另外，没有报告页面换出。
当进程引用磁盘上的某个页面时，必须将其换入，这可能会导致将其他页面换出。
When a process references a page which is on disk, it must be paged, which could cause other pages to page out again.
在大多数情况下，并不希望换出工作段，因为这样做会导致系统进行不必要的页面换出，会降低性能。
In most cases, you do not want to page working segments, as doing so causes your system to page unnecessarily and decrease performance.
AME压缩内存中的数据，这样就可以在内存中保存更多的数据，还可以减少在装载数据时换出到磁盘的页面数量。
AME compresses data within memory, allowing you to store keep more data in memory, and reduce the amount of page swapping to disk as data is loaded.
最重要的更改是处理分页问题，即使系统拥有足够的空闲内存，数据库服务器频繁地交换出计算性页面也可能导致这个问题。
The most important changes were made to address paging issues, where database servers frequently page out computational pages, even though the system has enough free memory.
如果某个行的大小大于页大小(即大于2KB)，那么包含该行的页面可能被置换出内存。
If a row is larger than a page (that is larger than 2 KB), then the page containing that row might be kicked out of memory.
这是因为内核驱动程序需要访问这些内存，在此期间这些页面不能交换出去。
They need to be locked because the memory will be accessed by kernel-mode drivers and cannot be paged out for the duration of the access.
毕竟，您不想让4MB的块换出页面！
“po”字段告诉我们当前内存中有多少页面被换出。
The "Po" field tells us how many pages in the memory are currently paged out.
键值列是pi/po（换进/换出的页面），这表示了对多少页面进行了交换。
The key columns are the pi/po (page in/page out), which indicate how many pages have been exchanged.
vmstat工具输出线程/进程信息、内存/交换区使用率、换进/换出页面、磁盘I/O、页面错误和CPU统计信息。
The vmstat tool outputs thread/process information, memory/swap usage, page ins/outs, disk I/O, page faults, and CPU statistics.
po—换出到分页空间的页面数。
如何知道哪些页面的内核，在虚拟地址空间对应于一个换出的物理页帧？
How does kernel know, which pages in the virtual address space correspond to a swapped out physical page frame?
此数并不一定代表页面文件的使用量，因为它包含了物理内存中从未被换出过的私有提交页面。
This number doesn't necessarily represent page file usage because it includes private committed pages in physical memory that have never been paged out.
此数并不一定代表页面文件的使用量，因为它包含了物理内存中从未被换出过的私有提交页面。
This number doesn't necessarily represent page file usage because it includes private committed pages in physical memory that have never been paged out.
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