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bug#26402: 25.2; Font rendering extremely slow on any non-default font
From: |
Gennady Uraltsev |
Subject: |
bug#26402: 25.2; Font rendering extremely slow on any non-default font |
Date: |
Sun, 9 Apr 2017 13:07:03 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 |
Dear Eli,
1) I must admit that I am not very familiar with GDB. I have done some
programming so I am familiar with the basic concepts but not the tool.
If you give me an outline of what to do I can try to do it (I do not
mean step by step instructions, I guess I can figure something out and
if I really can't I could ask for clarifications).
2) Currently this is what I am doing. I have some virtual machines of
otherdistributions (vanilla installations) that I use to test for bugs
(cross-check).
I see that on kubuntu 16.10 with emacs 24.5.1 and with emacs25.1.2 the
problem does not appear: everything works smoothly.
3) Just a question: is there a way to ask emacs to dump the info about
the versions of all the libraries it uses?
Let me know what to do.
Thanks!
Gena
On 09/04/17 11:45, Eli Zaretskii wrote:
> > Date: Sun, 09 Apr 2017 08:44:55 +0300
> > From: Eli Zaretskii <eliz@gnu.org>
> > Cc: 26402@debbugs.gnu.org
> >
> >> The profiler profiles are attached.
> >
> > The profiles clearly tell the problem is related to font metrics, but
> > they don't tell what exactly causes the slow-down or why. Sorry.
>
> How proficient are you with using GDB? If I ask you to step through a
> certain Emacs function and tell which of its parts is the slow one,
> can you do that? I can give more detailed instructions if needed.
>
> TIA
>
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- bug#26402: 25.2; Font rendering extremely slow on any non-default font, Gennady Uraltsev, 2017/04/08
- bug#26402: 25.2; Font rendering extremely slow on any non-default font, Eli Zaretskii, 2017/04/08
- bug#26402: 25.2; Font rendering extremely slow on any non-default font, Gennady Uraltsev, 2017/04/08
- bug#26402: 25.2; Font rendering extremely slow on any non-default font, Eli Zaretskii, 2017/04/08
- Message not available
- bug#26402: 25.2; Font rendering extremely slow on any non-default font, Eli Zaretskii, 2017/04/08
- bug#26402: 25.2; Font rendering extremely slow on any non-default font, Gennady Uraltsev, 2017/04/08
- bug#26402: 25.2; Font rendering extremely slow on any non-default font, Eli Zaretskii, 2017/04/09
- bug#26402: 25.2; Font rendering extremely slow on any non-default font, Eli Zaretskii, 2017/04/09
- bug#26402: 25.2; Font rendering extremely slow on any non-default font,
Gennady Uraltsev <=
- bug#26402: 25.2; Font rendering extremely slow on any non-default font, Eli Zaretskii, 2017/04/09