[Bug 119631] RadeonSI get a huge performance dip with used with the nine state tracker

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=119631

--- Comment #12 from Axel Davy <vebveb at hotmail.fr> ---
thread_submit delays submission of buffers to the X server until the moment the
buffer has all rendering finished.

This is useful for DRI PRIME, because the kernel doesn't have yet all the
pieces to have the other card wait for the rendering.
I thought perhaps in your case the issue was that the async flip was taking too
long because it needed to wait for the rendering to finish, but apparently not.

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