SIMD处理机特别适合于要求大量高速向量或矩阵计算的场合，数据缓存系统和对准网络是它的关键部件。
SIMD computer is mostly suitable for high-speed calculation of vectors, and matrix of a large quantity, and image convolution is the most important technology of image processing.
并在此基础上，通过分析数据缓存系统的特点，提出针对缓存一致性问题的解决方法，其中重点阐述为本文所提缓存系统模型而设计的一种改进方法，即目录表法。
After analyzing characteristics of data caching, several solutions to problem of cache coherence are offered and a new directory lists method is designed for the cache system.
更好的方法是创建一个缓存策略，这样可以改善系统性能并最大限度降低重复数据请求对源系统造成的负面影响。
Instead, create a caching strategy to both improve system performance and minimize any negative impact on the performance of source systems caused by repeated requests for data.
测试缓存数据的有效性可能是处理缓存系统时需要使用的另一种方法。
A test for cache data validity is an additional method you might need when dealing with a caching system.
这种恢复并不会导致系统或应用数据的丢失，也不会丢失设置，甚至连缓存都不会丢失。
This recovery is done without losing system or application data, without losing Settings and even without losing the cache.
缓存数据所适合的示例是客户记录，包括存储在后端系统的客户地址。
An example when cache data would be appropriate is a customer record, including the address of the customer, stored in a backend system.
然后，它将使用流(通过rshd)将来自客户机的所有数据缓存到NIM主机上的文件系统中。
It will then use streams (via RSHD) to cache all of the data from the client to the file systems on the NIM master.
这是因为Oracle使用大量的虚拟内存，特别是对于其系统全局区域（SGA），这个区域用于缓存表数据和其他东西。
This is because Oracle uses a lot of virtual memory, particularly with respect to its System Global Area (SGA), which is used to cache table data, among other things.
nim主机将nim客户机的数据复制到nimadmvg中的缓存文件系统。
The nim master copies the nim client's data to the cache file systems in nimadmvg.
客户端分页是一些包含所有其他文件系统(例如，JFS2和网络文件系统(NFS))的缓存数据的分页。
Client pages are pages containing cached data for all other file systems (for example, JFS2 and Network file system (NFS)).
因此，只一次获取数据，对数据进行缓存，并让所有其他组件使用该缓存的数据，而非再次访问后端系统，这是很有益的。
Therefore, it is useful to get the data only once, cache it, and have all other components use the cached data, instead of accessing the backend system again.
最后，安装更多内存让文件系统可以把文件和元数据缓存在内存中。
Finally, having extra memory on hand allows the file systems to cache files and metadata in memory.
现在，对于一般的数据库操作，不必考虑文件系统缓存，因为DB 2实现了缓冲池，这些缓冲池已经做了必要的缓存。
Now, for normal database operation you do not really have to worry about the file system cache because DB2 implements buffer pools that do the necessary caching already.
当要在缓存中存储的数据量超过应用程序服务器系统的主存时，您就可以使用此功能。
You can use it when the amount of data to be stored in the cache exceeds the main memory of the application server systems.
大多数文件系统都通过缓冲区缓存来相互通信，这种缓存通过缓存最近使用的数据来优化对物理设备的访问。
Most of the file systems communicate through a buffer cache, which is a cache that optimizes access to the physical devices by caching recently touched data.
因此，使用缓存帮助数据库减负的系统通常需要通过复制来避免这些情况。
Thus, systems in which the cache buffers the database from excessive load typically require replication to avoid these scenarios.
如果要在真正的缓存中存储数据，则系统可能丢弃缓存的部分以获得用于其他任务的内存，这是因为通常客户机可以重新创建缓存的数据。
If you were to store the data in a real cache, then the system could discard parts of the cache to gain memory for other tasks because the client can always re-create the cached data.
磁盘子系统将管理从高速缓存到磁盘的数据复制。
Copying the data from the cache to the disk will be managed by the disk subsystem.
文件系统驱动程序更新适当的元数据，但是没有时间将其缓存中的数据刷新到磁盘的新块中。
The filesystem driver updated the appropriate metadata, but didn't have time to flush the data from its caches to the new blocks on disk.
重要的是，要注意当每一个数据库表空间创建时，文件系统缓存已经通过指定NOFILESYSTEM cache子句并被禁用。
It is important to note that file system caching was disabled by specifying the no file system CACHE clause when each table space in the database was created.
在不同的数据库和操作系统中，动态语句高速缓存的激活是不同的。
The activation of dynamic statement caching will vary with database and operating system.
这种技术的主要目标是尽可能优化缓存的使用，减少系统在执行给定的操作时必须获取数据并把数据放进缓存的次数。
This technique focuses on how best to optimize the usage of cache in order to reduce the number of times the system must retrieve data and place it in cache to perform a given set of operations.
仅当数据在对象缓存中不可用时，才会调用后端系统交付请求的数据。
Only if the data is not available in the object cache, a backend system might be called to deliver the requested data.
因为db2缓冲池是系统主内存的一部分，DB 2数据库管理器在它读取或写入磁盘介质时将它分配给缓存表和索引数据。
Since a DB2 buffer pool is a part of the main memory of the system, the DB2 database manager allocates it for caching tables and index data when it reads or writes to and from media disks.
现在所有的系统有在使用缓存，即在内存中开辟一块区域来存放数据。
No modern web system runs without a cache, which is an in-memory store that holds a subset of information typically stored in the database.
该类别中的系统计数器跟踪如可用字节和缓存字节等数据。
System counters within this category track data such as bytes available and bytes cached.
特别是Ext4利用日志校验和写屏障来减少由日志或乱序写入磁盘缓存(out -of - orderwritecachingonharddrives)而导致的文件系统数据部一致的概率。
In particular it USES journal check summing and write barriers to help reduce the probability of data corruption from journals and out-of-order write caching on hard drives.
许多大型站点都使用memcached在分布式内存系统中缓存各种对象，这样就不需要从磁盘或数据库读取它们。
Memcached is used by many large sites to cache various objects in a distributed memory system, rather than having to read from disk or a database.
Brendan忙着安装新的机器，我则开始砍掉系统里所有数据库密集的功能，Chris负责增加缓存……大概中午1点网站重新上线，看起来很稳定。
While Brendan worked on setting up boxes I started ripping out every database intensive feature of our system and Chris added more caching... Around 1 AM we were back online and looking pretty stable.
使用GPFSpagepool 可以缓存用户数据和文件系统元数据。
Use GPFS pagepool to cache user data and file system metadata.
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