From: Eli Zaretskii <eliz@gnu.org>
To: Stefan Monnier <monnier@IRO.UMontreal.CA>
Cc: sva-news@mygooglest.com, 15876@debbugs.gnu.org, dmantipov@yandex.ru
Subject: bug#15876: 24.3.50; Highly degraded performance between rev 114715 and 115006
Date: Fri, 13 Dec 2013 20:55:19 +0200 [thread overview]
Message-ID: <83sitw4m3s.fsf@gnu.org> (raw)
In-Reply-To: <jwv8uvo3dig.fsf-monnier+emacsbugs@gnu.org>
> From: Stefan Monnier <monnier@IRO.UMontreal.CA>
> Cc: Jan Djärv <jan.h.d@swipnet.se>,
> sva-news@mygooglest.com, 15876@debbugs.gnu.org, dmantipov@yandex.ru
> Date: Fri, 13 Dec 2013 11:50:49 -0500
>
> > . I also tried a different approach: compact only those font-entities
> > that don't match any font that is still used by some face on some
> > frame. (I used font_match_p for that.) This seems to work, except
> > that font_match_p is evidently not safe enough to be used in the
> > middle of GC -- I got crashes a few times. When it did work, it
> > again prevented the compaction, as if the compacting code were not
> > there at all.
>
> Maybe a better way goes along the lines of:
> - every time we use a font, we set an "in_use" bit.
The problem is not with fonts, it is with font-entities (a different
type of object) stored within the font cache.
I couldn't find any code that marks them "in use" or records them in
some other Lisp object (which would have prevented them from being
GC'ed).
> - every now and then (ha ha!), we let the GC collect fonts that don't
> have their "in_use" bit set.
You didn't say who will reset that bit.
next prev parent reply other threads:[~2013-12-13 18:55 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-12 15:32 bug#15876: 24.3.50; Highly degraded performance between rev 114715 and 115006 Sebastien Vauban
2013-11-12 17:11 ` Glenn Morris
[not found] ` <wzwqkdfsts.fsf-iW7gFb+/I3LZHJUXO5efmti2O/JbrIOy@public.gmane.org>
2013-11-12 19:13 ` Sebastien Vauban
2013-11-13 11:43 ` Dani Moncayo
[not found] ` <mailman.5954.1384343055.10748.bug-gnu-emacs@gnu.org>
2013-11-13 13:58 ` Sebastien Vauban
[not found] ` <mailman.5925.1384283656.10748.bug-gnu-emacs@gnu.org>
[not found] ` <mailman.5925.1384283656.10748.bug-gnu-emacs-mXXj517/zsQ@public.gmane.org>
2013-11-13 14:04 ` Sebastien Vauban
2013-11-13 16:11 ` Eli Zaretskii
[not found] ` <83fvr01du4.fsf-mXXj517/zsQ@public.gmane.org>
2013-11-13 20:23 ` Sebastien Vauban
2013-11-13 20:35 ` Eli Zaretskii
2013-11-14 3:05 ` Glenn Morris
[not found] ` <jxeh6j1y4x.fsf-iW7gFb+/I3LZHJUXO5efmti2O/JbrIOy@public.gmane.org>
2013-11-14 10:05 ` Sebastien Vauban
[not found] ` <mailman.6048.1384423574.10748.bug-gnu-emacs@gnu.org>
2013-11-14 10:13 ` Sebastien Vauban
2013-11-14 17:04 ` Glenn Morris
[not found] ` <mailman.6048.1384423574.10748.bug-gnu-emacs-mXXj517/zsQ@public.gmane.org>
2013-11-19 22:52 ` Sebastien Vauban
2013-11-20 1:47 ` Stefan Monnier
2013-11-20 3:53 ` Eli Zaretskii
2013-11-20 3:48 ` Eli Zaretskii
[not found] ` <mailman.6579.1384912163.10748.bug-gnu-emacs@gnu.org>
[not found] ` <mailman.6579.1384912163.10748.bug-gnu-emacs-mXXj517/zsQ@public.gmane.org>
2013-11-20 8:48 ` Sebastien Vauban
[not found] ` <mailman.6575.1384901595.10748.bug-gnu-emacs@gnu.org>
[not found] ` <mailman.6575.1384901595.10748.bug-gnu-emacs-mXXj517/zsQ@public.gmane.org>
2013-11-20 22:32 ` Sebastien Vauban
2013-11-21 3:42 ` Eli Zaretskii
[not found] ` <mailman.6739.1385005456.10748.bug-gnu-emacs@gnu.org>
[not found] ` <mailman.6739.1385005456.10748.bug-gnu-emacs-mXXj517/zsQ@public.gmane.org>
2013-11-26 20:52 ` Sebastien Vauban
2013-11-26 21:04 ` Eli Zaretskii
[not found] ` <mailman.7212.1385499914.10748.bug-gnu-emacs@gnu.org>
[not found] ` <mailman.7212.1385499914.10748.bug-gnu-emacs-mXXj517/zsQ@public.gmane.org>
2013-11-29 21:01 ` Sebastien Vauban
2013-12-01 16:31 ` Eli Zaretskii
2013-12-02 10:45 ` Dmitry Antipov
2013-12-02 11:43 ` Dmitry Antipov
2013-12-02 18:00 ` Eli Zaretskii
2013-12-02 17:52 ` Eli Zaretskii
2013-12-03 9:57 ` Dmitry Antipov
2013-12-03 13:16 ` Eli Zaretskii
2013-12-03 15:09 ` Dmitry Antipov
2013-12-04 17:53 ` Eli Zaretskii
2013-12-05 6:29 ` Dmitry Antipov
2013-12-05 17:36 ` Eli Zaretskii
2013-12-11 6:52 ` Dmitry Antipov
2013-12-11 7:16 ` bug#15876: [SPAM] " Jarek Czekalski
2013-12-11 9:24 ` Dmitry Antipov
2013-12-11 16:28 ` Eli Zaretskii
2013-12-11 18:00 ` Dmitry Antipov
2013-12-11 18:12 ` Eli Zaretskii
2013-12-11 19:50 ` Jan Djärv
2013-12-13 15:22 ` Eli Zaretskii
2013-12-13 16:12 ` Dmitry Antipov
2013-12-13 16:45 ` Stefan Monnier
2013-12-13 18:53 ` Eli Zaretskii
2013-12-13 18:44 ` Eli Zaretskii
2013-12-16 8:05 ` Dmitry Antipov
2013-12-13 16:50 ` Stefan Monnier
2013-12-13 18:55 ` Eli Zaretskii [this message]
2013-12-14 2:13 ` Stefan Monnier
2013-12-14 8:47 ` Jan Djärv
[not found] ` <mailman.7746.1385915595.10748.bug-gnu-emacs@gnu.org>
[not found] ` <mailman.7746.1385915595.10748.bug-gnu-emacs-mXXj517/zsQ@public.gmane.org>
2013-12-01 20:20 ` Sebastien Vauban
2013-12-01 20:37 ` Eli Zaretskii
[not found] ` <mailman.7763.1385930292.10748.bug-gnu-emacs@gnu.org>
[not found] ` <mailman.7763.1385930292.10748.bug-gnu-emacs-mXXj517/zsQ@public.gmane.org>
2013-12-01 21:51 ` Sebastien Vauban
2013-12-02 3:45 ` Eli Zaretskii
[not found] ` <mailman.7786.1385955973.10748.bug-gnu-emacs@gnu.org>
[not found] ` <mailman.7786.1385955973.10748.bug-gnu-emacs-mXXj517/zsQ@public.gmane.org>
2013-12-02 9:29 ` Sebastien Vauban
2013-11-13 16:52 ` Stefan Monnier
2013-11-14 11:03 ` Jarek Czekalski
2013-11-14 16:35 ` Eli Zaretskii
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