How to find the bottleneck on slow export?

[RidaAyed]

The blog section and it's post subtrees reside on top of my ~50k lines org file.
Exporting any post requires ~5-10min (100% cpu).

Deleting anything below the blog section solves the problem.

Any ideas on finding the cause?

Possibly related to #487

System Info 💻

• OS: gnu/linux
• Emacs: 28.2
• Org mode version: 9.6.7
• Spacemacs: 0.999.0
• Spacemacs branch: develop (rev. ca10effc9)
• Graphic display: t
• Running in daemon: t
• Distribution: spacemacs
• Editing style: vim
• Completion: helm

extract init.el

dotspacemacs-configuration-layers
...
(org :variables
org-enable-hugo-support t
)
...

And of course...Thank you so much for this invaluable tool ❤️

Debug information for ox-hugo

Emacs Version

GNU Emacs 28.2 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.36, cairo version 1.17.6)
 of 2023-01-03

Org Version

Org mode version 9.6.7 ( @ /home/ra/.emacs.default/elpa/28.2/develop/org-9.6.7/)

Hugo Version

hugo v0.112.3+extended linux/amd64 BuildDate=unknown

Org load-path shadows

Warning: Possible mixed installation of Org

/home/ra/.emacs.default/elpa/28.2/develop/org-9.6.7/org-keys hides /usr/share/emacs/28.2/lisp/org/org-keys
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/home/ra/.emacs.default/elpa/28.2/develop/org-9.6.7/ox-html hides /usr/share/emacs/28.2/lisp/org/ox-html
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/home/ra/.emacs.default/elpa/28.2/develop/org-9.6.7/ox-publish hides /usr/share/emacs/28.2/lisp/org/ox-publish
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Study the output of M-x list-load-path-shadows.

ox-hugo defcustoms

org-hugo-section	"posts"
org-hugo-use-code-for-kbd	nil
org-hugo-preserve-filling	t
org-hugo-delete-trailing-ws	t
org-hugo-prefer-hyphen-in-tags	t
org-hugo-allow-spaces-in-tags	t
org-hugo-tag-processing-functions	(org-hugo–tag-processing-fn-replace-with-spaces-maybe org-hugo–tag-processing-fn-replace-with-hyphens-maybe)
org-hugo-auto-set-lastmod	nil
org-hugo-export-with-toc	nil
org-hugo-export-with-section-numbers	nil
org-hugo-front-matter-format	"toml"
org-hugo-default-static-subdirectory-for-externals	"ox-hugo"
org-hugo-external-file-extensions-allowed-for-copying	("jpg" "jpeg" "tiff" "png" "svg" "gif" "mp4" "pdf" "odt" "doc" "ppt" "xls" "docx" "pptx" "xlsx")
org-hugo-date-format	"%Y-%m-%dT%T%z"
org-hugo-paired-shortcodes	""
org-hugo-suppress-lastmod-period	0.0
org-hugo-front-matter-format	"toml"