On Don, 2012-11-29 at 10:18 +0100, Thomas Hellstrom wrote: > On 11/28/2012 10:51 PM, Marek Olšák wrote: > > I think the problem with Radeon/TTM is much deeper. Let me demonstrate > > it on the following example. > > > > Unigine Heaven needs about 385MB of space for static resources, that's > > only 75% of my 512MB card. Yet, TTM is not capable of getting all of > > that into VRAM. If I allow GTT placements, I get 20 fps, which is the > > old Mesa behavior. If I force VRAM placements, I get 3 fps, because we > > validate buffers 10 times per frame and there's probably a lot of > > buffer evictions during each validation. > > > > Marek, > Did you look at the total amount of referenced buffers in the ring > including vertex buffers? > > Depending on how hard you throttle, I guess vertex / index buffer data > referenced by the > ring commands may well exceed the VRAM limitation. I think another reason 100% is not possible is fragmentation. Has anyone ever thought about defragmentation? -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Debian, X and DRI developer _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
