Tricks to running many threads:
	* On 32-bit platforms, by default you are limited to 32K PIDs.
          To increase, modify PID_MAX_LIMIT in $KERNEL/include/linux.threads.h
          I set mine to 1M (1024 * 1024).
          On 64-bit platforms, it defaults to 4M, so this should be safe.
	* With this limit removed, increase the runtime PID limit:
		# echo 100000 >/proc/sys/kernel/pid_max	
		# cat /proc/sys/kernel/pid_max	
		100000
	* And the thread limit:
		# echo 100000 >/proc/sys/kernel/threads-max
		# cat /proc/sys/kernel/threads-max	
		100000
	* And the map limit:
		# echo 200000 >/proc/sys/vm/max_map_count
		# cat /proc/sys/vm/max_map_count
		200000