GNU bug report logs - #43177
Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1'

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Package: emacs;

Reported by: Alexander Shukaev <emacs <at> Alexander.Shukaev.name>

Date: Thu, 3 Sep 2020 07:20:02 UTC

Severity: normal

Fixed in version 28.1

Done: Robert Pluim <rpluim <at> gmail.com>

Bug is archived. No further changes may be made.

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Message #89 received at 43177 <at> debbugs.gnu.org (full text, mbox):

From: Andreas Schwab <schwab <at> linux-m68k.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 43177 <at> debbugs.gnu.org, Robert Pluim <rpluim <at> gmail.com>,
 emacs <at> Alexander.Shukaev.name
Subject: Re: bug#43177: Bug: Emacs 27.1 hangs forever in
 `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1'
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).
 
Andreas.

-- 
Andreas Schwab, schwab <at> linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510  2552 DF73 E780 A9DA AEC1
"And now for something completely different."
This bug report was last modified 4 years and 249 days ago.

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