From: Eli Zaretskii <eliz@gnu.org>
To: Alan Mackenzie <acm@muc.de>
Cc: monnier@iro.umontreal.ca, emacs-devel@gnu.org
Subject: Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%
Date: Sat, 04 Sep 2021 18:36:32 +0300 [thread overview]
Message-ID: <835yvgwdxb.fsf@gnu.org> (raw)
In-Reply-To: <YTORqWPX9lEyOBZ9@ACM> (message from Alan Mackenzie on Sat, 4 Sep 2021 15:32:57 +0000)
> 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.
next prev parent reply other threads:[~2021-09-04 15:36 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-01 17:33 bug-reference-prog-mode slows down CC Mode's scrolling by ~7% Alan Mackenzie
2021-09-01 17:44 ` Eli Zaretskii
2021-09-01 17:55 ` Alan Mackenzie
2021-09-01 18:01 ` Eli Zaretskii
2021-09-01 18:20 ` Alan Mackenzie
2021-09-01 18:28 ` Eli Zaretskii
2021-09-01 19:19 ` Alan Mackenzie
2021-09-01 20:59 ` Stefan Monnier
2021-09-02 6:26 ` Eli Zaretskii
2021-09-02 16:57 ` Alan Mackenzie
2021-09-02 18:46 ` Stefan Monnier
2021-09-02 19:24 ` Alan Mackenzie
2021-09-02 21:08 ` Alan Mackenzie
2021-09-03 6:16 ` Eli Zaretskii
2021-09-03 12:30 ` Stefan Monnier
2021-09-03 12:38 ` Eli Zaretskii
2021-09-03 22:25 ` Stefan Monnier
2021-09-04 6:13 ` Eli Zaretskii
2021-09-04 13:36 ` Stefan Monnier
2021-09-04 13:55 ` Eli Zaretskii
2021-09-04 14:44 ` Stefan Monnier
2021-09-04 14:56 ` Eli Zaretskii
2021-09-04 15:55 ` Stefan Monnier
2021-09-04 16:12 ` Eli Zaretskii
2021-09-04 16:24 ` Stefan Monnier
2021-09-04 16:28 ` Eli Zaretskii
2021-09-04 16:40 ` Stefan Monnier
2021-09-03 6:10 ` Eli Zaretskii
2021-09-03 10:47 ` Alan Mackenzie
2021-09-03 11:24 ` Eli Zaretskii
2021-09-03 16:15 ` Alan Mackenzie
2021-09-03 12:27 ` Stefan Monnier
2021-09-03 12:19 ` Stefan Monnier
2021-09-03 12:35 ` Eli Zaretskii
2021-09-03 16:52 ` Alan Mackenzie
2021-09-03 20:51 ` Alan Mackenzie
2021-09-04 6:09 ` Eli Zaretskii
2021-09-04 14:50 ` Alan Mackenzie
2021-09-04 15:00 ` Stefan Monnier
2021-09-04 15:32 ` Alan Mackenzie
2021-09-04 15:36 ` Eli Zaretskii [this message]
2021-09-04 15:43 ` Alan Mackenzie
2021-09-04 15:48 ` Eli Zaretskii
2021-09-04 16:05 ` Alan Mackenzie
2021-09-04 16:15 ` Eli Zaretskii
2021-09-06 10:46 ` Alan Mackenzie
2021-09-06 11:10 ` Eli Zaretskii
2021-09-06 19:08 ` Alan Mackenzie
2021-09-06 19:23 ` Eli Zaretskii
2021-09-18 11:37 ` Alan Mackenzie
2021-09-18 11:59 ` Eli Zaretskii
2021-09-06 21:59 ` andrés ramírez
2021-09-07 19:47 ` Alan Mackenzie
2021-09-07 17:57 ` andrés ramírez
2021-09-06 13:24 ` Stefan Monnier
2021-09-04 16:06 ` Stefan Monnier
2021-09-04 16:23 ` Eli Zaretskii
2021-09-04 16:39 ` Stefan Monnier
2021-09-04 17:19 ` Eli Zaretskii
2021-09-04 17:47 ` Stefan Monnier
2021-09-04 18:10 ` Eli Zaretskii
2021-09-04 18:40 ` Stefan Monnier
2021-09-11 12:49 ` Eli Zaretskii
2021-09-11 17:04 ` Stefan Monnier
2021-09-11 17:17 ` Eli Zaretskii
2021-09-11 18:00 ` Stefan Monnier
2021-09-11 18:16 ` Eli Zaretskii
2021-09-11 19:55 ` Stefan Monnier
2021-09-12 3:51 ` Eli Zaretskii
2021-09-12 16:41 ` Stefan Monnier
2021-09-12 16:53 ` Eli Zaretskii
2021-09-12 17:41 ` Stefan Monnier
2021-09-12 17:55 ` Eli Zaretskii
2021-09-12 21:11 ` Stefan Monnier
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