Package: emacs;
Reported by: Visuwesh <visuweshm <at> gmail.com>
Date: Fri, 13 Oct 2023 05:55:01 UTC
Severity: normal
Found in version 30.0.50
To reply to this bug, email your comments to 66512 AT debbugs.gnu.org.
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bug-gnu-emacs <at> gnu.org:bug#66512; Package emacs.
(Fri, 13 Oct 2023 05:55:02 GMT) Full text and rfc822 format available.Visuwesh <visuweshm <at> gmail.com>:bug-gnu-emacs <at> gnu.org.
(Fri, 13 Oct 2023 05:55:02 GMT) Full text and rfc822 format available.Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
From: Visuwesh <visuweshm <at> gmail.com> To: bug-gnu-emacs <at> gnu.org Subject: 30.0.50; flymake with checkdoc slows down typing in large Elisp buffers Date: Fri, 13 Oct 2023 11:23:31 +0530
[Message part 1 (text/plain, inline)]
flymake-mode is largely unusable in large Elisp buffers with checkdoc
enabled as it sometimes takes a second for the typed words to be
displayed, and there are too many micro freezes. I have attached two
profiles one from emacs -Q, and one from my personal configuration saved
using the command profiler-report-write-profile. Both point to
checkdoc-this-string-valid being the time consuming function.
To reproduce,
1. src/emacs -Q
2. C-x C-f lisp/org/org.el RET
3. M-x flymake-mode RET
4. M-g i org-drag-line-forward RET
5. Move the point to be inside the docstring, and start typing away.
You should notice the latency sooner or later.
I can reproduce this in my fairly long init.el file too (~10k lines) and
I was forced to turn off checkdoc for the typing to be bearable in my
init.el file.
[emacs-personal-config-checkdoc-slow.eld (application/octet-stream, attachment)]
[emacs-Q-checkdoc-slow.eld (application/octet-stream, attachment)]
[Message part 4 (text/plain, inline)]
This expansion is from my personal configuration:
10564 91% - timer-event-handler
10564 91% - apply
10452 90% - #<compiled -0x15d5576a503803dd>
10452 90% - flymake-start
10452 90% - run-hook-wrapped
10452 90% - #<compiled -0xa066ffdeba1d889>
10452 90% - flymake--run-backend
10452 90% - apply
10313 88% - elisp-flymake-checkdoc
10277 88% - checkdoc-current-buffer
8560 73% - checkdoc-start
8560 73% - checkdoc-continue
6288 54% - checkdoc-this-string-valid
3342 28% - checkdoc-defun-info
1759 15% - end-of-defun
922 7% - #<compiled 0xb4b7b2e75ab36>
922 7% - forward-sexp
910 7% scan-sexps
757 6% - beginning-of-defun-raw
717 6% - syntax-ppss
689 5% parse-partial-sexp
8 0% syntax-propertize
4 0% #<compiled -0x42d4fdd508f1a2e>
4 0% make-closure
28 0% re-search-backward
48 0% + #<compiled -0x12ecd99cbfd8c270>
596 5% + syntax-ppss
567 4% + beginning-of-defun
240 2% re-search-forward
52 0% + forward-sexp
44 0% looking-at
12 0% read
8 0% make-vector
4 0% flatten-tree
2902 25% + checkdoc-this-string-valid-engine
28 0% looking-at
8 0% make-closure
4 0% + forward-sexp
2268 19% + checkdoc-next-docstring
996 8% + checkdoc-rogue-spaces
712 6% + checkdoc-message-text
6 0% + checkdoc-start-section
3 0% + checkdoc-comments
32 0% + #<compiled -0xf759b3bc90215af>
4 0% + #<compiled 0xb86a3dc64a1e2>
139 1% + elisp-flymake-byte-compile
52 0% + #<compiled 0x1a58a16b3cf8cf00>
40 0% + show-paren-function
12 0% + jit-lock-stealth-fontify
8 0% + #<compiled 0x12c5f6ab3ecc1b96>
542 4% + redisplay_internal (C function)
369 3% + command-execute
76 0% + eldoc-pre-command-refresh-echo-area
24 0% + #<compiled -0xf6b215b945ed59>
7 0% + jit-lock--antiblink-post-command
5 0% internal-timer-start-idle
4 0% + tab-bar--history-pre-change
0 0% ...
In GNU Emacs 30.0.50 (build 13, x86_64-pc-linux-gnu, X toolkit, cairo
version 1.16.0, Xaw scroll bars) of 2023-10-08 built on astatine
Repository revision: 940df63d2daf50b899a66cd1542bec0c0f3eaebf
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101008
System Description: Debian GNU/Linux trixie/sid
Configured using:
'configure --with-sound=alsa --with-x-toolkit=lucid --with-json
--without-xaw3d --without-gconf --without-libsystemd --with-cairo
--with-xft'
Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
JSON LIBOTF LIBSELINUX LIBXML2 MODULES NOTIFY INOTIFY PDUMPER PNG RSVG
SECCOMP SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS WEBP X11 XDBE XIM
XINPUT2 XPM LUCID ZLIB
Important settings:
value of $LC_MONETARY: ta_IN.UTF-8
value of $LC_NUMERIC: ta_IN.UTF-8
value of $LANG: en_GB.UTF-8
locale-coding-system: utf-8-unix
Major mode: Profiler-Report
Minor modes in effect:
recentf-mode: t
server-mode: t
eros-mode: t
pdf-occur-global-minor-mode: t
minibuffer-depth-indicate-mode: t
repeat-mode: t
display-time-mode: t
display-battery-mode: t
delete-selection-mode: t
xterm-mouse-mode: t
straight-use-package-mode: t
straight-package-neutering-mode: t
tooltip-mode: t
global-eldoc-mode: t
show-paren-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
use-hard-newlines: t
tab-bar-history-mode: t
tab-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
undelete-frame-mode: t
minibuffer-regexp-mode: t
buffer-read-only: t
indent-tabs-mode: t
transient-mark-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
Load-path shadows:
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hashtable-print-readable backquote threads dbusbind inotify
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Memory information:
((conses 16 1687687 8363735) (symbols 48 73938 4205)
(strings 32 384920 270420) (string-bytes 1 16256758)
(vectors 16 168975) (vector-slots 8 3621518 2304377)
(floats 8 6119 25915) (intervals 56 88125 34648) (buffers 984 75))
bug-gnu-emacs <at> gnu.org:bug#66512; Package emacs.
(Fri, 13 Oct 2023 06:39:01 GMT) Full text and rfc822 format available.Message #8 received at 66512 <at> debbugs.gnu.org (full text, mbox):
From: Eli Zaretskii <eliz <at> gnu.org> To: Visuwesh <visuweshm <at> gmail.com> Cc: 66512 <at> debbugs.gnu.org Subject: Re: bug#66512: 30.0.50; flymake with checkdoc slows down typing in large Elisp buffers Date: Fri, 13 Oct 2023 09:37:35 +0300
> From: Visuwesh <visuweshm <at> gmail.com>
> Date: Fri, 13 Oct 2023 11:23:31 +0530
>
> flymake-mode is largely unusable in large Elisp buffers with checkdoc
> enabled as it sometimes takes a second for the typed words to be
> displayed, and there are too many micro freezes. I have attached two
> profiles one from emacs -Q, and one from my personal configuration saved
> using the command profiler-report-write-profile. Both point to
> checkdoc-this-string-valid being the time consuming function.
>
> To reproduce,
>
> 1. src/emacs -Q
> 2. C-x C-f lisp/org/org.el RET
> 3. M-x flymake-mode RET
> 4. M-g i org-drag-line-forward RET
> 5. Move the point to be inside the docstring, and start typing away.
> You should notice the latency sooner or later.
>
> I can reproduce this in my fairly long init.el file too (~10k lines) and
> I was forced to turn off checkdoc for the typing to be bearable in my
> init.el file.
Thanks.
This report needs more info:
. the file you used which produces this slowdown
. the profile is not fully expanded (some functions have "+")
. for more detailed profile, please load the relevant Lisp files as
*.el (not *.elc), and repeat the profiling
. if the slowdown is visible in "emacs -Q", the profile from that is
more important than the one from your customized Emacs
bug-gnu-emacs <at> gnu.org:bug#66512; Package emacs.
(Sat, 14 Oct 2023 09:31:02 GMT) Full text and rfc822 format available.Message #11 received at 66512 <at> debbugs.gnu.org (full text, mbox):
From: Visuwesh <visuweshm <at> gmail.com> To: Eli Zaretskii <eliz <at> gnu.org> Cc: 66512 <at> debbugs.gnu.org Subject: Re: bug#66512: 30.0.50; flymake with checkdoc slows down typing in large Elisp buffers Date: Sat, 14 Oct 2023 14:59:29 +0530
[Message part 1 (text/plain, inline)]
[வெள்ளி அக்டோபர் 13, 2023] Eli Zaretskii wrote:
>> From: Visuwesh <visuweshm <at> gmail.com>
>> Date: Fri, 13 Oct 2023 11:23:31 +0530
>>
>> flymake-mode is largely unusable in large Elisp buffers with checkdoc
>> enabled as it sometimes takes a second for the typed words to be
>> displayed, and there are too many micro freezes. I have attached two
>> profiles one from emacs -Q, and one from my personal configuration saved
>> using the command profiler-report-write-profile. Both point to
>> checkdoc-this-string-valid being the time consuming function.
>>
>> To reproduce,
>>
>> 1. src/emacs -Q
>> 2. C-x C-f lisp/org/org.el RET
>> 3. M-x flymake-mode RET
>> 4. M-g i org-drag-line-forward RET
>> 5. Move the point to be inside the docstring, and start typing away.
>> You should notice the latency sooner or later.
>>
>> I can reproduce this in my fairly long init.el file too (~10k lines) and
>> I was forced to turn off checkdoc for the typing to be bearable in my
>> init.el file.
>
> Thanks.
>
> This report needs more info:
>
> . the file you used which produces this slowdown
I used org.el in the example.
> . the profile is not fully expanded (some functions have "+")
> . for more detailed profile, please load the relevant Lisp files as
> *.el (not *.elc), and repeat the profiling
> . if the slowdown is visible in "emacs -Q", the profile from that is
> more important than the one from your customized Emacs
Here's the fully expanded profile after evaluating the checkdoc.el
library in emacs -Q. I also attached the file written by
profiler-report-write-profile too.
There are still a couple compiled functions but I think they are safe to
ignore for now.
3260 67% - timer-event-handler
3260 67% - apply
3260 67% - #<compiled 0x1f6faae8cb95a424>
3260 67% - flymake-start
3260 67% - run-hook-wrapped
3260 67% - #<compiled -0x280737ed0d75cb0>
3260 67% - flymake--run-backend
3260 67% - apply
3239 67% - elisp-flymake-checkdoc
3231 67% - checkdoc-current-buffer
3231 67% - let
3231 67% - or
2655 55% - checkdoc-start
2655 55% - let
2655 55% - checkdoc-continue
2655 55% - let
2655 55% - save-excursion
2655 55% - while
2037 42% - setq
2037 42% - checkdoc-this-string-valid
2033 42% - let
1123 23% - if
1123 23% - let
1115 23% - unwind-protect
1115 23% - progn
1115 23% - checkdoc-this-string-valid-engine
1115 23% - let
1103 22% - or
699 14% - save-excursion
348 7% - let*
252 5% - while
248 5% - and
244 5% - or
244 5% - progn
224 4% - <
220 4% current-column
4 0% funcall
20 0% end-of-line
4 0% - <
4 0% point
4 0% forward-line
84 1% - function
84 1% - cconv-make-interpreted-closure
44 0% - cconv-fv
36 0% - cconv-analyze-form
28 0% - cconv--analyze-function
8 0% - cconv-analyze-form
4 0% - #<compiled 0x1e3233529d73ee4f>
4 0% cconv-analyze-form
4 0% - mapcar
4 0% #<compiled -0x1ee9fee790b185f2>
4 0% make-closure
32 0% - macroexpand-all
28 0% - macroexp--expand-all
24 0% - macroexp--all-forms
20 0% - macroexp--expand-all
20 0% - #<compiled 0x19f73f8625989308>
8 0% - macroexp--all-forms
4 0% macroexp--expand-all
8 0% - function-get
4 0% fboundp
4 0% end-of-line
307 6% - let
307 6% - while
179 3% - and
135 2% re-search-forward
44 0% + setq
108 2% + if
12 0% + let*
8 0% + setq
20 0% + if
8 0% + cond
4 0% skip-chars-backward
4 0% beginning-of-line
4 0% forward-line
172 3% + cond
104 2% + checkdoc-sentencespace-region-engine
76 1% + checkdoc-proper-noun-region-engine
36 0% + let
8 0% checkdoc-ispell-docstring-engine
8 0% + if
12 0% + if
4 0% syntax-table
910 18% + checkdoc-defun-info
4 0% + while
618 12% + and
304 6% + checkdoc-rogue-spaces
272 5% + checkdoc-message-text
8 0% - #<compiled 0x1f518ae41b6bfdca>
8 0% - apply
8 0% - flymake--handle-report
8 0% - flymake--publish-diagnostics
4 0% - flymake--highlight-line
4 0% #<compiled 0x45577ddd5ec64ee>
4 0% - flymake--delete-overlay
4 0% delete-overlay
21 0% - elisp-flymake-byte-compile
21 0% write-region
1324 27% Automatic GC
146 3% - redisplay_internal (C function)
17 0% - jit-lock-function
17 0% - jit-lock-fontify-now
17 0% - jit-lock--run-functions
17 0% - run-hook-wrapped
17 0% - #<compiled -0x72b32c146f17ee7>
17 0% + font-lock-fontify-region
8 0% - eval
4 0% - flymake--mode-line-counter
4 0% - flymake--mode-line-counter-1
4 0% - flymake--severity
4 0% - flymake--lookup-type-property
4 0% plist-member
4 0% - flymake--mode-line-title
4 0% make-sparse-keymap
1 0% - redisplay--pre-redisplay-functions
1 0% run-hook-with-args
1 0% - file-remote-p
1 0% find-file-name-handler
72 1% - command-execute
72 1% - call-interactively
65 1% - byte-code
65 1% - read-extended-command
65 1% - read-extended-command-1
65 1% - completing-read
65 1% - completing-read-default
65 1% - read-from-minibuffer
25 0% redisplay_internal (C function)
10 0% - timer-event-handler
10 0% - apply
10 0% - #<compiled 0x1f6faae8cb95a424>
10 0% - flymake-start
10 0% - run-hook-wrapped
10 0% - #<compiled -0x286221700d75cb0>
10 0% - flymake--run-backend
10 0% - apply
10 0% - elisp-flymake-byte-compile
10 0% - write-region
4 0% - make-lock-file-name
4 0% find-file-name-handler
7 0% + funcall-interactively
9 0% - #<compiled 0x9076c9ab87f5262>
9 0% - flymake--log-1
9 0% - display-warning
9 0% - icon-string
9 0% - icons--create
9 0% - apply
9 0% - #<compiled 0x1960f398ac366a51>
9 0% internal-char-font
7 0% - clear-minibuffer-message
7 0% timerp
2 0% - jit-lock--antiblink-post-command
2 0% - syntax-ppss
2 0% - syntax-propertize
2 0% make-local-variable
0 0% ...
[emacs-Q-checkdoc-evald.eld (application/octet-stream, attachment)]
bug-gnu-emacs <at> gnu.org:bug#66512; Package emacs.
(Sat, 14 Oct 2023 10:22:01 GMT) Full text and rfc822 format available.Message #14 received at 66512 <at> debbugs.gnu.org (full text, mbox):
From: Eli Zaretskii <eliz <at> gnu.org> To: Visuwesh <visuweshm <at> gmail.com> Cc: 66512 <at> debbugs.gnu.org Subject: Re: bug#66512: 30.0.50; flymake with checkdoc slows down typing in large Elisp buffers Date: Sat, 14 Oct 2023 13:20:48 +0300
> From: Visuwesh <visuweshm <at> gmail.com>
> Cc: 66512 <at> debbugs.gnu.org
> Date: Sat, 14 Oct 2023 14:59:29 +0530
>
> [வெள்ளி அக்டோபர் 13, 2023] Eli Zaretskii wrote:
>
> >> 1. src/emacs -Q
> >> 2. C-x C-f lisp/org/org.el RET
> >> 3. M-x flymake-mode RET
> >> 4. M-g i org-drag-line-forward RET
> >> 5. Move the point to be inside the docstring, and start typing away.
> >> You should notice the latency sooner or later.
> >>
> >> I can reproduce this in my fairly long init.el file too (~10k lines) and
> >> I was forced to turn off checkdoc for the typing to be bearable in my
> >> init.el file.
> >
> > Thanks.
> >
> > This report needs more info:
> >
> > . the file you used which produces this slowdown
>
> I used org.el in the example.
>
> > . the profile is not fully expanded (some functions have "+")
> > . for more detailed profile, please load the relevant Lisp files as
> > *.el (not *.elc), and repeat the profiling
> > . if the slowdown is visible in "emacs -Q", the profile from that is
> > more important than the one from your customized Emacs
>
> Here's the fully expanded profile after evaluating the checkdoc.el
> library in emacs -Q. I also attached the file written by
> profiler-report-write-profile too.
Thanks. It looks like the hot spots are:
. the call to checkdoc-defun-info
. this snippet from checkdoc-this-string-valid-engine:
(save-excursion
(forward-line 1)
(beginning-of-line)
(if (and (< (point) e)
(looking-at "\\([ \t]+\\)[^ \t\n]"))
(if (checkdoc-autofix-ask-replace (match-beginning 1)
(match-end 1)
"Remove this whitespace?"
"")
nil
(checkdoc-create-error
"Second line should not have indentation"
(match-beginning 1)
(match-end 1)))))
The rest is taken by GC, AFAICT.
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997,2003 nCipher Corporation Ltd,
1994-97 Ian Jackson.