Sebastian Wålinder <s.walin...@gmail.com> writes: > I write regularly in a massive org file ~160 000 lines, and experience > progressive slowdowns as the buffer remains open when I have the setting > `(setq org-fold-core-style 'text-properties)`. > > When the file is first opened, all operations are very fast. But as I keep > using, it keeps slowing down and eventually slows to a crawl where typing a > single character takes several seconds. However, after closing the buffer and > opening the file up again, the speed returns to normal. > > With `(setq org-fold-core-style 'overlays)` in my `early-init.el`, I have no > slowdown issue related to org-fold over time. > ... > The memory profiler reports nothing significant. It appears > `org-fold-core--fix-folded-region` is what's taking all the cycles. What's > the best way for me to proceed debugging this?
Try the latest bugfix branch. I recently pushed an optimization in this area: https://git.savannah.gnu.org/cgit/emacs/org-mode.git/commit/?h=bugfix&id=7b3b7b92e784c86c4ada1150d6e17a510b5ea3d0 -- Ihor Radchenko // yantar92, Org mode contributor, Learn more about Org mode at <https://orgmode.org/>. Support Org development at <https://liberapay.com/org-mode>, or support my work at <https://liberapay.com/yantar92>
