理解Computer中memory management

• Memory management

  wikipedia

  In operating systems, memory management is the function responsible for managing the computer’s primary memory.

  上面这句话很有意思，首先内存管理（memory management）是操作系统概念，其次管理的是内存（memory），只有directly accessible by the CPU 的才是内存（memory），即RAM、cache、resigter这三项。而这三项，正是Hierarchy of the computer storage 中primary storage。

  The memory management function keeps track of the status of each memory location, either allocated or free. It determines how memory is allocated among competing processes, deciding which gets memory, when they receive it, and how much they are allowed. When memory is allocated it determines which memory