From: "Gerd Möllmann" <gerd.moellmann@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: Kai Ma <justksqsf@gmail.com>, 71454@debbugs.gnu.org, jb@jeremybryant.net
Subject: bug#71454: 30.0.50; Performance issues with font selection
Date: Mon, 10 Jun 2024 18:42:35 +0200 [thread overview]
Message-ID: <m2tti0da10.fsf@pro2.fritz.box> (raw)
In-Reply-To: <86sexl7y2f.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 10 Jun 2024 15:59:52 +0300")
Eli Zaretskii <eliz@gnu.org> writes:
>> From: Kai Ma <justksqsf@gmail.com>
>> Date: Mon, 10 Jun 2024 14:35:50 +0200
>> Cc: Jeremy Bryant <jb@jeremybryant.net>,
>> 71454@debbugs.gnu.org
>>
>>
>>
>> > On Jun 10, 2024, at 13:55, Eli Zaretskii <eliz@gnu.org> wrote:
>> >
>> >> Cc: 71454@debbugs.gnu.org
>> >> From: Kai Ma <justksqsf@gmail.com>
>> >> Date: Mon, 10 Jun 2024 00:17:55 +0200
>> >>
>> >>
>> >>> On Jun 10, 2024, at 00:10, Jeremy Bryant <jb@jeremybryant.net> wrote:
>> >>>
>> >>> Would you be able to provide a self-contained series of steps starting
>> >>> from emacs -Q?
>> >>
>> >> On my machine it is extremely easy to reproduce by simply:
>> >>
>> >> 1. emacs -Q
>> >> 2. Switch to *scratch*
>> >> 3. Copy the provided text into *scratch*
>> >> 4. Emacs will freeze for 17 seconds or so, and it cannot be interrupted by C-g
>> >
>> > I cannot reproduce this, I get an almost instantaneous redisplay with
>> > those characters.
>> >
>> > When your Emacs eventually displays the text, how many characters are
>> > shown as boxes with hex code, and which ones are those?
>>
>> None are hex code here. They eventually get displayed, but it takes a long time.
>
> Then it definitely sounds like macOS specific. Does anyone know how
> Emacs on macOS searches for fonts, and whether there are any
> font-caching facilities, either in Emacs or by the OS?
Don't know, but the display of the strings mentioned is instantaneous
here too (macOS 14.5), with (length (font-family-list)) == 281.
Maybe use the Font Book app and see if the fonts are all valid? (Start
Font Book, choose All Fonts, select them all with Command + A, then
context menu on the selectoin and choose Validate.)
next prev parent reply other threads:[~2024-06-10 16:42 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-09 18:56 bug#71454: 30.0.50; Performance issues with font selection Kai Ma
2024-06-09 22:10 ` Jeremy Bryant via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-06-09 22:17 ` Kai Ma
2024-06-09 22:34 ` Jeremy Bryant via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-06-10 2:14 ` Kai Ma
2024-06-10 12:04 ` Eli Zaretskii
2024-06-09 23:10 ` Jim Porter
2024-06-10 2:18 ` Kai Ma
2024-06-10 11:53 ` Eli Zaretskii
2024-06-10 16:31 ` Jim Porter
2024-06-10 17:35 ` Eli Zaretskii
2024-06-10 11:55 ` Eli Zaretskii
2024-06-10 12:35 ` Kai Ma
2024-06-10 12:59 ` Eli Zaretskii
2024-06-10 16:42 ` Gerd Möllmann [this message]
2024-06-10 17:36 ` Kai Ma
2024-06-10 18:05 ` Gerd Möllmann
2024-06-10 11:58 ` Eli Zaretskii
2024-06-10 12:34 ` Kai Ma
2024-06-10 13:03 ` Eli Zaretskii
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