[Wayland-bugs] [Bug 763350] GtkRevealer: reveal-child should avoid changing child allocation during animation

[gtk+ (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=763350

--- Comment #9 from Christian Hergert <christian at hergert.me> ---
I'm running weston under X to test this, and it looks like the number of frames
rendered is about half that of the same code on Xorg.

I was curious about the raw memfd costs, so put together an informative test:

  - memfd_create()
  - ftruncate(2*page_size)
  - mmap()
  - page fault all pages
  - munmap()
  - close()

The cost for all of the above is about .06 msec. So not really that bad.
Interestingly, half of the time is spent on close()!

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