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bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00e
From: |
Clément Pit--Claudel |
Subject: |
bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014). |
Date: |
Wed, 20 Jul 2016 17:26:02 -0400 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 |
On 2016-03-03 15:27, Eli Zaretskii wrote:
> The only way forward I see is to reproduce the problem described in
> http://debbugs.gnu.org/cgi/bugreport.cgi?bug=17125#26 and in
> http://debbugs.gnu.org/cgi/bugreport.cgi?bug=17125#29, in the "fast"
> case (i.e. without the changes that fixed that bug), and then look for
> a different solution for that problem. If you can reproduce that,
> please step through x_default_font_parameter and x_default_parameter,
> and tell how does the empty vector in the cache come into play. Then
> we can try some other solution for that.
Belated thanks. I will try to look into this.
I've made more progress towards making this reproducible, too. My current repro
requires XITS Math
(https://github.com/khaledhosny/xits-math/blob/master/xits-mathbold.otf), and
Segoe UI Emoji. Do you have a machine with that font? If so, could you try the
following?
emacs-24.5 -Q -mm -l 21028.el 21028 -f prettify-symbols-mode
I've attached 21028.el and 21028. When I run this command, each full redisplay
takes about 5 seconds; same for pointer motion.
Clément.
21028.el
Description: Text Data
21028
Description: Text document
signature.asc
Description: OpenPGP digital signature
- bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014).,
Clément Pit--Claudel <=