Xinerama infrastructure

[Egbert Eich]

Roland Mainz writes:
 > Benjamin Herrenschmidt wrote:
 > > > (to be fair, on certain cards, in my specific case the matrix g400,
 > > > xinerama is indeed as slow as molasses, for as yet unknown reasons -
 > > > although it's nice to know that it's tied only to certain cards, and
 > > > not the entire universe :)
 > > 
 > > I suspect the biggest reason is that by having 2 outputs, you
 > > double the load on the card's bus, thus slowing down everything
 > 
 > ... and I guess the rendering is done sequencial and not in parallel...
 > ;-(
 > 

Right. But even if it was possible to parallelize things it wouldn't
help you with just a single engine.

Egbert.