If all the data fits in the cache, then the data is read from disk only once; after that, all requests are satisfied from the cache at memory speed.
如果所有数据都在缓存中，那么只需从磁盘读取一次数据；毕竟，所有的请求都可以用内存速度从缓存中得到满足。
The path from the system processor/memory/OS/App to the HBA contains only the read data block.
在从系统处理器/内存/操作系统/应用程序到HBA 的路径上，只传输读取数据块。
Reading data streams and writing results to streams is convenient, because the application does not have to read a large portion of the file, much less the whole file, into memory.
读取数据流并将结果写入流是很方便的，因为应用程序不一定要将文件的大部分（更不必说整个文件）读取到内存。
Special system calls, or requests to the UNIX kernel, allocate and free the memory and set permissions; common read and write operations put and get data from the region.
用特殊的系统调用(即对UNIX内核的请求)分配和释放内存并设置权限；通过一般的读写操作读写内存段中的数据。
The files are decrypted when they are read from the disk into memory so that the file data kept in memory is in clear format.
在将文件从磁盘读取到内存时对文件解密，因此文件数据能够以明文格式保存在内存中。
As a result, data is continually written and read from disk rather than from main memory, which is very detrimental to performance.
导致的结果是不断地从磁盘而非主内存读写数据，这是影响性能的重要限制因素。
In other words, it may be removed from the buffer and written back to the disk before subsequent data pages can be read into the memory and processed.
换言之，在后续数据页被读入内存并被处理之前，它们可能已经从缓冲区中删除，并写回磁盘。
Buffer Cache - Memory allocated for storing data blocks read from physical data files.
缓冲区缓存——为存储从物理数据文件读取的数据块而分配的内存。
Therefore, read events that request data already stored in memory don't generate a trip to the hard disk.
因此，请求存储在内存中的数据的读事件不会访问硬盘。
The message is read directly into a memory data structure that is divided into the data fields of the message.
消息被直接读入分解成消息数据字段的内存数据结构。
The SPE cannot read main memory directly, but instead must import and export data between the local store and main memory using DMA commands to a unit called the memory flow controller, or MFC.
SPE不能直接读取主存，相反地必须通过对内存流控制器(或mfc)的单元使用dma命令来在本地存储和主存之间导入和导出数据。
To speed up the process, Informix has the ability to read the next data page into memory when the first one is still in the memory.
为了加速这个过程，当第一个页面仍然在内存中时，Informix就可以将下一数据页读入内存。
Because workloads with high Symmetrix cache read-hit rates are serviced at memory access speed, storing the data needed on EFDs may not result in a significant increase in performance.
因为具有高symmetrix缓存读中率的工作负载都是以内存访问速度实现的，所以在EFD中存储所需要的数据可能不会对性能有大的改进。
Being prudent, you use Data: : Dumper to look at what gets read into memory and are upset to find what's seen in Listing 8.
谨慎起见，先使用Data：Dumper查看在内存中读入了什么内容，结果如清单8所示。
I'd encourage you to refresh your memory and read one of my blog post back one year ago - PLM Data, Identification and Part Numbers.
我想再次唤醒大家的记忆，请重新读一读这篇一年前写的博文——PLM数据，身份标识和零件编号。
For read-only data, one of the in-memory caches might be enough.
对于只读数据，一个内存缓存可能就足够了。
This allows the entire lookup table to be loaded into memory each time a user submits a request to read or write data.
在用户每次提交一个读写数据的请求时，这可以将要查询的整个表装入内存中。
These many is caused by a hardware problem, such as damaged, some blocks in memory or CPU overheating, or hard disk is bad, or light aging, read out data has a problem, and so on.
这些情况很多是由于硬件问题造成的，如内存中某些区块损坏，或者CPU过热，或者硬盘存在坏道，或者光驱老化，读取出来的数据有问题等等。
From a performance perspective, you should provide a SAXResult when the back end data is substantial, as the other implementations require that the entire data be read into memory first.
从性能角度来看，如果后端数据足够多的时候，您应该提供一个SAXResult，因为其他实现首先需要将整体数据读入到内存。
The following code example shows how to read and write data using memory as a backing store.
下面的代码示例说明如何通过将内存用作备份来读取和写入数据。
WebSphere eXtreme Scale uses loaders to read data from and write data to the database from the in-memory cache.
WebSphereeXtremeScale使用了加载器读取内存中缓存的数据，以及将数据写入到数据库中。
Data access (Advanced) : By partitioning the data model structure and converting DAOs to access directly the XAP In-Memory data Grid, read and write performance is improved.
数据存取(高级)：通过划分数据模型结构和把DAO转换成直接访问XAP内存数据网格，改进读写性能。
Buffer Cache Memory allocated for storing data blocks read from physical data files.
缓冲区缓存为存储从物理数据文件读取的数据块而分配的内存。
Controller 218 typically contains buffer memory for the user data being written to, or read from, the memory array.
控制器218通常含有缓冲存储器以用于将用户数据写入到存储器阵列或从存储器阵列读取用户数据。
The punctured data can be decoded (120, 122) when data is to be read from the memory device (100).
当将从所述存储器装置(100)读取数据时，可对所述经穿孔数据进行解码(120、122)。
Here I am using two different instances of same application to read write data from memory mapped file.
在这里我用两个相同的应用程序的不同实例来读写数据从内存映射文件。
The application calls a serializer "write" method to save the document, while a deserializer "read" method accesses the data store and recreates the original instance in memory.
在理想状况下，与记忆体之间进行的文件序列化和还原序列化程序对于应用程式而言应该是透明的。
In some systems, instructions can be stored in read-only memory while data memory generally requires read-write memory.
在一些系统中，指令可以存储在只读存储器中而数据存储则需要可读科协存储器。
In some systems, instructions can be stored in read-only memory while data memory generally requires read-write memory.
在一些系统中，指令可以存储在只读存储器中而数据存储则需要可读科协存储器。
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