The amount of memory available in the system and the way it is organized
determines oftentimes the way programs can and have to work. For
functions like mmap it is necessary to know about the size of
individual memory pages and knowing how much memory is available enables
a program to select appropriate sizes for, say, caches. Before we get
into these details a few words about memory subsystems in traditional
Unix systems will be given.
Memory Subsystem: Overview about traditional Unix memory handling.
