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。
For performance reasons or when diagnosing a problem that you suspect might be swap space related, you often need a more interactive view of the memory and paging usage.
出于性能的考虑，或者在诊断您怀疑可能与交换空间有关的问题时，您通常需要内存和分页使用情况的更加交互式的视图。
As in Figure 10, you can get similar information and memory, swap, disk usage, and measurements over different time periods.
如图10所示，您可以获得不同时间段内关于内存、交换、磁盘使用和度量的类似信息。
Some only use swap space when the physical memory has already been used.
有些变体仅在已经使用完物理内存时才使用交换空间。
Releasing space allows the underlying operating system to cut down on swap space requirements and reuse memory mapping tables.
释放空间使底层操作系统减小对交换空间的许求并且重用内存映射表。
Memory usage in this workload is primarily attributable to file I/O, not anonymous memory, and very little swap activity is observed.
此工作负载中的内存利用主要是由文件I/O 引起，而不是匿名内存，几乎没观察到交换活动。
The system is able to fit everything into physical memory without having to resort to slow, disk-based swap space.
系统现在可以全部装入物理内存，而不必借助慢速的基于磁盘的交换空间。
You've also seen how you can permanently add swap to your configuration and how to add swap in an emergency when you run out of memory.
您还看到了如何向您的配置永久地添加交换空间，以及如何在内存不足时紧急添加交换空间。
A large swap space is also advisable for a system with very small memory.
建议为内存极小的系统使用较大的交换空间。
Paging space, or swap space, is a type of logical volume that serves as a staging area for processes that are not using active random-access memory (RAM).
分页空间（或交换空间）是一种逻辑卷，用来存储不使用随机存取存储器（RAM）进程的临时区域。
If you know you have enough memory to handle your workload, you are better off delaying these two swap activities.
如果您知道内存足以处理工作负载，最好推迟这两种交换活动。
Some keep a copy of the data in all applications — both memory and swap space.
有些变体保留所有应用程序中的数据副本——同时包括内存和交换空间中的应用程序。
On SLES 8, only 2 GB used for central memory because of the 31-bit operating system, and 2 GB expanded memory used for swap space.
在SLES8 上，只有2GB 的内存用作中央内存，因为这是一个 31 位的操作系统，有 2 GB 的扩展内存用作交换空间。
Answer: If you want your applications to perform, the application server instance's JVM should not swap out of physical memory.
答：如果希望应用程序正常执行，则不应该将应用服务器实例的jvm换出物理内存中。
Dreams, memory and reality swap places, all leavened with dry humour.
梦境、回忆和现实交错了空间，又用冷幽默来平衡。
Now applications have used 143mb of physical memory, with the rest of being used for buffers; in addition, the system now needs to make use of 18mb of swap.
现在应用程序使用了143MB的物理内存，其余的内存均被缓冲区占用；另外，系统现在使用了18 MB的交换空间。
The OS can move data held in physical memory to and from a swap area when it isn't being used, to make the best use of physical memory.
操作系统可以将物理内存中的数据移动到未使用的交换区，以便于最充分地利用物理内存。
With current memory prices, swap space represents a very slow secondary memory.
考虑到目前内存的价格，交换空间是一种非常缓慢的辅助存储器。
For example, let's say that one area of memory is currently in swap space while another one is in memory.
例如，假设一个内存区当前在交换空间中，而另一个在内存中。
Of course, you can also control the queuing behavior of ZeroMQ sockets by setting an allowed memory bound and even a swap size for each socket.
当然，你也可以控制ZeroMQ的排队行为，只需要设定内存范围即可，甚至你还可以为每个套接字设定交换区域。
Psyco has a large memory overhead which might even negate any gains if the machine has to go to swap.
Psyco 需要很大的内存开销，如果机器进入交换，它甚至会抵销 Python 获得的任何性能。
Figure 4 compares swap activity between a Memknobs run with memory ballooning and a run without.
图4比较了Memknobs在内存膨胀情况下和没有的情况下运行的交换活动。
The vmstat command provides a long-term view of virtual usage, including providing information on the amount of memory being actively swapped between swap space and RAM.
vmstat命令可以提供虚拟内存使用情况的长期视图，包括提供有关交换空间与RAM之间正在活动地交换的内存量的信息。
Tmpfs also makes use of the disk swap space for storage, and of the virtual memory (VM) subsystem when requesting pages for storing files.
tmpfs还使用磁盘交换空间来存储，并且当为存储文件而请求页面时，使用虚拟内存(VM)子系统。
The top two also set the RESIDENT parameter to -1, which tells Linux to keep all the Informix memory segments in memory and not swap them to disk.
前两个条目还将RESIDENT参数设置为- 1，这告诉Linux将所有Informix内存碎片保留在内存中，不要将它们交换到磁盘。
While the job will no longer run in parallel, or use multiple CPUs, it will use less memory and run faster because the InfoSphere DataStage server no longer has to swap.
然而，任务再无法并行运行，或使用多个CPU，它会使用更少的内存，并会运行得更快，因为InfoSphereDataStage服务器不需要再进行内存交换。
The vmstat tool outputs thread/process information, memory/swap usage, page ins/outs, disk I/O, page faults, and CPU statistics.
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。
If you have plenty of memory, you can skimp on it, although some distributions of Linux have a problem going into standby or hibernating without much swap.
如果你的内存足够大，甚至可以不用swap分区。但是有些Linux发行版在待机和休眠时会因此出现问题。
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