GNU bug report logs - #33350
26.1; Emacs performance strike when using source-code-pro and unicodes together

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Package: emacs;

Reported by: michi bliblablub <michi98game <at> gmail.com>

Date: Mon, 12 Nov 2018 00:50:02 UTC

Severity: normal

Found in version 26.1

Done: Glenn Morris <rgm <at> gnu.org>

Bug is archived. No further changes may be made.

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Report forwarded to bug-gnu-emacs <at> gnu.org:
bug#33350; Package emacs. (Mon, 12 Nov 2018 00:50:02 GMT) Full text and rfc822 format available.

Acknowledgement sent to michi bliblablub <michi98game <at> gmail.com>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Mon, 12 Nov 2018 00:50:02 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: michi bliblablub <michi98game <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 26.1; Emacs performance strike when using source-code-pro and
 unicodes together
Date: Mon, 12 Nov 2018 00:28:08 +0100
[Message part 1 (text/plain, inline)]
From: Lordnik_PC <at> LORDNIKPC.i-did-not-set--mail-host-address--so-tickle-me
To: bug-gnu-emacs <at> 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%
                 - profiler-calltree-walk                       8,188   0%
                  - profiler-calltree-walk                      8,188   0%
                   - profiler-calltree-walk                     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                    17,400   0%
       - execute-extended-command--shorter-1                    8,188   0%
          mapcar                                                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:
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TOOLKIT_SCROLL_BARS THREADS LCMS2

Important settings:
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Major mode: Text

Minor modes in effect:
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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
mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils
mailheader sendmail rfc2047 rfc2045 ietf-drums mail-utils jka-compr
ediff-merg ediff-wind ediff-diff ediff-mult ediff-help ediff-init
ediff-util ediff two-column misearch multi-isearch eieio-opt speedbar
sb-image ezimage dframe help-fns radix-tree profiler
display-line-numbers company-oddmuse company-keywords company-etags
etags company-gtags company-dabbrev-code company-dabbrev company-files
company-capf company-cmake company-xcode company-clang company-semantic
company-eclim company-template company-css company-nxml company-bbdb
company pcase undo-tree diff which-key linum flycheck cl-extra help-mode
rx dash paredit nameless lisp-mnt elec-pair ess-site ess-toolbar
ess-mouse mouseme browse-url ess-swv ess-noweb ess-noweb-font-lock-mode
ess-bugs-l essd-els ess-xls-d ess-vst-d ess-stata-mode ess-stata-lang
cc-vars cc-defs make-regexp ess-sp6-d ess-sp5-d ess-sp4-d ess-dde
ess-sas-d ess-sas-l ess-sas-a ess-s4-d ess-s3-d ess-omg-d ess-omg-l
ess-arc-d ess-lsp-l ess-sp6w-d ess-sp3-d ess-julia ess-r-mode
ess-r-flymake flymake-proc flymake warnings thingatpt ess-r-xref xref
project subr-x ess-trns ess-r-package ess-r-syntax ess-r-completion
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
ucs-normalize shell parse-time compile ess-utils ess-custom executable
org-agenda org-element avl-tree generator org advice org-macro
org-footnote org-pcomplete pcomplete org-list org-faces org-entities
noutline outline easy-mmode org-version ob-emacs-lisp ob ob-tangle
org-src ob-ref ob-lob ob-table ob-keys ob-exp ob-comint comint
ansi-color ob-core ob-eval org-compat org-macs org-loaddefs format-spec
find-func cal-menu calendar cal-loaddefs google-translate
google-translate-default-ui google-translate-core-ui ido
google-translate-core google-translate-tk url url-proxy url-privacy
url-expand url-methods url-history url-cookie url-domsuf url-util
mailcap json map edmacro kmacro savehist winner ring mm-util mail-prsvr
dracula-theme iso-transl finder-inf ess-generics tex-site info package
easymenu epg-config url-handlers url-parse auth-source cl-seq eieio
eieio-core cl-macs eieio-loaddefs password-cache url-vars seq byte-opt
gv bytecomp byte-compile cconv cl-loaddefs cl-lib time-date mule-util
tooltip eldoc electric uniquify ediff-hook vc-hooks lisp-float-type
mwheel dos-w32 ls-lisp disp-table term/w32-win w32-win w32-vars
term/common-win tool-bar dnd fontset image regexp-opt fringe
tabulated-list replace newcomment text-mode elisp-mode lisp-mode
prog-mode register page menu-bar rfn-eshadow isearch timer select
scroll-bar mouse jit-lock font-lock syntax facemenu font-core
term/tty-colors frame cl-generic cham georgian utf-8-lang misc-lang
vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932
hebrew greek romanian slovak czech european ethiopic indian cyrillic
chinese composite charscript charprop case-table epa-hook jka-cmpr-hook
help simple abbrev obarray minibuffer cl-preloaded nadvice loaddefs
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:
((conses 16 497849 56271)
 (symbols 56 42482 1)
 (miscs 48 1183 662)
 (strings 32 124851 9534)
 (string-bytes 1 3662767)
 (vectors 16 190638)
 (vector-slots 8 4240524 63812)
 (floats 8 211 709)
 (intervals 56 6037 963)
 (buffers 992 42))
[Message part 2 (text/html, inline)]

Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#33350; Package emacs. (Mon, 12 Nov 2018 03:36:02 GMT) Full text and rfc822 format available.

Message #8 received at 33350 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: michi bliblablub <michi98game <at> gmail.com>
Cc: 33350 <at> debbugs.gnu.org
Subject: Re: bug#33350: 26.1;
 Emacs performance strike when using source-code-pro and unicodes
 together
Date: Mon, 12 Nov 2018 05:34:56 +0200
> From: michi bliblablub <michi98game <at> gmail.com>
> Date: Mon, 12 Nov 2018 00:28:08 +0100
> 
> 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)?

Does it help to set inhibit-compacting-font-caches to a non-nil value?




Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#33350; Package emacs. (Tue, 13 Nov 2018 03:28:02 GMT) Full text and rfc822 format available.

Message #11 received at 33350 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: michi bliblablub <michi98game <at> gmail.com>
Cc: 33350 <at> debbugs.gnu.org
Subject: Re: bug#33350: 26.1; Emacs performance strike when using
 source-code-pro and unicodes together
Date: Tue, 13 Nov 2018 05:27:35 +0200
[Please use Reply All to keep the bug tracker on the CC list.]

> From: michi bliblablub <michi98game <at> gmail.com>
> Date: Mon, 12 Nov 2018 21:35:58 +0100
> 
> What a wizard. Jeah it helps, thank you very much. 
> I read a little conversation (you and Drew Adams) on the internet that this variable is a "free-escape". 
> Can i give you more information so it may get easier for to find the real problem? What would be of interest?

The problem is known: it happens with very large fonts.  If you must
use this font, then just keep inhibit-compacting-font-caches
customized to non-nil value.




bug closed, send any further explanations to 33350 <at> debbugs.gnu.org and michi bliblablub <michi98game <at> gmail.com> Request was from Glenn Morris <rgm <at> gnu.org> to control <at> debbugs.gnu.org. (Fri, 23 Nov 2018 01:07:02 GMT) Full text and rfc822 format available.

bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Fri, 21 Dec 2018 12:24:05 GMT) Full text and rfc822 format available.

This bug report was last modified 5 years and 99 days ago.

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