>>> "EZ" == Eli Zaretskii <eliz@gnu.org> writes:

   >> From: Uwe Brauer <oub@mat.ucm.es>
   >> Date: Fri, 09 Aug 2019 17:47:03 +0200
   >> 
   >> | Version                                  | init file | without init |
   >> |------------------------------------------+-----------+--------------|
   >> | b06917a4912a60402025286d07d4a195749245c4 | 50 sec    | 1-2 sec      |
   >> | 1d75604eaded6a8482d28d57bc8e6a4d99d5caee | 15 sec    | 1-2 sec      |
   >> 
   >> #+end_src
   >> 
   >> 
   >> Any idea whats up?
   >> 
   >> How can I debug this?

   > Bisect your customizations to see which part takes the lion's share of
   > the time, I'd say.

It was my fault. I bisected different commits (using mercurial)

My configuration script was


./configure CFLAGS='-O0 -g3' --enable-checking='yes,glyphs' --enable-check-lisp-object-type --prefix=/opt/emacs27 --with-x-toolkit=athena --with-mailutils

Which slowed down loading considerably (must have needed that some time
ago)

I switched back to
 ./configure --prefix=/opt/emacs27 --with-x-toolkit=athena --with-mailutils

And everything was back to normal. Sorry.

At least now I know how to modify emacs-repository-version, in order to
include mercurial, but as it seems there is anyhow no mercurial hacker
around needing this.