因?yàn)?/c>缺少內(nèi)存和過多的交換的問題。
AIX newbies are sometimes surprised to hear that the VMM services all memory requests from the system, not just virtual memory.
有時(shí)候，令AIX新手感到困惑的是，VMM服務(wù)如何處理系統(tǒng)中所有的內(nèi)存請(qǐng)求，而不僅僅是虛擬內(nèi)存本身。
It is also easy to see the virtual memory savings when running the example program in more than one JVM.
在多個(gè)JVM中運(yùn)行示例程序時(shí)，很容易看出虛擬內(nèi)存的節(jié)省。
This counter can be used to measure the degree to which available virtual memory is being fragmented .
此計(jì)數(shù)器可用于度量可用虛擬內(nèi)存的碎片化程度。
The operating system creates the illusion of multiple processes , each executing on its own processor with its own ( virtual ) memory .
操作系統(tǒng)創(chuàng)建了多個(gè)進(jìn)程，每一個(gè)進(jìn)程有自己的處理器和（虛擬）內(nèi)存。
Try to allocate your hard disk to different logical volumes, which can make it easy to expand virtual memory in different logical volumes.
嘗試將硬盤分配給不同的邏輯卷，這能夠以不同的卷輕松擴(kuò)展虛擬內(nèi)存。
Virtual memory allows multiple processes to share physical memory without being able to corrupt one another's data.
虛擬內(nèi)存允許多個(gè)進(jìn)程共享物理內(nèi)存，而且不會(huì)破壞彼此的數(shù)據(jù)。
In a computer with virtual memory, less-used parts of programs are shifted from RAM to a hard disk and are moved back only when needed.
在使用了虛擬存儲(chǔ)器的計(jì)算機(jī)中，很少使用的程序被從RAM移到硬盤中，僅當(dāng)需要時(shí)才被移回來(lái)。
First, we'll take a look at tmpfs, also known as the virtual memory (VM) filesystem.
首先，我們會(huì)簡(jiǎn)單地介紹一下tmpfs，也就是我們知道的虛擬內(nèi)存（virtualmemory，VM）文件系統(tǒng)。
The virtual memory size property for each of the components in the pattern can be locked at the time of authoring.
模式中的每個(gè)組件的虛擬內(nèi)存大小屬性都可以在創(chuàng)建時(shí)鎖定。
To understand the reverse mapping technique, let's quickly go through some fundamentals of the Linux virtual memory system.
為了理解反向映射技術(shù)，讓我們來(lái)首先簡(jiǎn)單了解Linux虛擬內(nèi)存系統(tǒng)的一些基本原理。
Virtual addresses used by an application program are mapped into physical addresses by the virtual memory system.
在虛擬內(nèi)存機(jī)制下，應(yīng)用程序通過使用虛擬地址來(lái)映射物理地址。
With this option, allocations from the "special" pool lie at the end of a page that's followed in virtual memory by a not- present page.
使用這個(gè)選項(xiàng)，從“特別”池分配的內(nèi)存位于一個(gè)頁(yè)的最后，它通過一個(gè)非當(dāng)前頁(yè)跟隨在虛擬內(nèi)存中。
Virtual memory Games tend to be huge consumers of memory, so any memory swapping is bound to produce slow-downs.
虛擬內(nèi)存游戲趨于消耗大量的內(nèi)存，所以任何一個(gè)內(nèi)存交換技術(shù)必然會(huì)產(chǎn)生緩慢下調(diào)。
It's important to understand that the VMM services all memory requests from the system, not just virtual memory.
VMM為系統(tǒng)中所有的內(nèi)存請(qǐng)求（而不僅僅是虛擬內(nèi)存的內(nèi)存請(qǐng)求）提供服務(wù)，了解這一點(diǎn)是非常重要的。
VM Size: The online help describes this as the "total private virtual memory allocated by the process. "
VMSize（虛擬內(nèi)存大小）：聯(lián)機(jī)幫助將其稱為“分配給進(jìn)程私有虛擬內(nèi)存總數(shù)。”
This might seem a bit arbitrary at first, but remember that tmpfs is also known as the "virtual memory filesystem" .
剛開始這看起來(lái)可能有點(diǎn)武斷，但請(qǐng)記住tmpfs也是我們知道的“虛擬內(nèi)存文件系統(tǒng)”。
While this may not seem like a positive, tmpfs data is not preserved between reboots, because virtual memory is volatile in nature.
這看起來(lái)可能不象是個(gè)積極因素，tmpfs數(shù)據(jù)在重新啟動(dòng)之后不會(huì)保留，因?yàn)?/c>虛擬內(nèi)存本質(zhì)上就是易失的。
Even with these improvements to virtual memory, it is still important that you monitor virtual memory performance.
雖然對(duì)虛擬內(nèi)存進(jìn)行了這些改進(jìn)，但是監(jiān)視虛擬內(nèi)存的性能仍然很重要。
In the next post we'll go back up the abstraction ladder to take a thorough look at virtual memory.
在下一期，我們將返回抽象的階段將實(shí)際的存儲(chǔ)過程研究透徹。
Mapping between the application buffer pool and AWE-mapped memory is handled through manipulation of the Windows virtual memory tables.
應(yīng)用程序緩沖池和AWE映射內(nèi)存之間的映射通過操作Windows虛擬內(nèi)存表來(lái)完成。
In the modern implementation of virtual memory that Windows uses, virtual storage is organized into equal-sized units known as pages.
Windows所使用的現(xiàn)代虛擬內(nèi)存實(shí)現(xiàn)中，虛擬存儲(chǔ)被組織成大小相同的單位，稱為頁(yè)。
ps -aux command. VSZ is Virtual Set Size, the total virtual memory size of the process. ie. the total amount of memory in swap and RAM.
VSZ是虛擬集合的大小，即進(jìn)程占用的全部虛擬內(nèi)存，具體來(lái)說就是交換區(qū)和RAM的總大小。
The virtual memory subsystem has been enhanced with a reverse-mapping algorithm, which provides improvements in memory constrained systems.
通過使用反向映射算法，虛擬內(nèi)存子系統(tǒng)已經(jīng)得到了提高，這為內(nèi)存受限的系統(tǒng)帶來(lái)了改進(jìn)。
If you try to tune a server when there is no free CPU or where the operating system is swapping virtual memory, you won't get very far.
如果您在沒有空閑CPU時(shí)或者在操作系統(tǒng)需要交換虛擬內(nèi)存的地方試圖優(yōu)化服務(wù)器，則無(wú)法使其變得很快。
The size of virtual memory for a process is 4GB with one quarter of the process space reserved for the Linux kernel.
一個(gè)進(jìn)程的虛擬內(nèi)存的大小是4GB，其中四分之一的進(jìn)程空間是為Linux內(nèi)核預(yù)留的。
Virtual memory addresses of the data to be sent are provided to a sending agent.
待發(fā)送數(shù)據(jù)的虛擬存儲(chǔ)地址被提供給發(fā)送代理。
Just like with other forms of UNIX, AIX employs virtual memory structures to help complement physical memory.
與其他風(fēng)格的UNIX一樣，AIX也使用虛擬內(nèi)存結(jié)構(gòu)幫助補(bǔ)充物理內(nèi)存。
However, inlining too much code might make your program so large that the number of virtual-memory page faults increases.
但是，內(nèi)嵌過多的程式碼可能會(huì)使程式過大，而增加虛擬記憶體的分頁(yè)錯(cuò)誤數(shù)目。
The Linux kernel operates in a virtual memory mode: for every virtual page there is a corresponding physical page of memory in the system.
Linux內(nèi)核工作于虛擬內(nèi)存模式：每一個(gè)虛擬頁(yè)對(duì)應(yīng)一個(gè)相應(yīng)的系統(tǒng)內(nèi)存的物理頁(yè)。
This parameter is provided to ensure that an application does not consume unnecessarily large amounts of virtual memory within an agent.
提供這個(gè)參數(shù)是為了確保應(yīng)用程序不會(huì)不必要地消耗代理中的大量虛擬內(nèi)存。
Other channels are used to access virtual memory associated with a user context on the PPE.
其他通道用來(lái)訪問與PPE上的用戶上下文關(guān)聯(lián)在一起的虛擬內(nèi)存。
Virtual memory subsystem enhancements, including a reverse-mapping algorithm that provides improvements in memory-constrained systems.
虛擬內(nèi)存子系統(tǒng)改進(jìn)，包括在內(nèi)存壓力比較大的系統(tǒng)中提供的反向映射算法。
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還使用磁盤交換空間來(lái)存儲(chǔ)，并且當(dāng)為存儲(chǔ)文件而請(qǐng)求頁(yè)面時(shí)，使用虛擬內(nèi)存（VM）子系統(tǒng)。
m = Memory Gives you more details on where your memory is going, system (kernel) and processes, and active virtual memory.
m=內(nèi)存（Memory）提供內(nèi)存使用的更詳細(xì)的信息，如系統(tǒng)（內(nèi)核）和進(jìn)程、活動(dòng)虛擬內(nèi)存。
Displays the total number of free virtual memory blocks that are greater than or equal to 16 MB.
顯示大于或等于16MB的可用虛擬內(nèi)存塊的總數(shù)。
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