[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#19266: 24.4; Font-related window redrawing delays on OS X
From: |
Eli Zaretskii |
Subject: |
bug#19266: 24.4; Font-related window redrawing delays on OS X |
Date: |
Thu, 04 Dec 2014 10:03:20 +0200 |
> Date: Thu, 4 Dec 2014 02:41:34 -0500
> From: Kirill Ignatiev <kirill.ignatiev@gmail.com>
> Cc: 19266@debbugs.gnu.org
>
> > AFAICT, these delays are due to Emacs searching the system for
> > appropriate fonts needed to display those unusual symbols.
>
> I understand that this needs to happen once.
It can happen once for each portion of a buffer that was not yet
displayed.
> The description of what triggers the delays is unclear because for me
> it's only reproducible incidentally, during normal work. I have
> fold-mode that hides large portions of text, and a number of frames.
> If I hide some previously-displayed text, go work in another frame,
> then come back and unhide the text, then there is the font-searching
> delay. Something similar happens if I switch to a different buffer,
> then some time later switch back.
Emacs releases unused font slots from time to time, which might be the
reason here.
But this is speculation; a reproducible recipe is required to
investigate and come up with specifics. And yes, it could be a bug.
> Is it reasonable to expect to keep all recently used fonts in memory
> and not search for them again?
For some value of "recently", yes. Again, more data is needed to
determine whether this is an Emacs bug or a system configuration
issue.
- bug#19266: 24.4; Font-related window redrawing delays on OS X, Kirill Ignatiev, 2014/12/04
- bug#19266: 24.4; Font-related window redrawing delays on OS X, Eli Zaretskii, 2014/12/04
- bug#19266: 24.4; Font-related window redrawing delays on OS X, Sebastian Wiesner, 2014/12/04
- bug#19266: 24.4; Font-related window redrawing delays on OS X, Eli Zaretskii, 2014/12/04
- bug#19266: 24.4; Font-related window redrawing delays on OS X, Sebastian Wiesner, 2014/12/04
- bug#19266: 24.4; Font-related window redrawing delays on OS X, Kirill Ignatiev, 2014/12/07
- bug#19266: 24.4; Font-related window redrawing delays on OS X, Eli Zaretskii, 2014/12/07
- bug#19266: 24.4; Font-related window redrawing delays on OS X, Kirill Ignatiev, 2014/12/10
- bug#19266: 24.4; Font-related window redrawing delays on OS X, Eli Zaretskii, 2014/12/11
- bug#19266: 24.4; Font-related window redrawing delays on OS X, Kirill Ignatiev, 2014/12/11
- bug#19266: 24.4; Font-related window redrawing delays on OS X, Eli Zaretskii, 2014/12/12