From: Lordnik_PC@LORDNIKPC.i-did-not-set--mail-host-address--so-tickle-me

To: bug-gnu-emacs@gnu.org

Subject: 26.1; Emacs performance strike when using source-code-pro and unicodes together

--text follows this line--

Hello,

Explanation:

emacs is extremly slow on my windows 10 when using the Source-Code-Pro-Font

(https://github.com/adobe-fonts/source-code-pro) toeghter with any

unicode-characters (tested with two examples θ and μ).

I set the font by following lisp code in my init.el file:

"(set-frame-font "-outline-Source Code Pro-normal-normal-normal-mono-*-*-*-*-c-*-windows-1258")"

Question:

On which side lies the error? On Emacs, on the Font, on Windows (as usual), or something between my chair and my keyboard(also, as usual)?

Reproduction:

- Install source-code-pro on your windows 10

- Open Emacs

- Switch buffer to: *scratch*

- ;;After setting the font. Copy&paste&execute the cmds step by step. As soon as the unicode (θ) is displayed in emacs, emacs will begin to proceed slowly after the font is set.

- (set-frame-font "-outline-Source Code Pro-normal-normal-normal-mono-*-*-*-*-c-*-windows-1258")

- (insert "a") ;; inserts fast

- (insert "θ") ;; inserts slow, why?

Profiler-Report:

I created two reports with the profiler. One with the font "Alef" (just

a random font where the problem don't occur.)

And one with the Source-Code-Pro-Font. I just saw that with source code pro there are more bytes needed. Can you tell me more?

Alef Font Report:

- command-execute 11,083,771 98%

- call-interactively 11,083,771 98%

- funcall-interactively 11,048,283 98%

- execute-extended-command 7,519,434 66%

- command-execute 7,342,752 65%

- call-interactively 7,342,752 65%

- funcall-interactively 7,342,720 65%

- profiler-report 7,342,720 65%

- profiler-report-memory 5,432,405 48%

- profiler-report-profile-other-window 3,570,197 31%

- switch-to-buffer-other-window 3,527,209 31%

- pop-to-buffer 3,527,209 31%

- display-buffer 3,527,209 31%

- display-buffer-use-some-window 3,527,209 31%

window--display-buffer 3,526,209 31%

- window-resize 1,000 0%

- error 1,000 0%

apply 1,000 0%

- profiler-report-setup-buffer 42,988 0%

- profiler-report-render-calltree 41,916 0%

- profiler-report-rerender-calltree 41,916 0%

- profiler-report-render-calltree-1 41,916 0%

- profiler-calltree-build 33,024 0%

- profiler-calltree-build-unified 33,024 0%

- maphash 28,888 0%

#<compiled 0x142a871> 24,752 0%

#<compiled 0x1429c65> 4,136 0%

- profiler-report-insert-calltree-children 8,188 0%

- mapc 8,188 0%

- profiler-report-insert-calltree 8,188 0%

profiler-report-line-format 8,188 0%

profiler-report-move-to-entry 704 0%

- profiler-report-setup-buffer-1 1,072 0%

profiler-report-make-buffer-name 32 0%

profiler-memory-profile 1,862,208 16%

- profiler-report-cpu 1,910,315 16%

- profiler-cpu-profile 1,897,750 16%

profiler-make-profile 2,454 0%

- profiler-report-profile-other-window 12,565 0%

- profiler-report-setup-buffer 10,476 0%

- profiler-report-render-calltree 9,404 0%

- profiler-report-rerender-calltree 9,404 0%

- profiler-report-render-calltree-1 9,404 0%

- profiler-calltree-build 8,188 0%

- profiler-calltree-compute-percentages 8,188 0%

- profiler-calltree-walk 8,188 0%

- #<compiled 0x21fa8c1> 8,188 0%

profiler-format-percent 8,188 0%

profiler-report-move-to-entry 704 0%

- profiler-report-header-line-format 512 0%

replace-regexp-in-string 512 0%

- profiler-report-setup-buffer-1 1,072 0%

profiler-report-make-buffer-name 32 0%

- switch-to-buffer-other-window 2,089 0%

- pop-to-buffer 2,089 0%

- display-buffer 2,089 0%

- display-buffer-use-some-window 2,089 0%

window--display-buffer 1,089 0%

- window-resize 1,000 0%

- error 1,000 0%

apply 1,000 0%

- execute-extended-command--shorter 172,122 1%

- completion-try-completion 172,122 1%

- completion--nth-completion 172,122 1%

- completion--some 172,122 1%

- #<compiled 0x1424c15> 172,122 1%

- completion-pcm-try-completion 172,122 1%

- completion-pcm--merge-try 159,864 1%

completion-pcm--merge-completions 12,480 0%

- completion-pcm--find-all-completions 12,258 0%

completion-pcm--all-completions 12,258 0%

- sit-for 4,560 0%

redisplay 4,560 0%

- kill-buffer 3,526,209 31%

- replace-buffer-in-windows 3,526,209 31%

- switch-to-prev-buffer 3,526,209 31%

set-window-buffer-start-and-point 3,526,209 31%

- self-insert-command 1,536 0%

flycheck-handle-change 1,536 0%

- yank 1,024 0%

- current-kill 512 0%

- kill-new 512 0%

menu-bar-update-yank-menu 512 0%

- insert-for-yank 512 0%

- insert-for-yank-1 512 0%

flycheck-handle-change 512 0%

- handle-focus-in 80 0%

- run-hooks 80 0%

- flycheck-display-error-at-point-soon 80 0%

flycheck-overlays-at 80 0%

- byte-code 23,852 0%

- read-extended-command 23,852 0%

- completing-read 23,852 0%

- completing-read-default 23,852 0%

- read-from-minibuffer 15,360 0%

- command-execute 512 0%

call-interactively 512 0%

- completing-read-default 11,636 0%

- read-from-minibuffer 5,322 0%

- redisplay_internal (C function) 4,218 0%

file-remote-p 4,218 0%

- command-execute 16 0%

call-interactively 16 0%

- redisplay_internal (C function) 114,598 1%

- jit-lock-function 84,730 0%

- jit-lock-fontify-now 84,730 0%

- jit-lock--run-functions 84,730 0%

- run-hook-wrapped 84,730 0%

- #<compiled 0x143a461> 84,730 0%

- font-lock-fontify-region 84,730 0%

- font-lock-default-fontify-region 84,730 0%

- font-lock-fontify-keywords-region 84,730 0%

lisp--el-match-keyword 4,096 0%

#<compiled 0x1000d15c3> 4,096 0%

file-remote-p 29,868 0%

- timer-event-handler 31,388 0%

- apply 31,388 0%

- flycheck-handle-idle-change 25,204 0%

- flycheck-buffer-automatically 25,204 0%

- flycheck-buffer 25,204 0%

- flycheck-get-checker-for-buffer 24,564 0%

- seq-find 24,564 0%

- seq-do 24,564 0%

- mapc 24,564 0%

- #<compiled 0x13f04ed> 24,564 0%

- flycheck-may-use-checker 24,564 0%

flycheck-checker-supports-major-mode-p 8,188 0%

- flycheck-mark-all-overlays-for-deletion 320 0%

flycheck-overlays-in 320 0%

- flycheck-clear 320 0%

- flycheck-delete-all-overlays 320 0%

flycheck-overlays-in 320 0%

- company-idle-begin 6,184 0%

- company-auto-begin 6,184 0%

- company--perform 6,184 0%

- company--begin-new 6,184 0%

- company-capf 4,136 0%

- company--capf-data 4,136 0%

- company--capf-data-real 4,136 0%

- run-hook-wrapped 4,136 0%

- completion--capf-wrapper 4,136 0%

- elisp-completion-at-point 4,136 0%

completion-table-merge 4,136 0%

- company-files 1,536 0%

- company-files--grab-existing-name 1,536 0%

- company-grab-line 1,536 0%

- company-grab 1,536 0%

looking-back 1,536 0%

- company--multi-backend-adapter 512 0%

- company--force-sync 512 0%

- apply 512 0%

- company-dabbrev-code 512 0%

company-grab-symbol 512 0%

- winner-save-old-configurations 8,272 0%

winner-remember 8,272 0%

- flycheck-display-error-at-point-soon 480 0%

flycheck-overlays-at 480 0%

... 0 0%

-- End of Alef Font Report --

Source-Code-Pro-Font Report:

- command-execute 70,705,811 76%

- call-interactively 70,705,811 76%

- funcall-interactively 53,749,219 57%

- previous-line 43,518,530 46%

- line-move 43,517,474 46%

- line-move-visual 27,488,050 29%

current-bidi-paragraph-direction 1,834 0%

- line-move-partial 6,336 0%

- default-line-height 6,336 0%

default-font-height 6,336 0%

- default-line-height 6,336 0%

default-font-height 6,336 0%

- window-inside-pixel-edges 2,890 0%

- window-edges 1,056 0%

window-current-scroll-bars 1,056 0%

line-pixel-height 1,834 0%

- called-interactively-p 1,056 0%

- #<compiled 0x100085319> 1,056 0%

backtrace-frame 1,056 0%

- execute-extended-command 5,668,654 6%

- command-execute 5,363,382 5%

- call-interactively 5,363,382 5%

- funcall-interactively 5,360,116 5%

- profiler-report 5,323,064 5%

- profiler-report-memory 3,692,367 3%

- profiler-memory-profile 1,897,130 2%

profiler-make-profile 1,834 0%

- profiler-report-profile-other-window 1,795,237 1%

- switch-to-buffer-other-window 1,785,273 1%

- pop-to-buffer 1,785,273 1%

- display-buffer 1,785,273 1%

- display-buffer-use-some-window 1,785,273 1%

window--display-buffer 1,785,273 1%

- profiler-report-setup-buffer 9,964 0%

- profiler-report-render-calltree 8,892 0%

- profiler-report-rerender-calltree 8,892 0%

- profiler-report-render-calltree-1 8,892 0%

- profiler-report-insert-calltree-children 8,188 0%

- mapc 8,188 0%

profiler-report-insert-calltree 8,188 0%

profiler-report-move-to-entry 704 0%

- profiler-report-setup-buffer-1 1,072 0%

profiler-report-make-buffer-name 32 0%

- profiler-report-cpu 1,630,697 1%

profiler-cpu-profile 1,614,048 1%

- profiler-report-profile-other-window 16,649 0%

- profiler-report-setup-buffer 14,696 0%

- profiler-report-render-calltree 13,624 0%

- profiler-report-rerender-calltree 13,624 0%

- profiler-report-render-calltree-1 13,624 0%

- profiler-calltree-build 12,408 0%

- profiler-calltree-build-unified 12,408 0%

- maphash 4,136 0%

#<compiled 0x400c8d> 4,136 0%

profiler-report-move-to-entry 704 0%

- profiler-report-header-line-format 512 0%

replace-regexp-in-string 512 0%

- profiler-report-setup-buffer-1 1,072 0%

profiler-report-make-buffer-name 32 0%

- switch-to-buffer-other-window 1,953 0%

- pop-to-buffer 1,953 0%

- display-buffer 1,953 0%

- display-buffer-use-some-window 1,953 0%

- window-resize 1,000 0%

- error 1,000 0%

apply 1,000 0%

window--display-buffer 953 0%

- fundamental-mode 37,052 0%

- run-mode-hooks 37,052 0%

- hack-local-variables 37,052 0%

- hack-local-variables-prop-line 19,884 0%

- set-auto-mode-1 19,884 0%

- inhibit-local-variables-p 19,372 0%

file-name-sans-versions 5,548 0%

- inhibit-local-variables-p 14,336 0%

file-name-sans-versions 512 0%

- hack-dir-local-variables 2,832 0%

- dir-locals-find-file 2,832 0%

- locate-dominating-file 2,832 0%

dir-locals--all-files 1,230 0%

abbreviate-file-name 1,090 0%

+ byte-code 3,202 0%

- execute-extended-command--shorter 182,200 0%

- completion-try-completion 164,800 0%

- completion--nth-completion 164,800 0%

- completion--some 164,800 0%

- #<compiled 0x51c8e5> 164,800 0%

- completion-pcm-try-completion 164,800 0%

- completion-pcm--merge-try 151,590 0%

completion-pcm--merge-completions 12,394 0%

- completion-pcm--find-all-completions 13,210 0%

- completion-pcm--all-completions 12,632 0%

completion-pcm--pattern->regex 512 0%

completion-pcm--string->pattern 578 0%

- execute-extended-command--shorter-1 17,400 0%

- execute-extended-command--shorter-1 8,188 0%

mapcar 8,188 0%

- sit-for 6,272 0%

- redisplay 6,272 0%

- redisplay_internal (C function) 2,560 0%

file-remote-p 2,560 0%

+ save-buffer 4,383,668 4%

+ next-line 120,208 0%

+ profiler-report-toggle-entry 48,320 0%

+ paredit-kill 6,166 0%

+ self-insert-command 1,024 0%

+ yank 1,024 0%

+ kill-buffer 953 0%

+ indent-for-tab-command 512 0%

+ handle-focus-in 160 0%

- byte-code 16,954,622 18%

- read-extended-command 15,167,772 16%

- completing-read 15,167,772 16%

- completing-read-default 15,167,772 16%

- read-from-minibuffer 15,160,148 16%

- redisplay_internal (C function) 1,656,864 1%

eval 2,454 0%

- command-execute 944 0%

call-interactively 944 0%

- read-buffer-to-switch 1,786,850 1%

- read-buffer 1,786,850 1%

- completing-read-default 1,786,850 1%

- read-from-minibuffer 624 0%

- command-execute 560 0%

- call-interactively 560 0%

- funcall-interactively 512 0%

- previous-line-or-history-element 512 0%

- previous-line 512 0%

- line-move 512 0%

line-move-visual 512 0%

- completing-read-default 1,970 0%

- read-from-minibuffer 64 0%

- command-execute 16 0%

call-interactively 16 0%

- redisplay_internal (C function) 22,015,781 23%

- eval 65,814 0%

if 44,352 0%

- jit-lock-function 65,082 0%

- jit-lock-fontify-now 63,732 0%

- jit-lock--run-functions 63,732 0%

- run-hook-wrapped 63,732 0%

- #<compiled 0x55d04d> 63,732 0%

- font-lock-fontify-region 63,732 0%

- font-lock-default-fontify-region 63,732 0%

- font-lock-fontify-keywords-region 63,732 0%

lisp--el-match-keyword 3,760 0%

#<compiled 0x1000d15c3> 3,680 0%

file-remote-p 41,562 0%

- #<compiled 0x100227471> 1,056 0%

apply 1,056 0%

- winner-save-old-configurations 91,512 0%

- winner-remember 91,512 0%

- winner-win-data 8,448 0%

- winner-sorted-window-list 5,280 0%

- sort 4,224 0%

#<compiled 0x1002f6651> 4,224 0%

winner-window-list 1,056 0%

- timer-event-handler 62,768 0%

- apply 53,256 0%

- flycheck-handle-idle-change 50,088 0%

- flycheck-buffer-automatically 50,088 0%

- flycheck-buffer 50,088 0%

- flycheck-get-checker-for-buffer 49,128 0%

- seq-find 49,128 0%

- seq-do 49,128 0%

- mapc 49,128 0%

- #<compiled 0x20a3251> 49,128 0%

- flycheck-may-use-checker 49,128 0%

flycheck-checker-supports-major-mode-p 32,752 0%

- flycheck-mark-all-overlays-for-deletion 480 0%

flycheck-overlays-in 480 0%

- flycheck-clear 480 0%

- flycheck-delete-all-overlays 480 0%

flycheck-overlays-in 480 0%

jit-lock-context-fontify 3,168 0%

- timer-inc-time 3,168 0%

timer-relative-time 2,112 0%

timer-until 2,120 0%

- timer-activate 2,112 0%

- timer--activate 2,112 0%

timer--time-less-p 2,112 0%

- timer-activate-when-idle 2,112 0%

- timer--activate 2,112 0%

timer--time-less-p 2,112 0%

- blink-cursor-end 1,056 0%

remove-hook 1,056 0%

- flycheck-display-error-at-point-soon 1,040 0%

flycheck-overlays-at 1,040 0%

... 0 0%

-- End of Source Code Pro Font Report --

In GNU Emacs 26.1 (build 1, x86_64-w64-mingw32)

of 2018-05-30 built on CIRROCUMULUS

Repository revision: 07f8f9bc5a51f5aa94eb099f3e15fbe0c20ea1ea

Windowing system distributor 'Microsoft Corp.', version 10.0.17134

Recent messages:

You can run the command ‘profiler-report’ with M-x pro-rep RET

After 0 kbd macro iterations: line-move-visual: End of buffer [19 times]

Wrote c:/Users/Lordnik_PC/Desktop/report_unicode_source_code_pro_alef.txt

ediff-files-internal: Files A and B are the same

Reading file c:/Users/Lordnik_PC/Desktop/report_unicode_source_code_pro_alef.txt ...

Reading file c:/Users/Lordnik_PC/Desktop/report_unicode_source_code_pro.txt ...

Computing differences between report_unicode_source_code_pro_alef.txt and report_unicode_source_code_pro.txt ...

Buffer A: Processing difference region 0 of 6

Buffer B: Processing difference region 0 of 6

Processing difference regions ... done

Configured using:

'configure --without-dbus --host=x86_64-w64-mingw32

--without-compress-install 'CFLAGS=-O2 -static -g3''

Configured features:

XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY ACL GNUTLS LIBXML2 ZLIB

TOOLKIT_SCROLL_BARS THREADS LCMS2

Important settings:

value of $LANG: DES

locale-coding-system: cp1252

Major mode: Text

Minor modes in effect:

global-display-line-numbers-mode: t

display-line-numbers-mode: t

which-key-mode: t

shell-dirtrack-mode: t

savehist-mode: t

winner-mode: t

cl-old-struct-compat-mode: t

tooltip-mode: t

global-eldoc-mode: t

electric-indent-mode: t

mouse-wheel-mode: t

file-name-shadow-mode: t

global-font-lock-mode: t

font-lock-mode: t

blink-cursor-mode: t

auto-composition-mode: t

auto-encryption-mode: t

auto-compression-mode: t

column-number-mode: t

line-number-mode: t

transient-mark-mode: t

Load-path shadows:

c:/Users/Lordnik_PC/AppData/Roaming/.emacs.d/elpa/less-css-mode-20160930.2153/less-css-mode hides e:/emacs-26.1-x86_64/share/emacs/26.1/lisp/textmodes/less-css-mode

Features:

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rfc822 mml mml-sec epa derived epg gnus-util rmail rmail-loaddefs

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ess-mouse mouseme browse-url ess-swv ess-noweb ess-noweb-font-lock-mode

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ess-roxy essddr ess-rd hideshow ess-s-lang ess-help ess ess-noweb-mode

ess-inf ess-tracebug tramp tramp-compat tramp-loaddefs trampver

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org-src ob-ref ob-lob ob-table ob-keys ob-exp ob-comint comint

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find-func cal-menu calendar cal-loaddefs google-translate

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google-translate-core google-translate-tk url url-proxy url-privacy

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dracula-theme iso-transl finder-inf ess-generics tex-site info package

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tabulated-list replace newcomment text-mode elisp-mode lisp-mode

prog-mode register page menu-bar rfn-eshadow isearch timer select

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term/tty-colors frame cl-generic cham georgian utf-8-lang misc-lang

vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932

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button faces cus-face macroexp files text-properties overlay sha1 md5

base64 format env code-pages mule custom widget hashtable-print-readable

backquote w32notify w32 lcms2 multi-tty make-network-process emacs)

Memory information:

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(symbols 56 42482 1)

(miscs 48 1183 662)

(strings 32 124851 9534)

(string-bytes 1 3662767)

(vectors 16 190638)

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