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Re: 78% speed up in CC Mode scrolling.

From: Eli Zaretskii
Subject: Re: 78% speed up in CC Mode scrolling.
Date: Sun, 03 Jul 2016 22:27:54 +0300

> Date: Sun, 3 Jul 2016 18:29:57 +0000
> From: Alan Mackenzie <address@hidden>
> 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%.

Please show your benchmark code, and please tell which compiler
options were used to build Emacs.  Otherwise, I don't know how to
reproduce this.

> If you frequently hold down C-v or M-v, you are recommended to set
> `fast-but-imprecise-scrolling' to non-nil.

What does this recommendation have to do with the speedup?


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