Memory leak when using mouse scroll

[cehteh]

Since quite some i have a memory leak with rustic when using the mouse wheel and scrolling down to the bottom of a rust source file.

CPU usage goes to 100% and memory usage dramatically increases until it hits OOM pretty fast.

This only happens when rustic is enabled, not in any other mode, not in rust-mode either and only when scrolling down with the mouse wheel. Not when hitting the bottom with cursor/pg-down.

I use emacs from debian-stable

$ emacs --version
GNU Emacs 29.4

and use-package/vc-use-package bleeding edge rustic:

(use-package rustic
  :vc (:fetcher github :repo emacs-rustic/rustic)
  :after (rust-mode)
  :demand t
  :init  (setq rust-mode-treesitter-derive t)
  :custom-face
  (my-rustic-self-keyword-face ((t (:inherit font-lock-keyword-face))))
  :hook
  (rustic-mode . (lambda () (font-lock-add-keywords nil '(("\\<self\\>" . 'my-rustic-self-keyword-face))))))

[psibi]

Thanks for the report! Is it possible to add profiling result: https://www.gnu.org/software/emacs/manual/html_node/elisp/Profiling.html ?

[cehteh]

Ah thats getting closer

    434,170,109  77% - redisplay_internal (C function)
    297,845,620  52%  - lsp--update-inlay-hints-scroll-function
    297,845,620  52%   - lsp-update-inlay-hints
    154,020,004  27%    - lsp-request-async
    141,366,708  25%     - lsp--send-request-async
     68,159,224  12%      - lsp--find-workspaces-for
     66,239,576  11%       - -filter
     65,896,376  11%        - #<compiled 0x10372dd4a6892c93>
     64,864,664  11%         - apply
     64,864,664  11%          - lsp--workspace-method-supported?
     64,864,664  11%           - lsp--capability
     64,223,488  11%              lsp--server-capabilities
        641,176   0%              lsp-get
     53,709,196   9%      - seq-do
     53,709,196   9%       - mapc
     51,991,084   9%        - #<compiled 0x9dfd62054309ff0>
     50,608,780   8%         - lsp--send-no-wait
     50,261,356   8%          - lsp-process-send
     50,261,356   8%           - apply
     50,261,356   8%              #<compiled 0x67f24b53ed105e4>
      7,889,808   1%        #<compiled 0xad33ec27456224>
      3,359,808   0%    - lsp-make-range
      2,090,880   0%     - -partition
      2,090,880   0%      - -partition-in-steps
      1,394,976   0%         dash--partition-all-in-steps-reversed
      1,268,928   0%       #<compiled 0x1c5900af126ac0f5>
      3,357,200   0%      lsp-point-to-position
      3,324,176   0%    - lsp-make-inlay-hints-params
      2,064,480   0%     - -partition
      2,064,480   0%      - -partition-in-steps
      1,377,024   0%         dash--partition-all-in-steps-reversed
      1,259,696   0%       #<compiled 0x1c69f963360ac0f5>
    133,282,160  23%  - eval
     50,859,744   9%     if
     23,565,052   4%     mapconcat
      5,516,544   0%     flycheck-mode-line-status-text
      1,377,024   0%     unless
        630,896   0%     concat
      2,772,000   0%  + mode-line-default-help-echo
          6,641   0%  + copilot--on-doc-focus
    120,794,309  21% - #<compiled -0x11fb66ecbc42d1f4>
     42,981,363   7%    apply
     24,164,072   4%  - mapc
     24,164,072   4%   - #<compiled -0x1ea398d7491920fd>
     24,164,072   4%    - lsp--parser-on-message
     24,164,072   4%     - #<compiled 0xaec9a33a82529a5>
     13,325,688   2%      - #<compiled 0x101d4e5f0dcf501e>
     11,951,832   2%       - #<compiled 0xa39d60809212b28>
     11,951,832   2%        - apply
     11,932,994   2%         - #<subr F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_460>
     11,235,280   1%            lsp--remove-overlays
          5,200   0%            lsp--position-to-point
          3,360   0%         - lsp--document-highlight-callback
          2,304   0%            lsp--remove-overlays
          1,056   0%            -map
        344,256   0%         lsp--merge-results
     10,151,984   1%      - lsp--request-cleanup-hooks
     10,151,984   1%       - #<compiled -0x21d56753f1894b>
      3,654,192   0%        - mapc
      3,654,192   0%         - #<compiled -0x1c7be7848410fe18>
         11,616   0%            remove-hook
     10,724,096   1%  - mapcar
      9,089,536   1%     lsp--parse-header
      2,755,920   0%  - #<compiled -0x1c8e48f527b9bf7f>
      2,412,720   0%   - kill-buffer
      2,412,720   0%    - apply
      2,412,720   0%     - ad-Advice-kill-buffer
      1,027,488   0%        #<subr kill-buffer>
      7,067,325   1% + command-execute
        342,800   0% + timer-event-handler
         28,014   0% + flyspell-post-command-hook
         18,288   0% + gcmh-register-idle-gc
         12,584   0% + lsp--post-command
          9,360   0% + flycheck-display-error-at-point-soon
          7,568   0% + copilot--post-command
          1,056   0%   yas--post-command-handler
             72   0% + eldoc-schedule-timer
              0   0%   ...

[cehteh]

Switching lsp-inlay-hints-mode off won't busy-loop/memory leak anymore

[psibi]

I was going to ask you to try that. :-) Can you open an issue in lsp-mode since this seems to be because of it ?

[cehteh]

lsp-update-inlay-hints-on-scroll is the culprit! disabling that fixes my problem. .. i will forward it to lsp-mode

[cehteh]

I was going to ask you to try that. :-) Can you open an issue in lsp-mode since this seems to be because of it ?
Thanks for your help!