[Not a BUG] Flyspell on prog-mode with lsp-mode

[CsBigDataHub]

Thank you for the bug report

• I am using the latest version of Centaur Emacs.
• I checked FAQ.

Bug description

I have recently noticed that, enabling flyspell on prog-mode is slowing down completions and typing as a whole.
This is the profiler report on python-mode with lsp-mode on pyright. Just posting it here as a FYI. I have disabled flyspell-prog-mode, which made things smooth. Your thoughts?

Steps to reproduce

None

Expected behavior

None

OS

MacOS

Emacs Version

gccemacs-28

Error callstack

CPU

        3852  48% - flyspell-post-command-hook
        3821  48%  - flyspell-check-word-p
        3772  47%   - sit-for
        2891  36%    - timer-event-handler
        2891  36%     - apply
        2445  30%      - flycheck-display-error-at-point
        2445  30%       - flycheck-display-errors
        2445  30%        - flycheck-popup-tip-show-popup
        2445  30%         - popup-tip
        2443  30%          - popup-create
        2443  30%           - apply
        2439  30%            - #<subr popup-create>
         174   2%               popup-vertical-motion
          70   0%             - posn-at-point
          69   0%              - eval
          22   0%               - doom-modeline-format--main
           6   0%                - format-mode-line
           6   0%                 - eval
           2   0%                    doom-modeline-segment--major-mode
           2   0%                - doom-modeline--font-width
           1   0%                   face-all-attributes
           9   0%               - centaur-tabs-line
           6   0%                - centaur-tabs-current-tabset
           6   0%                   centaur-tabs-buffer-tabs
           8   0%                 doom-modeline-segment--buffer-position
           6   0%                 doom-modeline-segment--major-mode
           4   0%                 doom-modeline-segment--remote-host
           3   0%               - doom-modeline-segment--buffer-info
           1   0%                - doom-modeline-update-buffer-file-state-icon
           1   0%                 - doom-modeline-buffer-file-state-icon
           1   0%                    doom-modeline-icon
           1   0%               - doom-modeline-segment--window-number
           1   0%                - aw-update
           1   0%                 - apply
           1   0%                    doom-modeline-aw-update
           1   0%               - doom-modeline-segment--checker
           1   0%                  doom-modeline--active
           1   0%                 doom-modeline-segment--buffer-encoding
           1   0%               - doom-modeline-segment--minor-modes
           1   0%                  doom-modeline-icon
           1   0%                 doom-modeline-segment--workspace-name
           1   0%                 doom-modeline-segment--input-method
           1   0%                 doom-modeline-segment--lsp
           1   0%               - doom-modeline-segment--modals
           1   0%                - doom-modeline--modal-icon
           1   0%                   doom-modeline-icon
           4   0%            - doom-modeline-update-buffer-file-name
           4   0%             - doom-modeline-buffer-file-name
           4   0%                doom-modeline--buffer-file-name
         430   5%      - company-idle-begin
         430   5%       - company-auto-begin
         430   5%        - company--perform
         429   5%         - company--begin-new
         426   5%          - company-call-frontends
         426   5%           - company-box-frontend
         426   5%            - company-box-show
         296   3%             - company-box--display
         296   3%              - apply
         296   3%               - my-company-box--display
         294   3%                - let
         276   3%                 - company-box--compute-frame-position
         135   1%                  - company-box--point-bottom
           7   0%                   - window-in-direction
           7   0%                    - eval
           4   0%                     - centaur-tabs-line
           4   0%                      - centaur-tabs-current-tabset
           4   0%                       - centaur-tabs-buffer-tabs
           4   0%                        - centaur-tabs-buffer-update-groups
           4   0%                           cl-mapcar
           2   0%                     - doom-modeline-format--main
           1   0%                      - format-mode-line
           1   0%                         eval
           4   0%                  - company-box--prefix-pos
           4   0%                   - eval
           2   0%                    - doom-modeline-segment--window-number
           2   0%                     - aw-update
           2   0%                      - apply
           2   0%                       - doom-modeline-aw-update
           2   0%                        - aw-window-list
           2   0%                         - sort
           2   0%                          - cl-remove-if
           1   0%                             cond
           1   0%                           - cl-remove
           1   0%                            - #<lambda 0x1e11148efeaf8>
           1   0%                             - let
           1   0%                              - or
           1   0%                               - aw-ignored-p
           1   0%                                - or
           1   0%                                 - and
           1   0%                                    or
           1   0%                    - centaur-tabs-line
           1   0%                     - centaur-tabs-current-tabset
           1   0%                      - centaur-tabs-buffer-tabs
           1   0%                       - centaur-tabs-buffer-update-groups
           1   0%                          cl-mapcar
           1   0%                      doom-modeline-segment--remote-host
           7   0%                 - company-box--move-selection
           4   0%                  - company-box--render-lines
           4   0%                   - #<compiled -0x2819f91d5929ab3>
           2   0%                    - company-box--make-line
           1   0%                     - company-box--candidate-string
           1   0%                        company-fill-propertize
           1   0%                      apply
           1   0%                  - #<compiled 0x3270aef5054abc1>
           1   0%                   - internal--after-with-selected-window
           1   0%                    - select-window
           1   0%                     - apply
           1   0%                      - ad-Advice-select-window
           1   0%                       - evil-refresh-cursor
           1   0%                        - evil-set-cursor
           1   0%                           evil-set-cursor-color
           4   0%                   if
           2   0%                 - company-box--update-frame-position
           2   0%                    company-box--set-width
           6   0%             - company-box--with-icons-p
           6   0%              - eval
           3   0%               - centaur-tabs-line
           3   0%                - centaur-tabs-current-tabset
           3   0%                 - centaur-tabs-buffer-tabs
           3   0%                  - centaur-tabs-buffer-update-groups
           3   0%                     cl-mapcar
           1   0%                 doom-modeline-segment--workspace-name
           1   0%                 doom-modeline-segment--major-mode
           1   0%                 doom-modeline-segment--buffer-position
           2   0%          - company--multi-backend-adapter
           2   0%           - company--force-sync
           2   0%            - company-capf
           2   0%             - apply
           2   0%              - company-anywhere-capf
           2   0%               - if
           2   0%                - let
           2   0%                 - company--capf-data
           2   0%                  - company--capf-data-real
           2   0%                   - company--capf-wrapper
           2   0%                    - completion--capf-wrapper
           2   0%                     - lsp-completion-at-point
           2   0%                        syntax-ppss
           1   0%          - company-calculate-candidates
           1   0%           - run-with-timer
           1   0%            - run-at-time
           1   0%             - timer-activate
           1   0%                timer--activate
           1   0%         - company-call-frontends
           1   0%          - company-box-frontend
           1   0%           - company-box--update
           1   0%            - company-box--move-selection
           1   0%             - #<compiled 0x3270aef5054abc1>
           1   0%              - internal--after-with-selected-window
           1   0%               - select-window
           1   0%                - apply
           1   0%                   ad-Advice-select-window
           1   0%        auto-revert-buffers
          73   0%    - redisplay_internal (C function)
          31   0%     - jit-lock-function
          31   0%      - jit-lock-fontify-now
          30   0%       - jit-lock--run-functions
          30   0%        - #<compiled 0x19d0983ca0f8bb3d>
          22   0%         - highlight-indent-guides--guide-region
          16   0%            syntax-ppss
           2   0%          - font-lock-fontify-region
           2   0%           - #<compiled -0xbab49da151e1cd4>
           2   0%            - apply
           2   0%             - tree-sitter-hl--highlight-region-with-fallback
           2   0%              - tree-sitter-hl--highlight-region
           1   0%               - tsc--query-cursor-captures-1
           1   0%                  tsc--buffer-substring-no-properties
           1   0%               - font-lock-fontify-keywords-region
           1   0%                - rainbow-delimiters--propertize
           1   0%                   syntax-ppss
           1   0%          - highlight-indent-guides--update-line-cache
           1   0%             syntax-ppss
           1   0%          - beginning-of-line
           1   0%             apply
           7   0%         - font-lock-fontify-region
           7   0%          - #<compiled -0xbab49da151e1cd4>
           7   0%           - apply
           7   0%            - tree-sitter-hl--highlight-region-with-fallback
           6   0%             - tree-sitter-hl--highlight-region
           5   0%              - font-lock-fontify-keywords-region
           2   0%               - rainbow-delimiters--propertize
           2   0%                  syntax-ppss
           2   0%               - color-identifiers:colorize
           2   0%                - color-identifiers:scan-identifiers
           1   0%                   #<subr F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_38>
           1   0%                 - looking-back
           1   0%                  - search-backward-regexp
           1   0%                     apply
           1   0%       - run-with-timer
           1   0%        - run-at-time
           1   0%         - timer-activate
           1   0%            timer--activate
          31   0%     - eval
          14   0%      - centaur-tabs-line
          14   0%       - centaur-tabs-current-tabset
          14   0%        - centaur-tabs-buffer-tabs
          13   0%         - centaur-tabs-buffer-update-groups
          11   0%            cl-mapcar
           1   0%          - centaur-tabs-buffer-list
           1   0%             cl-mapcar
           8   0%      - doom-modeline-format--main
           5   0%       - format-mode-line
           5   0%        - eval
           1   0%           doom-modeline-segment--vcs
           2   0%      - doom-modeline-segment--buffer-info
           2   0%       - doom-modeline-update-buffer-file-state-icon
           2   0%        - doom-modeline-buffer-file-state-icon
           2   0%           doom-modeline-icon
           2   0%        doom-modeline-segment--buffer-position
           1   0%        doom-modeline-segment--remote-host
           1   0%        doom-modeline-segment--checker
           4   0%     - page-break-lines--update-display-tables
           3   0%      - page-break-lines--update-display-table
           2   0%       - #<compiled 0x3270aef5054abc1>
           2   0%        - internal--after-with-selected-window
           2   0%         - select-window
           2   0%          - apply
           2   0%           - ad-Advice-select-window
           1   0%            - evil-refresh-cursor
           1   0%               evil-set-cursor
           1   0%       - select-window
           1   0%        - apply
           1   0%         - ad-Advice-select-window
           1   0%          - evil-refresh-cursor
           1   0%             evil-set-cursor
           1   0%     - aw-update
           1   0%      - apply
           1   0%       - doom-modeline-aw-update
           1   0%        - aw-window-list
           1   0%         - sort
           1   0%          - cl-remove-if
           1   0%           - cl-remove
           1   0%            - #<lambda 0x1e11148efeaf8>
           1   0%             - let
           1   0%              - or
           1   0%               - aw-ignored-p
           1   0%                  or
           1   0%     - #<compiled 0x81251227acc01ee>
           1   0%        apply
           1   0%       substitute-command-keys
           1   0%     - popper--update-popups
           1   0%      - popper--find-popups
           1   0%       - popper-popup-p
           1   0%        - seq-some
           1   0%         - seq-do
           1   0%          - mapc
           1   0%           - #<compiled 0xa72acd7113710ce>
           1   0%              #<compiled 0x178f490b44fdc24e>
           4   0%    - #<compiled -0x113bfab9ff1a7823>
           1   0%     - mapc
           1   0%      - #<compiled -0xae0e46c2aa4472a>
           1   0%       - lsp--parser-on-message
           1   0%        - lsp--on-notification
           1   0%         - lsp--on-diagnostics
           1   0%          - lsp--on-diagnostics-update-stats
           1   0%             lsp-diagnostics--update-path
           2   0%     ispell-get-otherchars
           4   0%  - flyspell-check-pre-word-p
           4   0%     ispell-get-otherchars
           1   0%  - flyspell-word
           1   0%   - flyspell-get-word
           1   0%      ispell-get-otherchars
        2400  30% + timer-event-handler
         560   7% + command-execute
         423   5% + ...
         391   4% + company-post-command
         142   1% + redisplay_internal (C function)
         100   1% + flycheck-popup-tip-delete-popup
          11   0% + #<compiled -0x5de4e2fad6bc681>
           6   0% + #<compiled -0x113bfab9ff1a7823>
           5   0% + jit-lock--antiblink-post-command
           2   0% + #<compiled -0x2225a88d75a0999>
           2   0% + gcmh-register-idle-gc
           1   0% + lsp--post-command
           1   0% + winner-save-old-configurations

Memory

    218,732,598  48% - flyspell-post-command-hook
    218,666,310  48%  - flyspell-check-word-p
    164,075,210  36%   - sit-for
    124,181,841  27%    - timer-event-handler
    124,179,025  27%     - apply
    102,920,654  22%      - flycheck-display-error-at-point
    102,920,254  22%       - flycheck-display-errors
    102,920,254  22%        - flycheck-popup-tip-show-popup
    102,919,238  22%         - popup-tip
    102,759,853  22%          - popup-create
    102,759,853  22%           - apply
    102,741,269  22%            - #<subr popup-create>
      4,367,608   0%               popup-vertical-motion
      3,585,391   0%             - posn-at-point
      3,585,391   0%              - eval
      1,374,088   0%               - doom-modeline-format--main
        713,968   0%                - format-mode-line
        713,968   0%                 - eval
        113,960   0%                  - doom-modeline-segment--minor-modes
        102,664   0%                     doom-modeline-icon
        107,280   0%                    doom-modeline-segment--buffer-encoding
         98,520   0%                    doom-modeline-segment--major-mode
         47,816   0%                    doom-modeline-segment--vcs
         28,704   0%                    doom-modeline-segment--checker
         24,680   0%                    doom-modeline-segment--lsp
          6,336   0%                    doom-modeline-segment--input-method
          6,256   0%                    doom-modeline-segment--debug
         16,816   0%                - doom-modeline--font-width
          3,168   0%                   face-all-attributes
        527,487   0%                 doom-modeline-segment--remote-host
        265,848   0%               - centaur-tabs-line
        176,352   0%                - centaur-tabs-current-tabset
        176,352   0%                 - centaur-tabs-buffer-tabs
         24,288   0%                    centaur-tabs-buffer-update-groups
          3,168   0%                    centaur-tabs-put-cache
        124,824   0%                 doom-modeline-segment--buffer-encoding
        123,512   0%               - doom-modeline-segment--buffer-info
         52,176   0%                - doom-modeline-update-buffer-file-state-icon
         52,176   0%                 - doom-modeline-buffer-file-state-icon
         51,120   0%                    doom-modeline-icon
        108,016   0%                 doom-modeline-segment--buffer-position
         96,104   0%               - doom-modeline-segment--window-number
         84,568   0%                - aw-update
         84,568   0%                 - apply
         84,568   0%                  - doom-modeline-aw-update
         58,608   0%                   - aw-window-list
         58,608   0%                    - sort
         58,608   0%                     - cl-remove-if
         49,104   0%                      - cl-remove
         38,544   0%                       - #<lambda 0x1e11148efeaf8>
         21,648   0%                        - let
         21,648   0%                         - or
         16,368   0%                            string=
          7,392   0%                      - cond
          7,392   0%                         cl-mapcan
         14,424   0%                     avy-traverse
          7,392   0%                   - avy-tree
          7,392   0%                    - #<compiled 0x14925119079bf8e1>
          5,280   0%                     - cl-pairlis
          3,168   0%                        cl-mapcar
          1,056   0%                       mapcar
          2,112   0%                - cl-mapcan
          2,112   0%                   #<compiled -0x164f1bf7ddcdb2c9>
         86,600   0%                 doom-modeline-segment--major-mode
         73,920   0%                 doom-modeline-segment--workspace-name
         72,704   0%               - doom-modeline-segment--modals
         34,456   0%                - doom-modeline--modal-icon
         32,344   0%                   doom-modeline-icon
         63,432   0%               - doom-modeline-segment--minor-modes
         39,544   0%                  doom-modeline-icon
         50,680   0%                 doom-modeline-segment--vcs
         22,568   0%                 doom-modeline-segment--matches
         17,592   0%                 doom-modeline-segment--checker
         16,536   0%                 doom-modeline-segment--lsp
          8,208   0%                 doom-modeline-segment--debug
          2,112   0%                 doom-modeline-segment--input-method
         41,606   0%             - flycheck-handle-change
         41,606   0%                flycheck-buffer-automatically
         25,296   0%             - lsp-on-change
         16,848   0%                lsp--remove-overlays
          4,224   0%              - run-with-idle-timer
          4,224   0%               - timer-activate-when-idle
          4,224   0%                - timer--activate
          4,224   0%                   timer--time-less-p
          3,168   0%              - lsp--after-change
          3,168   0%               - run-with-idle-timer
          3,168   0%                - timer-activate-when-idle
          3,168   0%                 - timer--activate
          3,168   0%                    timer--time-less-p
          1,056   0%              - mapc
          1,056   0%                 #<compiled -0x152503bfece5169a>
          1,056   0%             - tree-sitter--after-change
          1,056   0%              - tree-sitter--do-parse
          1,056   0%               - tsc-parse-chunks
          1,056   0%                  tsc--buffer-input
         14,440   0%            - doom-modeline-update-buffer-file-name
          4,144   0%               doom-modeline-buffer-file-name
         64,632   0%          - popup-draw
         44,768   0%           - popup-set-line-item
         31,200   0%            - popup-create-line-string
         28,032   0%             - popup-substring-by-width
         11,416   0%                replace-regexp-in-string
          4,224   0%             popup-hide-line
         27,553   0%          - popup-fill-string
         13,488   0%           - truncate-string-to-width
         13,488   0%            - apply
          1,056   0%               #<subr truncate-string-to-width>
          4,224   0%             centaur-tabs-on-modifying-buffer
          4,104   0%           - buffer-substring
          4,104   0%            - apply
          4,104   0%               ad-Advice-buffer-substring
         12,392   0%          - popup-replace-displayable
          1,056   0%             char-displayable-p
          1,016   0%           flycheck-popup-tip-format-errors
            400   0%         flycheck-overlay-errors-at
     21,246,855   4%      - company-idle-begin
     21,244,199   4%       - company-auto-begin
     21,244,199   4%        - company--perform
     21,225,151   4%         - company--begin-new
     21,177,375   4%          - company-call-frontends
     21,177,375   4%           - company-box-frontend
     21,174,247   4%            - company-box-show
     14,488,124   3%             - company-box--display
     14,488,124   3%              - apply
     14,488,124   3%               - my-company-box--display
     14,481,868   3%                - let
     13,444,127   2%                 - company-box--compute-frame-position
      6,724,625   1%                  - company-box--point-bottom
        200,253   0%                   - window-in-direction
        200,253   0%                    - eval
         63,627   0%                     - doom-modeline-format--main
         30,115   0%                      - format-mode-line
         30,115   0%                       - eval
          4,836   0%                          doom-modeline-segment--buffer-encoding
          4,479   0%                          doom-modeline-segment--major-mode
          3,128   0%                        - doom-modeline-segment--minor-modes
          3,128   0%                           doom-modeline-icon
          1,056   0%                          doom-modeline-segment--input-method
          1,056   0%                          doom-modeline-segment--vcs
          1,016   0%                          doom-modeline-segment--checker
          1,056   0%                        doom-modeline--font-width
         39,831   0%                       doom-modeline-segment--remote-host
         19,008   0%                     - centaur-tabs-line
         14,784   0%                      - centaur-tabs-current-tabset
         14,784   0%                       - centaur-tabs-buffer-tabs
          4,224   0%                        - centaur-tabs-buffer-update-groups
          1,056   0%                         - centaur-tabs-buffer-list
          1,056   0%                            centaur-tabs-filter-out
          1,056   0%                         - cl-mapcar
          1,056   0%                          - #<subr F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_37>
          1,056   0%                           - centaur-tabs-buffer-groups
          1,056   0%                            - list
          1,056   0%                             - cond
          1,056   0%                                derived-mode-p
          1,056   0%                          centaur-tabs-put-cache
          8,184   0%                       doom-modeline-segment--checker
          6,908   0%                       doom-modeline-segment--buffer-encoding
          4,224   0%                       doom-modeline-segment--workspace-name
          3,423   0%                       doom-modeline-segment--major-mode
          3,128   0%                     - doom-modeline-segment--modals
          2,112   0%                      - doom-modeline--modal-icon
          2,112   0%                         doom-modeline-icon
          3,128   0%                     - doom-modeline-segment--buffer-info
          3,128   0%                      - doom-modeline-update-buffer-file-state-icon
          3,128   0%                       - doom-modeline-buffer-file-state-icon
          3,128   0%                          doom-modeline-icon
          2,112   0%                     - doom-modeline-segment--window-number
          2,112   0%                      - aw-update
          2,112   0%                       - apply
          2,112   0%                        - doom-modeline-aw-update
          2,112   0%                         - aw-window-list
          2,112   0%                          - sort
          2,112   0%                           - cl-remove-if
          2,112   0%                            - cl-remove
          1,056   0%                             - #<lambda 0x1e11148efeaf8>
          1,056   0%                              - let
          1,056   0%                                 or
          2,112   0%                     - doom-modeline-segment--minor-modes
          2,112   0%                        doom-modeline-icon
          2,072   0%                       doom-modeline-segment--vcs
          2,016   0%                       doom-modeline-segment--buffer-position
          1,016   0%                       doom-modeline-segment--matches
        197,162   0%                  - company-box--prefix-pos
        197,162   0%                   - eval
         64,683   0%                    - doom-modeline-format--main
         34,259   0%                     - format-mode-line
         34,259   0%                      - eval
          6,551   0%                         doom-modeline-segment--major-mode
          5,852   0%                         doom-modeline-segment--buffer-encoding
          3,128   0%                       - doom-modeline-segment--minor-modes
          3,128   0%                          doom-modeline-icon
          1,056   0%                         doom-modeline-segment--vcs
          1,056   0%                         doom-modeline-segment--input-method
          1,016   0%                         doom-modeline-segment--debug
          2,112   0%                       doom-modeline--font-width
         46,020   0%                      doom-modeline-segment--remote-host
         17,952   0%                    - centaur-tabs-line
         13,728   0%                     - centaur-tabs-current-tabset
         13,728   0%                      - centaur-tabs-buffer-tabs
          3,168   0%                       - centaur-tabs-buffer-update-groups
          1,056   0%                        - cl-mapcar
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          9,504   0%       - walk-windows
          9,504   0%        - #<compiled 0x1824e343b1a873a3>
          9,504   0%         - internal--after-save-selected-window
          9,504   0%          - select-window
          9,504   0%           - apply
          9,504   0%            - ad-Advice-select-window
          9,504   0%             - evil-refresh-cursor
          9,504   0%                evil-set-cursor
          9,504   0%       doom-modeline-window-size-change-function
          9,504   0%     - evil-refresh-cursor
          9,504   0%        evil-set-cursor
          8,448   0%       lsp-ui-doc--on-state-changed
          6,336   0%       keymap-canonicalize
          4,184   0%     - aw-update
          4,184   0%      - apply
          4,184   0%       - doom-modeline-aw-update
          2,112   0%        - aw-window-list
          2,112   0%         - sort
          2,112   0%          - cl-remove-if
          2,112   0%           - cl-remove
          2,112   0%            - #<lambda 0x1e11148efeaf8>
          1,056   0%             - let
          1,056   0%                or
          1,056   0%        - avy-tree
          1,056   0%         - #<compiled 0x14925119079bf8e1>
          1,056   0%            cl-pairlis
          1,016   0%          avy-traverse
          2,112   0%     - #<compiled 0x81251227acc01ee>
          2,112   0%      - apply
          2,112   0%       - redisplay--pre-redisplay-functions
          1,056   0%        - run-hook-with-args
          1,056   0%           redisplay--update-region-highlight
          2,112   0%       bound-and-true-p
          2,112   0%     - company-box--handle-scroll
          2,112   0%      - company-box--maybe-move-number
          1,056   0%         company-box--update-numbers
          1,056   0%     - or
          1,056   0%        derived-mode-p
          1,056   0%     - mode-line-default-help-echo
          1,056   0%      - window-at-side-p
          1,056   0%         window-pixel-edges
        240,918   0%    - #<compiled -0x113bfab9ff1a7823>
        144,364   0%     - mapc
        144,364   0%      - #<compiled -0xae0e46c2aa4472a>
        144,364   0%       - lsp--parser-on-message
        144,364   0%        - lsp--on-notification
        144,364   0%         - lsp--on-diagnostics
        121,074   0%          - lsp--on-diagnostics-update-stats
         64,194   0%           - lsp--uri-to-path
         63,138   0%            - lsp--uri-to-path-1
          5,406   0%             - url-generic-parse-url
          4,224   0%                centaur-tabs-on-modifying-buffer
         40,512   0%             lsp-diagnostics--update-path
         18,090   0%          - lsp--uri-to-path
         18,090   0%           - lsp--uri-to-path-1
          5,406   0%            - url-generic-parse-url
          4,224   0%               centaur-tabs-on-modifying-buffer
         30,972   0%     - apply
          5,280   0%      - insert
          5,280   0%         centaur-tabs-on-modifying-buffer
          8,192   0%     - mapcar
          8,192   0%      - lsp--parse-header
          4,096   0%         s-trim-left
         28,736   0%  - flyspell-word
         16,032   0%   - flyspell-get-word
          7,744   0%    - search-forward-regexp
          7,744   0%     - apply
          7,744   0%        ad-Advice-search-forward-regexp
          5,120   0%    - search-backward-regexp
          5,120   0%     - apply
          5,120   0%        ad-Advice-search-backward-regexp
    134,175,494  29% + timer-event-handler
     77,964,740  17% + company-post-command
     18,746,856   4% + command-execute
      3,543,373   0% + redisplay_internal (C function)
      1,639,842   0% + flycheck-popup-tip-delete-popup
        179,921   0% + #<compiled -0x113bfab9ff1a7823>
        151,454   0% + #<compiled -0x5de4e2fad6bc681>
         83,324   0% + symbol-overlay-post-command
         21,400   0% + gcmh-register-idle-gc
         17,976   0% + lsp--post-command
         15,840   0% + lsp-ui-sideline
         15,600   0% + winner-save-old-configurations
          6,336   0% + flycheck-maybe-display-error-at-point-soon
          5,242   0% + #<compiled -0x2225a88d75a0999>
          4,224   0% + eldoc-schedule-timer
          2,048   0% + evil--jump-handle-buffer-crossing
          1,056   0% + evil-repeat-post-hook
          1,056   0% + lsp-ui-doc--make-request
          1,056   0% + jit-lock--antiblink-post-command
              0   0%   ...

### Anything else

_No response_

[seagle0128]

Good catch! But I don't understand why flyspell will call flycheck? It seem you are using TUI emacs, right? I didn't observe this issue on GUI.

[CsBigDataHub]

It seem you are using TUI emacs, right?

No GUI

I am trying to find a solution, so far came across -

https://github.com/rolandwalker/flyspell-lazy

https://github.com/redguardtoo/wucuo

[CsBigDataHub]

Notes from https://www.emacswiki.org/emacs/FlyspellLazy

‘flyspell-mode’ has performance issues on some platforms. Specifically, keyboard responsiveness may be significantly degraded on OS X.

[seagle0128]

I suspect it's a conflict between flyspell and flycheck-popup-tip. Can you try "disabling flycheck-popup-tip-mode"?

[CsBigDataHub]

After disabling disabling flycheck-popup-tip-mode

Memory report

    376,795,176  61% - flyspell-post-command-hook
    376,545,272  61%  - flyspell-check-word-p
    221,224,680  35%   - sit-for
    112,992,004  18%    - timer-event-handler
    112,992,004  18%     - apply
     76,879,664  12%      + #<compiled 0x117a71636316d7ef>
     36,102,822   5%      + company-idle-begin
          8,448   0%      + company-echo-show
      5,916,365   0%    + redisplay_internal (C function)
      1,075,217   0%    + #<compiled -0xd1bfa4ba321e947>
        142,576   0%  + flyspell-word
          1,056   0%  + flyspell-check-pre-word-p
    173,575,201  28% - company-post-command
    173,534,713  28%  + company--perform
         23,616   0%  + company-call-frontends
         14,760   0%  + run-with-timer
     24,778,016   4% + timer-event-handler
     19,672,966   3% + redisplay_internal (C function)
     17,853,852   2% + command-execute
      1,568,653   0% + #<compiled -0xd1bfa4ba321e947>
        433,952   0% + symbol-overlay-post-command
         61,344   0% + lsp--post-command
         58,336   0% + winner-save-old-configurations
         53,424   0% + gcmh-register-idle-gc
         52,536   0% + lsp-ui-sideline
         20,064   0% + eldoc-schedule-timer
         14,392   0% + flycheck-maybe-display-error-at-point-soon
         13,648   0% + jit-lock--antiblink-post-command
          6,336   0% + #<compiled 0x1830a891764b1376>
          5,752   0% + eldoc-pre-command-refresh-echo-area
          4,224   0%   prettify-symbols--post-command-hook
          2,112   0% + undo-auto--add-boundary
          1,056   0% + lsp-ui-doc--make-request
          1,056   0% + evil-repeat-post-hook
          1,056   0% + evil-repeat-pre-hook
             80   0% + yas--post-command-handler
              0   0%   ...

cpu report

        2608  44% - flyspell-post-command-hook
        2553  43%  - flyspell-check-word-p
        2409  40%   - sit-for
         705  11%    + timer-event-handler
          84   1%    + redisplay_internal (C function)
           9   0%    + #<compiled -0xd1bfa4ba321e947>
           8   0%     ispell-get-otherchars
           8   0%  + flyspell-check-pre-word-p
           5   0%  + flyspell-word
        1212  20% - command-execute
        1212  20%  - apply
        1211  20%   - ad-Advice-command-execute
        1211  20%    - #<subr command-execute>
        1211  20%     - funcall-interactively
         655  11%      + company-dabbrev-code
         378   6%      + counsel-M-x
          69   1%      + save-buffer
          67   1%      + self-insert-command
          11   0%      + python-indent-dedent-line-backspace
          10   0%      + evil-open-below
           7   0%      + company-complete-selection
           7   0%      + newline
           5   0%      + undo
           1   0%      + company-abort
         613  10% + timer-event-handler
         585   9% + ...
         467   7% + company-post-command
         399   6% + redisplay_internal (C function)
          10   0% + #<compiled -0xd1bfa4ba321e947>
           7   0% + jit-lock--antiblink-post-command
           4   0% + #<compiled 0x1830a891764b1376>
           2   0% + symbol-overlay-post-command
           2   0% + winner-save-old-configurations
           2   0%   auto-compose-chars
           1   0% + evil-repeat-post-hook
           1   0%   global-hl-line-highlight
           1   0%   evil-snipe-mode-check-buffers
           1   0% + eldoc-pre-command-refresh-echo-area
           1   0%   undo-auto--add-boundary
           1   0%   which-key--hide-popup

[CsBigDataHub]

FYI - flycheck/flycheck-popup-tip#11

[seagle0128]

It looks much better after disabling flycheck-popup-tip-mode. Let's wait for the response from upstream.
Disabling flyspell-prog-mode should be a workaround.

[acdoussan]

I've been having somewhat of a similar issue (on Amazon Linux 2, not mac os), but doesn't seem to be related to the tooltips. While I am typing / moving the cursor the buffer will just hang for a second or two (cpu jumps to 100% on a 16 core machine), and then it proceeds to type out all of the text or scroll a bunch if I was holding down the arrow key (super frustrating for obvious reasons).

Have not done a lot of testing but disabling flycheck-mode completely appears to have solved it. For now I've just put (setq global-flycheck-mode nil) in my custom-post.el, would love to know if there is a more elegant solution here though.

Would love to know how you got those stack trace looking things to help me figure this stuff out in the future.

Edit: also seems to happen regardless of the buffer type, I've been primarily working in web-mode on tsx files though