On Wed 08-07-15 09:32:18, Daniel Vetter wrote:
[...]
> Ok that's starting to get nasty. Can you please test what happens when you
> boot with drm.vblankoffdelay=0 and whether drm.vblankoffdelay=1000 has an
> effect on reproduction rate? No debug output needed.

No difference. See the kernel log from both runs attached.
-- 
Michal Hocko
SUSE Labs