swap memory

基本解释

Caution: Requires large amount of memory and swap memory.
注意：需要大量的内存和交换分区。
The command displays the total amount of free, used physical, and swap memory in the system, as well as the buffers used by the kernel.
该命令显示系统中的空闲内存、已使用的物理内存和交换内存的总量，以及内核所使用的缓冲区。
The display changes when you swap memory pages so you need not copy an Image object from program memory to video memory; you merely change video pointers and the display changes.
当交换内存页时显示就发生更改，所以您不需要将 Image 对象从程序内存复制到显示内存；您只要更改视频指针，显示就会发生更改。

You actually need to kind of do this and then you can swap these two numbers but it requires 50 percent more memory.
你实际上需要这样做,然后才能交换两个数字,但是它需要多50%的内存。
哈佛公开课 - 计算机科学课程节选
So when I said earlier that as soon as swap returns, all of the memory allocated for swap is now useless.
我前面指明的，一旦swap返回，所有为swap分配的内存都是无用的了。
哈佛公开课 - 计算机科学课程节选
But the moment swap returns, the moment we hit this bottom most curly brace, what conceptually happens in memory?
但是swap返回时，当我们抵达花括号底端是，在内存中发生了什么？
哈佛公开课 - 计算机科学课程节选

While it should be possible to swap out the memory card on the new iTunes phone for one with more capacity, the person who has seen the handset says the phone's software appears to artificially cap song storage at 25 songs, regardless of how much memory the phone has.
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