bug#41200: Displaying a tooltip with x-show-tip gets very slow as more faces are defined

[Clément Pit-Claudel]

On 12/05/2020 02.42, martin rudalics wrote:
>> Is seems that defining a face makes x-show-tip a tiny bit slower, but
>> these effects stack.
> 
> Please try with 'tooltip-reuse-hidden-frame' non-nil (there's nothing we
> can do about a session's first tooltip appearance, though).

I'm not seeing a difference here.  I used this code to test:


(defun my-def-many-faces (nfaces)
  (dotimes (i nfaces)
    (custom-declare-face
     (intern (format "my-face-%d" i))
     '((t)) "A face."
     :group 'basic-faces)))

(defun my-bench-x-tip (nfaces)
  (setq x-gtk-use-system-tooltips nil
        tooltip-reuse-hidden-frame t)
  (my-def-many-faces nfaces)
  (benchmark-run 1 (x-show-tip "Test" (selected-frame) nil 5 nil nil)))