https://bugs.freedesktop.org/show_bug.cgi?id=84662
--- Comment #47 from Andy Furniss adf.lists@gmail.com --- (In reply to Michel Dänzer from comment #46)
(In reply to Andy Furniss from comment #44)
If I stop it after a while I can get the first bit cached (ie. I can run it without vmstat 1 showing anything), but it's still stuttery in the places where it would be loading from disk were it first run.
Sounds like it's loading new content in those places. Doesn't that cause stutter with other drivers?
Hard for me to test fglrx on my setup, but soon I should have more ram to play with.
The recent changes to to agd5f 3.19-wip seem to have provoked a new issue - haven't had time to find a commit yet.
Will attach a screen showing that near the end of the demo there is a new really long pause (graph doesn't really show length, but it was around 10 sec) that corresponds to a big move from vram to gtt.
Other demos eg. valley don't show any issues and run well.
IIRC there is already a bug somewhere about the rendering issue (common to most unreal demos) that makes part of the logo black in the screen shot.