Once the working set exceeds available RAM, performance usually declines sharply as the operating system starts paging memory out to disk.
一旦处理空间超过了可用的RAM，操作系统将页面调度到磁盘，性能通常会急剧下降。
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。
Paging can occur when there is insufficient system memory to support the chosen heap size along with the other processes running on the system.
当系统内存不足以支持所选择的堆大小和系统中正在运行的其他进程时，将出现分页情况。
Paging a memory block out and back in from disk is significantly slower than accessing it directly from RAM, so you should generally avoid this practice.
与直接访问RAM中的内存块相比，把内存块交换到磁盘并交换回来要慢得多，所以一般情况下应该避免这种做法。
Look for excessive CPU utilization and memory paging or swapping — these are performance killers.
注意过高的CPU利用率和内存分页或交换——这些都是性能杀手。
It provides a lot of information, including real, virtual, and paging space memory used.
它提供许多信息，包括所使用的实际、虚拟和分页空间内存。
If paging space use is high, check to see if there is enough memory allocated for the workload.
如果分页空间使用率高，那么应查看是否为工作负载分配了足够的内存。
AIX treats large pages as pinned memory and does not provide paging support for large pages.
AIX把大页面当作固定内存对待，对于大页面不提供分页支持。
This section describes recommendations for system performance, including memory and paging, disk configuration, and connectors.
本小节提供调优系统性能的建议，包括内存和分页、磁盘配置以及连接器。
It also logs paging space in and outs, file page in and outs, candidate memory and memory references.
此外它还会记录分页空间的进出情况、文件页面的进出情况、候选内存和内存引用。
When creating or updating Shared memory partitions profiles you can find the option to select the paging VIOS partitions in the memory configuration section.
在创建或更新共享内存分区概要文件时，可以在内存配置部分中找到选择分页VIOS分区的选项。
This paging algorithm determines which virtual memory pages currently in ram ultimately have their page frames brought back to the free list.
这种分页算法可以确定对当前位于RAM中的哪些虚拟内存页面的页帧进行回收，并放回到空闲列表中。
It then commits just a part of the memory, and it is only for this part that the memory manager needs to allocate pages in real memory and in the paging file to back them up.
然后它仅仅提交一部分内存，这也是内存管理程序需要在实际内存和分页文件中分配页来支持它们的那一部分。
When a shared memory partition is activated, a suitable paging space device will automatically be selected.
在激活共享内存分区时，会自动地选择合适的分页空间设备。
If a cache is too big, then it can waste memory in the JVM and could result in low memory conditions or increased paging, both of which result in performance degradation.
如果缓存太大，则会浪费JVM中的内存，并且可能导致内存不足条件或增加内存分页，这两种情况都会导致性能下降。
Before assigning extra paging space to your system, it's worth looking at memory allocation and memory tuning.
为系统分配额外的分页空间之前，检查内存分配和内存调优是值得的。
When free physical memory starts getting low, programs that have not used recently are moved from ram to paging space to help release physical memory for more real work.
当空闲的物理内存较少时，可以将最近没有使用过的程序从RAM转移到分页空间，以帮助释放物理内存，从而完成更多的实际工作。
During the migration operation, all the memory that has been paged out to a paging space device is first read into real memory before being transmitted to the target server.
在迁移操作期间，换出到分页空间设备上的所有内存先被读入真实内存中，然后传输到目标服务器。
It calculates statistic averages for memory, paging, and CPU activity on a sampling period of a length specified by the user.
它将计算用户指定的采样时间内的内存、分页和CPU活动的统计平均值。
Obviously, given the choice between RAM and paging space, most people would prefer to use physical memory, if the RAM is available.
由于要在RAM和分页空间之间进行选择，在RAM可用的情况下，大多数人显然都更希望使用物理内存。
When adding a paging space device to the Shared memory pool, it will automatically be recognized as a common paging space device if the prerequisites mentioned previously are met.
在把分页空间设备添加到共享内存池中时，如果设备满足上述条件，会自动地识别为共用分页空间设备。
If the Shared memory partition has been configured to use redundant paging VIOS partitions, a common paging space device will be assigned.
如果共享内存分区使用冗余的分页VIOS分区，那么会分配共用的分页空间设备。
The IVM automatically created a VIOS paging device for each LPAR as part of the migration to Shared memory.
在迁移到共享内存时，IVM自动地为每个LPAR创建一个VIOS分页设备。
If you set the buffer pool size too high, then system memory usage will exceed the available physical memory, causing the operating system to spend more time paging the memory.
如果缓冲池大小过大，那么内存使用会超过可用的物理内存，从而导致操作花费更多时间对内存进行分页。
Obviously, administrators prefer to use physical memory rather than paging space, where the physical memory is available.
很显然，在可以使用物理内存的情况下，管理员更希望使用物理内存，而不是分页空间。
It creates a paging device of equal size to that of the maximum memory value of the Shared memory pool.
它创建的分页设备的大小等于共享内存池的最大内存值。
The operating system handles important details like paging different parts of the file into and out of memory as needed.
操作系统会处理一些重要的细节问题，如把文件的不同部分分页到内存上，并在需要的时候从内存里提取出来。
These pages can be either RAM or paging space (virtual memory stored on disk).
这些页面可能是RAM、或者分页空间（即存储于磁盘中的虚拟内存）。
Allocated pages can be either RAM or paging space (virtual memory stored on disk).
所分配的页面可以位于RAM或者分页空间(虚拟内存存储于磁盘上)。
While schedo can also be used to tune certain memory facilities, such as paging load control, it is mostly there for CPU scheduler tuning.
尽管schedo也可以用于优化某些内存机制，如分页负载控制，但是它主要用于CPU调度程序的优化。
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