compiz team mailing list archive

[Daniel van Vugt <daniel.van.vugt@xxxxxxxxxxxxx>]

Nicolás,

Yes, there is an FPS counter in the Benchmark plugin, which is part of package: compiz-plugins-extra
Just install that package. Though you might need to change the key combination for it (ccsm) before you can get it to appear.

The advantage of the workaround is that it uses a different rendering
method, which is able to "offload" the waiting for vsync from the CPU to
the GPU. That allows the CPU to prepare new frames faster and hand them
over to the GPU early, held until it's time to show them on the monitor.

If disabling sync to vblank makes no visible difference for you then
that usually means your driver has a setting forcing it on or off
regardless of the application/compiz settings. This is common and all
drivers are different unfortunately, with different defaults.

Sync-to-vblank is different between apps (glxgears), the compositor
(compiz) and the graphics driver. At every stage, the lower level is
allowed to virtualize the vblank event so the next level up still thinks
it's happening even if it's not. Thus applications like glxgears might
think that they are syncing to vblank, but they actually won't unless
it's enabled in the next level down (compiz), and the level below that
(the driver).

-- 
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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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