# HG changeset patch
# User Oleksandr Gavenko <gavenkoa@gmail.com>
# Date 1609612649 -7200
# Node ID 32e95bb034b6a6f5c756f4b2a2abfda3e83176aa
# Parent  c3e2faa4f1184d8c0f49d59c74933998a4209a3c
Disable population of `file-name-history', it causes calls to
  abbreviate-file-name => file-name-case-insensitive-p => tramp-autoload-file-name-handler
taking 40% of startup time.
`ido-switch-buffer' doesn't depends on `file-name-history', nothing to lose.

Profiling data for startup:

- eval-buffer                                         4340  99%
 - recentf-mode                                       1684  38%
  - recentf-load-list                                 1684  38%
   - mapcar                                           1684  38%
    - abbreviate-file-name                            1684  38%
     - file-name-case-insensitive-p                   1250  28%
      + tramp-autoload-file-name-handler               1172  26%
      + tramp-file-name-handler                         78   1%

diff -r c3e2faa4f118 -r 32e95bb034b6 .emacs-my
--- a/.emacs-my	Sat Jan 02 20:09:51 2021 +0200
+++ b/.emacs-my	Sat Jan 02 20:37:29 2021 +0200
@@ -61,6 +61,11 @@
 ;; Need to be defined before loading "recentf" because default value is
 ;; "mode", meaning cleanup when turning the mode on.
 (setq recentf-auto-cleanup 600)
+;; Disable population of `file-name-history', it causes calls to
+;;   abbreviate-file-name => file-name-case-insensitive-p => tramp-autoload-file-name-handler
+;; taking 41% of startup time.
+;; `ido-switch-buffer' doesn't depends on `file-name-history', nothing to lose.
+(setq recentf-initialize-file-name-history nil)
 
 (recentf-mode 1)