Mikhail Pomaznoy <mikpom@mikpom.ru> writes:
Greetings emacs devs, or to whom it may concern!
Hi Mikhail,
I am having troubles with dired listings of remote directories
containing many files and symlinks. When I scroll through such a dired
buffer Emacs lags (over a second) on every page-down scroll.
The problem is easily reproducible with -Q if the directory contains a
hundred files and a hundred symbolic links to some other hundred files
somewhere on the filesystem. If I kill the links in the dired buffer
(without deleting any actual files or links) then everything scrolls
smoothly as usual.
Could you please check if thats a real issue in your setting? ssh
connection I am using is not so slow...
Dired does a lot of work for applying proper faces for the file
status. For symlinked files, for example, it calls file-truename,
file-exists-p, file-directory-p, for every single file in the
listing. Some of them even several times.
This takes time for remote files, especially if you don't use Tramp
caches, or caches with a short timeout.
I recommend you to disable the buffer-local font-lock-mode in a remote
dired buffer with so many symlinked files, via `M-x font-lock-mode'.
Kind regards,
-Mikhail
Best regards, Michael.