
results for emacs -Q (‘foofoo’ scrolls up profiling ‘foo-1’, ‘foobar’
scrolls down profiling ‘bar-1’).


               Call Count  Elapsed Time  Average Time
foo-1          169         109.15699999  0.6458994082
bar-1          169         113.032       0.6688284023


foo-1          169          45.28100000  0.2679349112
bar-1          169          53.406       0.3160118343

These look even better than yours (I have no idea which formula you used
to derive a speedup of "78%" though).


Attachment: test2.el
Description: application/emacs-lisp

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