Let producer spin by get/release simbuffer lock.  Also, limiy total file size so it stays under 2.0 GB
Let producer spin by get/release simbuffer lock.  Also, limiy total file size so it stays under 2.0 GB

s-kanev/XIOSim,s-kanev/XIOSim,s-kanev/XIOSim,s-kanev/XIOSim