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Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%
From: |
Eli Zaretskii |
Subject: |
Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7% |
Date: |
Sat, 04 Sep 2021 18:36:32 +0300 |
> Date: Sat, 4 Sep 2021 15:32:57 +0000
> From: Alan Mackenzie <acm@muc.de>
> Cc: Eli Zaretskii <eliz@gnu.org>, emacs-devel@gnu.org
>
> > Maybe to speed things up, another option is to grow the chunk size
> > a bit.
>
> Maybe. An advantage of a small chunk size is that fontifying a single
> screen can be done with a maximum 499 bytes "inefficiency" off the end
> of a screen. If we were to increase jit-lock-chunk-size to, say 2000,
> more of the next screen would be getting fontified, perhaps wastefully.
> I don't know how important this is. Maybe I should try it.
>
> Indeed. With jit-lock-chunk-size at 2000, time-scroll on xdisp.c takes:
>
> (current code): 16.4s
> (new proposed code): 16.1s
>
> .. This speed up may well be particular to CC Mode.
>
> Let's try jit-lock-chunk-size at 8000:
>
> (current code): 15.1s
> (new proposed code): 15.1s
>
> .. So, yes, it would seem a larger chunk size is advantageous for CC
> Mode.
How large (in lines and columns) is your window? The above numbers
are only meaningful with the window size.
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, (continued)
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, Alan Mackenzie, 2021/09/03
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, Alan Mackenzie, 2021/09/03
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, Eli Zaretskii, 2021/09/04
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, Alan Mackenzie, 2021/09/04
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, Stefan Monnier, 2021/09/04
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, Alan Mackenzie, 2021/09/04
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%,
Eli Zaretskii <=
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, Alan Mackenzie, 2021/09/04
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, Eli Zaretskii, 2021/09/04
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, Alan Mackenzie, 2021/09/04
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, Eli Zaretskii, 2021/09/04
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, Alan Mackenzie, 2021/09/06
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, Eli Zaretskii, 2021/09/06
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, Alan Mackenzie, 2021/09/06
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, Eli Zaretskii, 2021/09/06
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, Alan Mackenzie, 2021/09/18
- Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%, Eli Zaretskii, 2021/09/18