https://bugs.freedesktop.org/show_bug.cgi?id=84662
--- Comment #46 from Michel Dänzer michel@daenzer.net --- (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?