(In reply to Andy Furniss from comment #18)
> So after last update I ran valley again briefly and saw a few vmfaults, then
> a longer run and got thousands again.
> 
> without touching anything else did echo mem >/sys/power/state and then woke
> up.
> 
> 10 minute run of valley has produced zero faults.

Further test from power off, nothing else running apart from X/fluxox short run
of valley no faults. Reran valley for a bit longer and got thousands. Did
memsleep ran valley no faults but after about 10 minutes it hung.