内存分页

Furthermore, in order to solve the shortage of memory capacity, paging memory management leads to the virtual memory support, in order to logically expand memory capacity.

另外，为了解决内存容量的不足问题，分页存储管理便引入了虚拟存储器的支持，以便于从逻辑上扩充内存容量。

The data structures that map linear to physical addresses are called page tables ; they are stored in main memory and must be properly initialized by the kernel before enabling the paging unit.

描述线性地址到物理地址映射关系的数据结构叫做页表，存储在主内存中并且在使用分页机制前需要由内核对其进行初始化。

The other reason would be to map the memory to be non-paged so the driver can also read it at raised IRQL levels.

另外一个原因是映射内存到未分页的页面中，以便于驱动也能够在被提升的IRQL等级中读取。

System can detect the number of page memory and non-memory allocation tabs.

可以检测系统中有多少分页内存和非分页内存可分配。

The contents of the course include: what operating system are, what they do, how they are designed, and where they came from; a general history and explanations of computer system, and some discussion on hardware and the relation between operating system and other software; concept of process, process states and process control block, process queue, management of processes; concepts of sequent programming and parallel programming, process synchronization and its application, process communication; scheduling level and job state transition, job scheduling, process scheduling, and methods for scheduling; deadlock and its necessary conditions, deadlock prevention, control and recovery of deadlock; fixed partition, multiple partition and replacement partition memory management, swapping and overlays; page, segmentation and segmentation with paging storage management, basic concept of virtual memory management, and page, segmentation and segmentation with paging memory management.

课程的内容包括：计算机系统概述、操作系统的形成、发展、功能、特性、类型和发展趋势；操作系统的硬件环境、操作系统与其它系统软件的关系；进程的概念、进程的状态和进程控制块、进程队列、进程的管理；顺序程序设计和并行程序设计概念、进程间的同步与互斥、同步机构应用、进程间通信；调度的层次和作业状态转换，作业的调度、进程调度、调度算法；死锁问题的提出、死锁的必要条件、死锁的预防、避免、控制和恢复；固定分区、可复分区、多重分区内存管理技术以及覆盖技术和交换技术；分页域、分段域、段页域存储管理技术、虚拟存储管理的基本概念、分页域、分段域、段页域虚拟存储管理。

Pagination : The basic idea of the memory space divided by a fixed block size of these pieces as physical block.

分页技术的基本思想：将内存的空间按某个固定大小的块进行划分，这些块称为物理块。

To imagine such a situation, when you more than the amount of memory, and run a relatively large-scale process, will inevitably lead to a sharp reduction in the number of physical memory, and in this case the so-called "optimization software," the beginning of smart aleck, the data memory for paging to the hard drive, and the procedures needed for the operation of the data, which may have led to at the same time, the "optimization of software" tried to data paging to the hard disk, and the operating system attempts to read data from the hard disk into memory, a very large increase in hard drive read and write.

想象这种情况，当你内存数量不多，而又运行了比较大型的程序后，必然导致物理内存数急剧减少，而在这种情况下所谓的"优化软件"开始自作聪明，把占用内存的数据往硬盘上进行分页，而程序的运行需要这些数据，这可能导致了在同一时间内，"优化软件"试图将数据分页到硬盘，而操作系统试图将数据从硬盘读取到内存，极大增加了硬盘的读写。

Another division, which is almost but not quite coextensive with the first, is between paged and nonpaged memory.

另一个划分方法，几乎但不是完全扩展于第一个，介于分页和不分页的内存。

When memory is locked, it cannot be paged out of physical memory.

当记忆被锁定，不能分页的物理内存。

The system-allocated virtual memory that has been charged to a process and that can be paged.

该系统分配的虚拟内存，已被控一个过程，可以分页。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失