From: Eli Zaretskii <eliz@gnu.org>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: 43177@debbugs.gnu.org, rpluim@gmail.com, emacs@Alexander.Shukaev.name
Subject: bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1'
Date: Thu, 03 Sep 2020 21:24:24 +0300 [thread overview]
Message-ID: <83blimvhuv.fsf@gnu.org> (raw)
In-Reply-To: <87a6y6oiju.fsf@igel.home> (message from Andreas Schwab on Thu, 03 Sep 2020 19:51:17 +0200)
> From: Andreas Schwab <schwab@linux-m68k.org>
> Cc: Robert Pluim <rpluim@gmail.com>, 43177@debbugs.gnu.org,
> emacs@Alexander.Shukaev.name
> Date: Thu, 03 Sep 2020 19:51:17 +0200
>
> On Sep 03 2020, Eli Zaretskii wrote:
>
> > Do we understand why including the x backend produces such a huge
> > delay? Where is most of that time spent, and why?
>
> My guess would be that probing fonts via the x backend is expensive due
> to round trips to the X server (and the X server is quite busy during
> that time).
If that is the reason, I guess we should try to minimize the number of
fonts for which this is done. Like, for example, set up some data
structure to be consulted when a deciding whether a given font should
be used with the x backend. After all, the number of fonts for which
that backend is needed is quite small, basically bitmapped fonts.
next prev parent reply other threads:[~2020-09-03 18:24 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-03 7:18 bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1' Alexander Shukaev
2020-09-03 7:28 ` Robert Pluim
2020-09-03 7:42 ` Pip Cet
2020-09-03 8:50 ` Alexander Shukaev
2020-09-03 8:51 ` Alexander Shukaev
2020-09-03 9:02 ` Alexander Shukaev
2020-09-03 9:07 ` Robert Pluim
2020-09-03 9:40 ` Alexander Shukaev
2020-09-03 9:50 ` Alexander Shukaev
2020-09-03 9:53 ` Alexander Shukaev
2020-09-03 10:06 ` Robert Pluim
2020-09-03 10:24 ` Alexander Shukaev
2020-09-03 12:13 ` Robert Pluim
2020-09-03 12:28 ` Alexander Shukaev
2020-09-03 12:43 ` Robert Pluim
2020-09-03 12:52 ` Andreas Schwab
2020-09-03 13:19 ` Robert Pluim
2020-09-03 13:28 ` Andreas Schwab
2020-09-03 14:21 ` Robert Pluim
2020-09-03 14:48 ` Andreas Schwab
2020-09-03 15:10 ` Robert Pluim
2020-09-03 16:39 ` Alexander Shukaev
2020-09-03 19:47 ` Alexander Shukaev
2020-09-04 6:54 ` Eli Zaretskii
2020-09-03 17:37 ` Eli Zaretskii
2020-09-03 17:51 ` Andreas Schwab
2020-09-03 18:24 ` Eli Zaretskii [this message]
2020-09-04 7:45 ` Robert Pluim
2020-09-04 12:22 ` Eli Zaretskii
2020-09-04 13:05 ` Robert Pluim
2020-09-04 13:30 ` Eli Zaretskii
2020-09-04 14:04 ` Robert Pluim
2020-09-04 17:26 ` Eli Zaretskii
2020-09-07 14:18 ` Robert Pluim
2020-09-07 14:41 ` Pip Cet
2020-09-07 14:48 ` Robert Pluim
2020-09-07 14:49 ` Eli Zaretskii
2020-09-07 15:06 ` Robert Pluim
2020-09-15 15:40 ` Robert Pluim
2020-09-03 9:58 ` Robert Pluim
2020-09-03 13:19 ` Eli Zaretskii
2020-09-03 14:03 ` Robert Pluim
[not found] ` <handler.43177.B.159911754532334.ack@debbugs.gnu.org>
2020-09-03 7:30 ` bug#43177: Acknowledgement (Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1') Alexander Shukaev
2020-09-03 8:43 ` Alexander Shukaev
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