[Wayland-bugs] [Bug 763350] drawing performance worse than X

[gtk+ (GNOME Bugzilla)]

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

--- Comment #33 from Ray Strode [halfline] <rstrode at redhat.com> ---
Okay so with those sysprof profiles, most of the time is spent drawing (for
both weston and mutter): gtk_widget_draw_internal and libpixman (though that's
missing debug symbols, but it's probably drawing related), which is what you'd
expect during an animation I guess.  So if we're not hitting the framerate we
want, then assuming drawing takes less time than a frame (which is a reasonable
assumption since it's fluid on weston and the drawing isn't different there),
we must not be drawing frequently enough.  I think these profiles suggest,
indeed, the timings are wonky.

Can you instrument maybe_start_idle in gdkframeclockidle to print out what
min_interval  it's using for mutter versus weston ?

Does your version of mutter have this commit, by the way?
https://git.gnome.org/browse/mutter/commit/?id=50099c4c10c9311c6d0deb978d21637c9437c027

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