|
| From: | Eli Zaretskii |
| Subject: | bug#33887: 26.1; Emacs hangs for several seconds when going to the end of an XML file in nXML mode |
| Date: | Thu, 27 Dec 2018 18:02:07 +0200 |
> From: Vincent Lefevre <vincent@vinc17.net>
> Date: Thu, 27 Dec 2018 11:13:06 +0100
>
> When I open a large XML file and immediately go to the end of the
> file with '<ESC> >', Emacs hangs for several seconds. For instance,
> on /usr/share/xml/iso-codes/iso_639-3.xml from iso-codes in Debian
> (a 1-MB file), it takes 5 seconds. On a 4-MB personal XML file, it
> takes 15 seconds.
>
> This is a regression: Emacs 25 did not hang at all.
Confirmed, thanks.
The profile (see below) blames syntax-ppss called by
sgml-syntax-propertize, so I suspect commit 0055190, which added
sgml-syntax-propertize-inside to sgml-syntax-propertize.
CC'ing Stefan who made those changes.
Here's the profile:
- command-execute 532 77%
- call-interactively 532 77%
- funcall-interactively 522 75%
- end-of-buffer 500 72%
- recenter 496 71%
- jit-lock-function 496 71%
- jit-lock-fontify-now 496 71%
- jit-lock--run-functions 496 71%
- run-hook-wrapped 496 71%
- #<compiled 0x200000000b3a7fd0> 496 71%
- font-lock-fontify-region 496 71%
- font-lock-default-fontify-region 496 71%
- nxml-extend-region 496 71%
- skip-syntax-forward 496 71%
- internal--syntax-propertize 496 71%
- syntax-propertize 496 71%
- sgml-syntax-propertize 490 71%
syntax-ppss 445 64%
push-mark 1 0%
- find-file 20 2%
- find-file-noselect 20 2%
- find-file-noselect-1 19 2%
- after-find-file 17 2%
- normal-mode 17 2%
- set-auto-mode 17 2%
- set-auto-mode-0 17 2%
- xml-mode 17 2%
- byte-code 14 2%
- require 12 1%
- byte-code 11 1%
- require 10 1%
- byte-code 9 1%
- require 6 0%
- byte-code 6 0%
- cl-generic-define-method 4 0%
- cl--generic-make-function 4 0%
- cl--generic-make-next-function 4 0%
- cl--generic-get-dispatcher 4 0%
- byte-compile 3 0%
byte-code 1 0%
- #<compiled 0x200000000b325048> 1
0%
byte-compile-top-level 1 0%
- custom-declare-variable 1 0%
- custom-initialize-reset 1 0%
- eval 1 0%
- funcall 1 0%
- #<compiled 0x200000000b3c88b8> 1 0%
- executable-find 1 0%
locate-file 1 0%
file-truename 1 0%
- rng-nxml-mode-init 2 0%
- rng-validate-mode 2 0%
- rng-auto-set-schema 2 0%
- rng-locate-schema-file 2 0%
- rng-locate-schema-file-using 2 0%
- rng-get-parsed-schema-locating-file 2 0%
- rng-parse-schema-locating-file 1 0%
- rng-parse-validate-file 1 0%
- nxml-parse-instance 1 0%
nxml-parse-instance-1 1 0%
- file-truename 1 0%
- file-truename 1 0%
- file-truename 1 0%
file-truename 1 0%
- insert-file-contents 1 0%
xml-find-file-coding-system 1 0%
- execute-extended-command 1 0%
- sit-for 1 0%
redisplay 1 0%
- minibuffer-complete 1 0%
- completion-in-region 1 0%
- completion--in-region 1 0%
- #<compiled 0x2000000001b04c20> 1 0%
- apply 1 0%
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- completion--in-region-1 1 0%
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- completion-try-completion 1 0%
- completion--nth-completion 1 0%
- completion--some 1 0%
- #<compiled 0x2000000001b0bd20> 1 0%
- completion-basic-try-completion 1 0%
- try-completion 1 0%
completion-file-name-table 1 0%
- byte-code 10 1%
- read-extended-command 9 1%
- completing-read 9 1%
- completing-read-default 9 1%
read-from-minibuffer 9 1%
- find-file-read-args 1 0%
- read-file-name 1 0%
- read-file-name-default 1 0%
- completing-read 1 0%
- completing-read-default 1 0%
- read-from-minibuffer 1 0%
- redisplay_internal (C function) 1 0%
find-image 1 0%
- ... 158 22%
Automatic GC 156 22%
- macroexp--all-forms 1 0%
- macroexp--expand-all 1 0%
- #<compiled 0x2000000001375130> 1 0%
- macroexp--all-forms 1 0%
- macroexp--expand-all 1 0%
- macroexp--all-forms 1 0%
- macroexp--expand-all 1 0%
- #<compiled 0x2000000001375130> 1 0%
- macroexp--all-forms 1 0%
- macroexp--expand-all 1 0%
- #<compiled 0x2000000001375068> 1 0%
- macroexp--all-forms 1 0%
- macroexp--expand-all 1 0%
- macroexp-macroexpand 1 0%
- macroexpand 1 0%
#<compiled 0x20000000013f0600> 1 0%
- rng-compute-start-tag-open-deriv 1 0%
- rng-element-get-child 1 0%
- rng-compile 1 0%
- apply 1 0%
- rng-compile-group 1 0%
- mapcar 1 0%
- rng-compile 1 0%
- apply 1 0%
- rng-compile-attribute 1 0%
- rng-compile 1 0%
- apply 1 0%
- rng-compile-ref 1 0%
- rng-compile 1 0%
- apply 1 0%
- rng-compile-data 1 0%
rng-compile-dt 1 0%
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