物理内存是加快访问的关键。
处理器通过内存总线连接到物理内存。
The processor is connected to physical memory by the memory bus.
改变物理内存的配置和使用。
物理内存的使用方式能够显著地影响性能。
The way in which physical memory is used can greatly affect performance.
它必须足够低，以在物理内存的范围内包含堆。
It must be low enough to contain the heap within physical memory.
c—空闲物理内存量。
需要为每个程序分配物理内存区域来在其中运行。
Each program needs to be allocated regions of physical memory to work in.
但是，这也意味着系统必须有非常大的物理内存。
But that would also mean having a system with a couple terabytes of physical memory.
碎片是一个实际的物理内存块，它存储分区的内容。
A shard is a real, physical chunk of memory that stores the contents of a partition.
有些变体仅在已经使用完物理内存时才使用交换空间。
Some only use swap space when the physical memory has already been used.
保留本机内存时，它不受物理内存或其他存储的支持。
When native memory is reserved, it is not backed with physical memory or other storage.
在图3中可以看到，物理内存总量是7808MB。
From Figure 3, you can see that the total physical memory is 7808mb.
当内存缓冲区被锁定后，将不能从物理内存进行分页。
When memory is locked, it cannot be paged out of physical memory.
分配给WPAR的内存(物理内存)和CPU资源量。
The amount of memory (physical memory) and CPU resources allocated to a WPAR.
每五秒钟查询一个可用物理内存并将结果写入日志文件。
Every five seconds, query the available physical memory and write the result to the log file.
因此，配置的逻辑内存总量可以大于池中的物理内存量。
So, the total logical configured memory can be greater than the physical memory in the pool.
一定要保证规定的JVM最大堆长度小于机器的物理内存。
Be sure that the JVM maximum heap size specified is less than the total physical memory of the machine.
一个重要的优势在于，它能够配置具有较少物理内存的系统。
One of the key benefits is that it provides the ability to configure systems with less physical memory.
在默认情况下，系统并不为大页面物理内存池分配任何内存。
By default, the system does not allocate any memory to the large page physical memory pool.
由于缺乏为进程定义内存的能力，底层物理内存被过度使用。
Having the ability to sparsely define memory for processes means that the underlying physical memory can be overcommitted.
现在应该看到一个进程列表，按照物理内存的实际使用情况排序。
You should now see a list of processes, sorted by actual physical memory usage.
如果这会显著影响性能，可能应该考虑在池中增加更多物理内存。
If this impacts performance dramatically, it's probably time to add more physical memory to the pool.
如果有过量的物理内存，那么可以用该内存来配置ESTORE。
And if you have excess physical memory, you can use it to configure ESTORE.
开发人员没有检测到这个问题，因为他们的机器有更多的物理内存。
The developers hadn't detected the problem because their machines had more physical memory.
整个物理内存被划分为若干块，这些块称为物理内存块(PMB)。
The whole physical memory is divided into blocks called physical memory blocks (PMB).
在给定的时刻，“正在使用的”逻辑内存量等于池中的物理内存量。
The logical memory "in use" at a given time is equal to the physical memory in the pool.
消息流程的工作集可能很大，因此，所需的物理内存的数量也可能很大。
The working set of message flows can be substantial and, consequently, so might the amount of physical memory that is required.
我将介绍AIX如何使用虚拟内存来寻址比系统中物理内存更大的内存。
I discuss how AIX USES virtual memory to address more memory than is physically on your system.
因此，增加内存时获得的性能提升源于物理内存的改变，而非其他东西。
Therefore, any throughput gains that occurred when we increased the memory were the result of changes in physical memory and not something else.
因此，增加内存时获得的性能提升源于物理内存的改变，而非其他东西。
Therefore, any throughput gains that occurred when we increased the memory were the result of changes in physical memory and not something else.
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