(In reply to Andy Furniss from comment #67)
> In summary AIUI the fact there is a pause causes a spike because the count
> is from the last frame rendered - which is way longer than normal due to the
> pause.

Still, it means that *some* BOs were moved during the pause, so it's not
impossible that the pause is somehow related to the BO moves.

BTW, make sure CONFIG_CMA isn't enabled in your kernels, in particular those
using Ubuntu.

(In reply to smoki from comment #68)
>  Offtopic...

Please don't clutter up bug reports with off-topic comments.