https://bugzilla.gnome.org/show_bug.cgi?id=763350
--- Comment #17 from Ray Strode [halfline] <[email protected]> ---
(In reply to Christian Hergert from comment #9)
> 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()!
are you accounting for faulting in the compositor too? if you run,
$ ./test-panel &
$ sysprof-cli -p $! sysprof-output
then open and close the panels like a billion times, then switch back to the
terminal and hit ctrl-c
then run
$ sysprof sysprof-output
what's at the top of your profile ? I see most of the time spent in
sse2_fill/page_fault/shmem_fault, but for me the animations are 60 fps anyway.
I'm curious what your sysprof profile looks like.
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