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| From: | Simen Heggestøyl |
| Subject: | bug#51006: 28.0.60; Slowness while navigating in inferior-python-mode |
| Date: | Mon, 04 Oct 2021 21:21:56 +0200 |
| User-agent: | Gnus/5.13 (Gnus v5.13) Emacs/28.0.60 (gnu/linux) |
Eli Zaretskii <eliz@gnu.org> writes: > Please repeat the profiling experiment, but after loading python.el > (NOT python.elc). This should produce a more detailed profile that > would pinpoint the culprit more accurately. Based on skimming the > source code, my first suspect is syntax-ppss, but that could be a bad > guess. Hi Eli, thanks for the quick response. I repeated the experiment after deleting python.elc to avoid loading it on startup (maybe there's a simpler way of preventing that?). The new profiler report is attached. Another detail: This doesn't happen in the ordinary python-mode, only in inferior-python-mode.
47639 95% - python-shell-font-lock-post-command-hook
47639 95% - let
47639 95% - if
47639 95% - progn
47635 95% - let*
47627 95% - let
47623 95% - save-current-buffer
47623 95% - save-current-buffer
47615 95% - let
47611 95% - if
47611 95% - funcall
47611 95% - font-lock-ensure
47611 95% - #<compiled -0x15f49b30cf8ae947>
47611 95% - font-lock-fontify-region
47611 95% - font-lock-default-fontify-region
47400 94% - font-lock-fontify-syntactically-region
47400 94% - python-font-lock-syntactic-face-function
47400 94% - if
47400 94% - if
47399 94% - python-info-docstring-p
47387 94% - save-excursion
47096 94% - python-nav-beginning-of-statement
47072 94% - let*
44158 88% - cond
44151 88% - python-nav-beginning-of-statement
44127 88% - let*
41183 82% - cond
41175 82% - python-nav-beginning-of-statement
41133 82% - let*
38429 76% - cond
38421 76% -
python-nav-beginning-of-statement
38409 76% - let*
35842 71% - cond
35838 71% -
python-nav-beginning-of-statement
35806 71% - let*
33257 66% - cond
33177 66% -
python-nav-beginning-of-statement
32662 65% - let*
32414 64% syntax-ppss
124 0% cond
20 0% or
76 0% - save-excursion
68 0% -
python-info-line-ends-backslash-p
64 0% - save-excursion
56 0% - while
56 0% - and
56 0% - nth
56 0% - or
52 0% syntax-ppss
2525 5% - syntax-ppss
12 0% #<compiled
0xb89c315bc3a37ea>
20 0% - or
8 0% nth
8 0% - let
4 0% and
2551 5% syntax-ppss
4 0% - or
4 0% nth
2672 5% - syntax-ppss
4 0% #<compiled 0xb89c315bc3a37ea>
4 0% or
4 0% - save-excursion
4 0% -
python-info-line-ends-backslash-p
4 0% - save-excursion
4 0% - while
4 0% - and
4 0% - nth
4 0% - or
4 0% syntax-ppss
2916 5% - syntax-ppss
4 0% #<compiled 0xb89c315bc3a37ea>
8 0% - or
4 0% nth
2886 5% syntax-ppss
4 0% - or
4 0% nth
271 0% - let
217 0% - if
213 0% - and
173 0% - not
169 0% - python-info-assignment-statement-p
165 0% - save-excursion
165 0% - let
137 0% - if
133 0% -
python-nav-beginning-of-statement
113 0% - let*
77 0% - cond
65 0% - save-excursion
61 0% -
python-info-line-ends-backslash-p
48 0% - save-excursion
36 0% - while
32 0% - and
28 0% - nth
28 0% - or
28 0% syntax-ppss
8 0% - if
4 0% equal
24 0% syntax-ppss
8 0% or
20 0% - while
20 0% - and
8 0% re-search-forward
24 0% looking-at-p
4 0% concat
8 0% if
84 0% - font-lock-fontify-keywords-region
84 0% - #<lambda -0xaef49294dba7a2c>
84 0% - let
4 0% - if
4 0% - or
4 0% - nth
4 0% - or
4 0% syntax-ppss
8 0% - if
8 0% - progn
8 0% - font-lock-mode
8 0% - font-lock-default-function
8 0% - font-lock-mode-internal
8 0% - font-lock-unfontify-buffer
8 0% - font-lock-default-unfontify-buffer
8 0% font-lock-unfontify-region
4 0% python-shell-get-process-or-error
8 0% - while
8 0% - let*
4 0% or
4 0% set-text-properties
2364 4% + ...
47 0% + command-execute
3 0% + redisplay_internal (C function)
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