Further, applications that might benefit from having a file system read ahead or high buffer cache hit rates might actually see performance degradation.
而且，对于那些受益于文件系统预读功能或者较高缓冲区缓存命中率的应用程序，可能会出现性能的降低。
The journal is a special file that logs the changes destined for the file system in a circular buffer. At periodic intervals, the journal is committed to the file system.
所谓日志就是一种特殊的文件，它会在一个循环的缓冲区内记录文件系统的修改，然后将其定期提交到文件系统。
Without file system caching, Q1 performs similarly on XML and CLOB columns, with a slight disadvantage (10%) for the CLOB column which is not buffered in the buffer pool.
在没有文件系统缓存的情况下，XML和clob列的Q1执行效果类似，不在缓冲池进行缓冲的clob列略微落后(10%)。
Without file system caching, this overhead is mitigated by the fact that XML columns are buffered in the DB2 buffer pool and CLOB columns are not.
在没有文件系统缓存的情况下，xml列在db2缓冲池进行缓冲而clob列则不是，从而可降低开销。
Journaling file systems use a journal to buffer changes to the file system (which is also used in crash recovery) but can use different strategies for when and what is journaled.
日志文件系统是使用日志来缓冲文件系统的修改(同时也可以应用于紧急故障恢复)的，但可以根据记录的时间与内容采取不同的策略。
Sendfile (2) is a technique that avoids buffer copy overhead, and it directly pushes bits from the file system onto the network.
Sendfile(2)是一种避免缓冲区复制开销的技术，并且它直接将数据位从文件系统转移到网络。
Linux, under normal circumstances, USES a system file cache to buffer, read, and write requests from disk.
在一般情况下，Linux使用一个文件系统缓存为磁盘请求进行缓冲和读写。
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.
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。
Below the file system layer is the buffer cache, which provides a common set of functions to the file system layer (independent of any particular file system).
文件系统层之下是缓冲区缓存，它为文件系统层提供了一个通用函数集(与具体文件系统无关)。
The system notifies you of file changes, and it stores those changes in a buffer that the component creates and passes to the APIs.
系统告知您有档案变更，它将那些变更储存于元件所建立的缓冲区，并传递至 API。
The system notifies you of file changes, and it stores those changes in a buffer that the component creates and passes to the APIs.
系统告知您有档案变更，它将那些变更储存于元件所建立的缓冲区，并传递至 API。
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