the real number system

As the system adds more pages into real memory, the number of empty locations in real memory that can contain pages decreases.

随着系统将更多的分页添加到实际内存中，实际内存中空闲位置(可以包含分页)的数目将会减少。

The number of non-computational pages is referred to as numperm: The vmstat –v command displays the numperm value for a system as a percentage of a system’s real memory.

非计算性分页的数目称为 numperm：vmstat –v 命令可以显示系统的 numperm 值所占系统实际内存的百分比。

Reorganize the operating system as a tiny microkernel that runs in kernel mode, along with some number of user processes that do the real work of the operating system.

将操作系统的结构重新组织为一个运行于内核态的微内核，外加若干用户进程去完成真正的操作系统任务。