bug#67672: EMACS - Slow opening files

[Eli Zaretskii]

> From: Ihor Radchenko <yantar92@posteo.net>
> Cc: Eli Zaretskii <eliz@gnu.org>, "67672@debbugs.gnu.org"
>  <67672@debbugs.gnu.org>, "Chand, Suresh" <schand@cooley.com>
> Date: Tue, 12 Dec 2023 21:56:51 +0000
> 
> "Moore, Rider" <rmoore@cooley.com> writes:
> 
> > Ah, thank you sooo much!!  I think this fixed our issue.
> > Thank you for the instructions as well.  Does it matter where we save the 
> > test.el file?  Once we run M-x load-file we are done with it?
> 
> Do note that removing vc-refresh-state may break some things related to
> version control functionality of Emacs, so what I asked you to do is a
> workaround at best; not a proper fix.
> 
> Eli or people more familiar with vc-hg.el internals might ask more
> questions to narrow down the more precise cause.
> 
> For now, we just determined that `vc-refresh-state' is slow in your setup.

Dmitry, any ideas?

My best idea is to profile vc-refresh-state in those situations, to
see what is slow.  But maybe before that, running from the shell
prompt the hg command that is run by vc-refresh-state would be useful?
Because if hg is very slow with that many files on that type of
volume, there's little Emacs can do?

Can you show that command for the OP to try?