Slow opening of tex files

tigerjack commented 2 months ago

Description :octocat:

Opening any tex files takes seconds.

Reproduction guide :beetle:

To debug the issue

Start Emacs
toggle-debug-on-quit
Open/Create a .tex file
After a few seconds, press C-g
Observe the debug output

Observed behaviour: :eyes: :broken_heart: Opening any tex files takes seconds.

Expected behaviour: :heart: :smile: Opening any tex files takes way less.

System Info :computer:

OS: gnu/linux
Emacs: 29.3
Spacemacs: 0.999.0
Spacemacs branch: develop (rev. a58a7d79b)
Graphic display: nil
Running in daemon: t
Distribution: spacemacs
Editing style: vim
Completion: helm

Layers:

(csv tigerjack javascript html ruby git
 (version-control :variables version-control-diff-side 'left version-control-diff-tool 'diff-hl)
 dap lsp rust emacs-lisp common-lisp
 (c-c++ :variables c-c++-backend 'lsp-ccls c-c++-lsp-enable-semantic-highlight 'rainbow c++-enable-organize-includes-on-save t c-c++-adopt-subprojects t c-c++-enable-clang-support t c-c++-enable-clang-format-on-save t c-c++-enable-rtags-support t c-c++-default-mode-for-headers 'c++-mode)
 (python :variables python-backend 'lsp python-lsp-server 'pyright python-formatter 'black python-pipenv-activate t python-fill-column 79)
 ipython-notebook yaml themes-megapack asciidoc
 (helm :variables helm-enable-auto-resize t)
 (multiple-cursors :variables multiple-cursors-backend 'evil-mc)
 (auto-completion :variables auto-completion-enable-help-tooltip t auto-completion-enable-snippets-in-popup t auto-completion-return-key-behavior 'complete auto-completion-tab-key-behavior 'cycle auto-completion-complete-with-key-sequence-delay 0 auto-completion-enable-sort-by-usage t auto-completion-enable-help-tooltip 'manual auto-completion-enable-snippets-in-popup t auto-completion-private-snippets-directory nil)
 (syntax-checking :variables syntax-checking-enable-by-default nil syntax-checking-enable-tooltips nil)
 (languagetool :variables languagetool-show-error-on-jump t langtool-default-language "en-GB" langtool-java-classpath "/usr/share/languagetool:/usr/share/java/languagetool/*")
 better-defaults markdown ranger themes-megapack
 (org :variables org-projectile-file "TODOs.org" org-enable-roam-support t org-roam-directory "/mnt/internal/SharedData/Documents/org-roam" org-roam-v2-ack t org-roam-v2-ack t org-enable-roam-ui t org-enable-org-brain-support t)
 gtags
 (shell :variables shell-default-height 30 shell-default-position 'bottom shell-default-term-shell "/bin/bash" multi-term-program "/bin/bash")
 (latex :variables latex-backend 'company-auctex latex-enable-auto-fill t latex-enable-folding t)
 (bibtex)
 deft
 (spell-checking :variables spell-checking-enable-by-default nil))

System configuration features: ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG JSON LCMS2 LIBOTF LIBSYSTEMD LIBXML2 M17N_FLT MODULES NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER WEBP X11 XDBE XIM XINPUT2 XPM GTK3 ZLIB

Backtrace :paw_prints:

Debugger entered--Lisp error: (quit)
  require(evil-embrace nil t)
  evil-tex-mode()
  run-hooks(change-major-mode-after-body-hook text-mode-hook TeX-mode-hook LaTeX-mode-hook)
  apply(run-hooks (change-major-mode-after-body-hook text-mode-hook TeX-mode-hook LaTeX-mode-hook))
  run-mode-hooks(LaTeX-mode-hook)
  LaTeX-mode()
  set-auto-mode-0(latex-mode t)
  #f(compiled-function (var val) "Set local variable VAR with value VAL.\nIf VAR is `mode', call `VAL-mode' as a function unless it's\nalready the major mode." #<bytecode -0xc0cd9b4aaa588c1>)(mode LaTeX)
  apply(#f(compiled-function (var val) "Set local variable VAR with value VAL.\nIf VAR is `mode', call `VAL-mode' as a function unless it's\nalready the major mode." #<bytecode -0xc0cd9b4aaa588c1>) (mode LaTeX))
  hack-one-local-variable(mode LaTeX)
  hack-local-variables-apply()
  hack-local-variables(no-mode)
  run-mode-hooks(LaTeX-mode-hook)
  LaTeX-mode()
  set-auto-mode-0(latex-mode t)
  #f(compiled-function (var val) "Set local variable VAR with value VAL.\nIf VAR is `mode', call `VAL-mode' as a function unless it's\nalready the major mode." #<bytecode -0xc0cd9b4aaa588c1>)(mode LaTeX)
  apply(#f(compiled-function (var val) "Set local variable VAR with value VAL.\nIf VAR is `mode', call `VAL-mode' as a function unless it's\nalready the major mode." #<bytecode -0xc0cd9b4aaa588c1>) (mode LaTeX))
  hack-one-local-variable(mode LaTeX)
  hack-local-variables-apply()
  hack-local-variables(no-mode)

arifer612 commented 2 months ago

It might be helpful to run a profiler to check what's going on under the hood. My LaTeX files are humongous an even despite using LSP as the backend, it takes about a second (two tops) to load them all up.

tigerjack commented 2 months ago

@arifer612

Here is the CPU profiling, which shows a 70% of CPU time spent on evil-tex-mode cpu_profile.txt

arifer612 commented 2 months ago

Yep, 70% just for evil-tex-mode is quite significant. Unfortunately, I am not able to reproduce this issue with my setup, nor on a fresh setup with the most basic configurations. It might just be an unexpected issue or perhaps something amongst your currently installed packages are interfering with it. I would suggest upgrading all your packages first to see if there's improvement, and if there isn't then to delete the contents of ~/emacs.d/elpa/29.3 to force Emacs to re-download all the packages again.

tigerjack commented 2 months ago

@arifer612 thanks for your help. After further investigation, I discovered that the issue was due to the following (now commented) line in .dir-locals.el, probably firing a recursive activation of function calls.

((latex-mode
  ;; (mode . latex )
))

I don't why it got there first of all, or if it was used before the recent auctex upgrade.

arifer612 commented 2 months ago

You're welcome! On another note, that's quite a nasty recursive hell you ended up in :rofl:, good thing you caught that. Hope your TeX experience on Emacs/Spacemacs goes smooth from now on!

tigerjack commented 2 months ago

You're welcome! On another note, that's quite a nasty recursive hell you ended up in 🤣, good thing you caught that. Hope your TeX experience on Emacs/Spacemacs goes smooth from now on!

It's incredible how fast a file is opening now XD for the last month or so, I got used to incredible amount of delays!

syl20bnr / spacemacs