The minimum available resident (not swappable) memory to maintain in order to avoid deadlock. Used to reserve a portion of memory for use by the core of the operating system. Pages restricted in this way are not seen when the OS determines the maximum amount of memory available.
1 to physical memory
None. Large values result in wasted physical memory.
The default value is generally adequate. Consider increasing it if the system locks up and debugging information indicates the problem was because no memory was available.