Hi,

I'm using Emacs 25.1 compiled with MinGW64 and I got this profiling report:

- timer-event-handler                                            9168  52%
 - apply                                                         9096  51%
  - auto-revert-buffers                                          7391  41%
   - auto-revert-handler                                         7198  40%
      buffer-stale--default-function                             7083  40%
      file-remote-p                                                78   0%
  + savehist-autosave                                             321   1%
  + company-idle-begin                                            111   0%
  + flycheck-handle-idle-change                                    16   0%
  + desktop-auto-save                                              13   0%
  + sp-show--pair-function                                         12   0%
  + org-element--cache-sync                                         9   0%
    beacon--dec                                                     8   0%
  + which-func-update                                               1   0%
 + timer-inc-time                                                  28   0%
 + timer-activate                                                  14   0%
   timer-until                                                      8   0%
   cancel-timer-internal                                            3   0%
   timerp                                                           1   0%
+ command-execute                                                4508  25%
+ flyspell-post-command-hook                                     2798  15%
+ ...                                                             929   5%
+ redisplay_internal (C function)                                 125   0%
+ beacon--post-command                                             20   0%
+ global-hl-line-highlight                                         17   0%
+ sp--save-pre-command-state                                       16   0%
+ delete-selection-pre-hook                                        12   0%
  global-hl-line-unhighlight                                        9   0%
+ company-post-command                                              4   0%
+ projectile-global-mode-check-buffers                              2   0%
+ prelude-global-mode-check-buffers                                 1   0%
+ which-key--hide-popup                                             1   0%
+ flycheck-perform-deferred-syntax-check                            1   0%
  sml/generate-position-help                                        1   0%
+ winner-save-old-configurations                                    1   0%

The buffer-stale--default-function worries me: how could it use so much
time ?
Moreover, it is an elisp function, so why the profiler doesn't report about
the
inner functions?

Thanks for any clue,

Fabrice