The hit ratios for data and index pages reflect the number of times a page request was handled by the buffer pool directly without requiring disk I/O.
数据和索引页面的击中率反映了缓冲池在不需要磁盘I/O的情况下直接处理一个页面请求的时间量。
This setting controls the size of the NSF buffer pool, a section of memory dedicated to buffering I/O transfers between the NIF indexing functions and disk storage.
这个设置控制NSF缓冲池的大小，后者是用于缓冲NIF索引函数与磁盘存储之间的I/O传输的一部分内存。
Transactions requiring disk I/O, such as flushing dirty pages from the buffer pool or flushing logs from the log buffer, may wait.
要求磁盘I/O 的事务，例如刷新缓冲池中的脏页或者刷新日志缓冲区中的日志，可能需要等待。
The overall buffer size has a significant effect on DB2 performance, because a large number of pages can significantly reduce I/O, which is the most time-consuming operation.
整个缓冲区大小对DB2性能有巨大影响，这是因为大量的页可以显著地减少I/O这一最耗时的操作。
However, over-allocating free space may result in wasted DASD space, less data transferred per I/O, less efficient use of buffer pools and more pages to scan.
然而，过多地分配空余空间可能会产生浪费的DASD 空间，导致每次I/O 只能传输更少的数据，缓冲池的利用效率更低，并且要扫描更多的页。
The block I/O buffer (kiobuf) in the 2.6 kernel allows I/O requests larger than PAGE_SIZE.
在 2.6 中块I/O缓冲区（kiobuf）允许 I/O请求可以比 PAGE_SIZE大。
This can potentially result in buffer copying and object churn on every I/O, which are exactly the sorts of things we'd like to avoid.
这会潜在地在每个I/O导致缓冲区拷贝和对象粗制滥造，这确实是我们喜欢避免的五花八门的事情。但，依赖于实现，事情或许没这么糟糕。
The interface uses a circuit based on dual port FIFO buffer memory to realize data transfer of different I/O velocity between the two computers.
该接口采用双端口FIFO缓冲存储技术，实现两机间不同I／O速度的数据通信。
Stream I/O Model This leads to efficient I/O but beware: data written to a buffer does not appear in a file (or device) until the buffer is flushed or written out. (/n does this).
流是（表达）读写数据的一种可移植的方法，它为一般的I/O操作提供了灵活有效的手段。
Stream I/O Model This leads to efficient I/O but beware: data written to a buffer does not appear in a file (or device) until the buffer is flushed or written out. (/n does this).
流是（表达）读写数据的一种可移植的方法，它为一般的I/O操作提供了灵活有效的手段。
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