From: Eli Zaretskii <eliz@gnu.org>
To: Kirill Ignatiev <kirill.ignatiev@gmail.com>,
Dmitry Antipov <dmantipov@yandex.ru>
Cc: swiesner@lunaryorn.com, 19266@debbugs.gnu.org
Subject: bug#19266: 24.4; Font-related window redrawing delays on OS X
Date: Thu, 11 Dec 2014 19:45:35 +0200 [thread overview]
Message-ID: <8361dit70g.fsf@gnu.org> (raw)
In-Reply-To: <CACe-pWxphaJdwqnb8qXuqZJwDKH4nc2HP1Rv7t=Xyi41Vh2y4g@mail.gmail.com>
> Date: Wed, 10 Dec 2014 18:50:01 -0500
> From: Kirill Ignatiev <kirill.ignatiev@gmail.com>
> Cc: Sebastian Wiesner <swiesner@lunaryorn.com>, 19266@debbugs.gnu.org
>
> Can someone familiar with emacs' font internals check if this makes
> sense as the cause of the problem, please? I really don't understand
> how/where fonts are stored/cached/used; I did read
> font/fontset/macfont/alloc.c, but I'm still unclear.
Unfortunately, we don't have too many experts on this, to put it
mildly. Dmitry, could you please take a look?
> To summarize: My interpretation of what's happening is that when emacs
> looks at some fonts to see if they contain a certain characters and
> neither of them does, emacs *does not* cache the fonts. So the next
> time redisplay happens after those fonts are garbage-collected, emacs
> has to load the fonts all over again, causing a noticeable redisplay
> delay.
This does sound like the truth, although I'm not sure.
> For testing, how do I turn off font garbage collection, so that no
> font is ever closed?
Comment out the call to cleanup_vector?
> How do I trigger font garbage collection manually?
Did you try "M-x garbage-collect RET"?
> Is this the right mailing list for this?
Yes, it is.
next prev parent reply other threads:[~2014-12-11 17:45 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-04 7:13 bug#19266: 24.4; Font-related window redrawing delays on OS X Kirill Ignatiev
2014-12-04 7:30 ` Eli Zaretskii
2014-12-04 7:41 ` Kirill Ignatiev
2014-12-04 8:03 ` Eli Zaretskii
2014-12-04 8:20 ` Kirill Ignatiev
2014-12-04 9:55 ` Sebastian Wiesner
2014-12-04 10:17 ` Eli Zaretskii
2014-12-04 10:19 ` Sebastian Wiesner
2014-12-07 5:50 ` Kirill Ignatiev
2014-12-07 16:09 ` Eli Zaretskii
2014-12-10 23:50 ` Kirill Ignatiev
2014-12-11 17:45 ` Eli Zaretskii [this message]
2014-12-12 2:10 ` Kirill Ignatiev
2014-12-12 8:06 ` Eli Zaretskii
2014-12-17 1:35 ` Kirill Ignatiev
2014-12-17 2:13 ` Kirill Ignatiev
2014-12-12 8:29 ` Sebastian Wiesner
2014-12-12 9:33 ` Kirill Ignatiev
2014-12-12 10:56 ` Eli Zaretskii
2022-04-30 15:44 ` Lars Ingebrigtsen
2022-05-02 16:22 ` Kirill Ignatiev
2022-05-03 9:05 ` Lars Ingebrigtsen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=8361dit70g.fsf@gnu.org \
--to=eliz@gnu.org \
--cc=19266@debbugs.gnu.org \
--cc=dmantipov@yandex.ru \
--cc=kirill.ignatiev@gmail.com \
--cc=swiesner@lunaryorn.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).