compiz team mailing list archive

[Nicolás Abel Carbone <nicocarbone@xxxxxxxxx>]

Daniel, I tried your workaround. It appears to work, approximately the
same as disabling sync to vblank, but I am not completely sure.  It is
not easy to measure smoothness. Is there a way to quantify the
smoothness of the animations (something like a fps counter for example)?

However, even if it works as well as disabling sync to vblack, what is
the advantage of your workaround? In CCSM, it has a warning saying that
it will cause "a massive increase in GPU and CPU usage" which is a
problem for me as I am frequently working on battery. Also, disabling
sync to vblank does not appear to have any adverse effects (no tearing
or other visual artifacts). As I said in the bug description, even after
disabling sync to vblank glxgears says it is "running synchronized to
the vertical refresh", so I assume that unity is also synchronized to
the vertical refresh, is this true? If so, what does "disable sync to
vblank" do?

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https://bugs.launchpad.net/bugs/1004251

Title:
  Animations aren't smooth when sync to vblank is enabled

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