Once a checkpoint occurs, the disk buffer is released.
在出现检查点时，就会释放磁盘缓存。
This prevents the server from doing added CPU and disk work if the buffer overflows.
这可防止在缓冲区溢出时服务器进行额外的CPU和磁盘工作。
Increase the size of the log buffer area if there is considerable read activity on a dedicated log disk, or there is high disk utilization.
如果在某个专用的日志磁盘上存在大量的读活动，或者具有较高的磁盘利用率，就增加日志缓冲区域的大小。
Log Buffer - Memory used to store all changes to database before it is flushed to the logs on disk.
日志缓冲区——在将所有对数据库的更改刷新到磁盘上的日志之前，用来存储这些更改的内存。
A ring buffer is a logging technique for applications whereby the relevant data to be logged is kept in memory instead of writing it to a file on a disk every time.
循环缓冲区是一种用于应用程序的日志记录技术，它可以将相关的数据保存在内存中，而不是每次都将其写入到磁盘上的文件中。
Virtual segment also contains dictionary cache, stored procedures cache, and big buffer pools used for writing large block of pages to disk at once.
虚拟内存段还包含字典缓存器，存储过程缓存器，以及在向磁盘一次性写入大块页面时使用到的较大的缓冲池。
When the end of the buffer is reached, some serialisation takes place that reduces the rate of data transfer to disk.
达到缓冲区尾部后，需要进行某种序列化操作，以降低数据传输到磁盘的速率。
If the buffer pool is large enough to keep the required data in memory, less disk activity will occur.
如果缓冲池大到足以在内存中保存所需数据，就会发生较少磁盘活动。
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。
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。
It reads entire files into its own buffer, makes the specified operations on that copy, and optionally writes the buffer to disk.
它将整个文件读入自己的缓冲区，对该副本执行指定的操作，并可选地将缓冲区写到磁盘。
Audit records are typically written into a memory buffer before being flushed to disk.
审计记录通常首先被写入到一个内存缓冲区，然后才刷新到磁盘。
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。
These page cleaners write changed pages from the buffer pool to disk before the space in the buffer pool is required by a database agent.
在数据库代理程序需要缓冲池中的空间之前，这些页清除程序将缓冲池中已更改的页写到磁盘。
But the small buffer size makes it unsuitable for larger quantities of log information, and the logged information isn't stored to disk so it's hard to analyze over a period of time.
但是缓冲区尺寸小造成它不适合更大数量的日志信息，而且记录的信息不能保存到磁盘也使得难以分析一段时间内的性能。
The data gets copied multiple times among the disk, kernel buffer, and user buffer before it is finally delivered to the application.
数据在被最终传入到应用程序前，在磁盘、内核缓冲区和用户缓冲区中被拷贝了多次。
In Listing 2, the image is already in the image buffer and all we have to do is save it to the file on disk.
在清单2中，图像已经在图像缓冲区中，我们只需将它保存到磁盘上的文件中。
Page cleaners, on the other hand, write changed pages from the buffer pool to disk before the space in the buffer pool is required by a database agent.
另一方面，数据库代理需要缓冲池中的空间之前，页面清洗器将已修改的页面从缓冲池写入磁盘。
The log Buffer is the amount of main memory used to accumulate log records that will be written out to disk.
日志缓冲区是用于存放将要写入磁盘中的日志记录的主存量。
For example, if you had a 2 GB buffer pool, when 60% of changed pages is reached, 1.2 GB (60% of 2 GB) would be written to disk as page cleaners are triggered.
例如，如果您具有一个2GB的缓冲池，当达到60%的修改页面时，在触发页面清洗器时就有1.2 GB (2 GB的60%)将写入磁盘。
Before extracting audit records from the db2audit.log file, flush any remaining audit records in the buffer out to disk by issuing the following command.
在从db2audit. log文件提取审计记录之前，发出以下命令将缓冲区中的所有审计记录刷新到磁盘。
In Listing 1, I set up libtiff and create a simple buffer that contains an image I can then write out to disk.
在清单1中，我设置了libtiff并创建一个简单的缓冲区，使之包含我稍后可以写到磁盘上的图像。
The first copy is performed by the DMA engine, which reads file contents from the disk and stores them into a kernel address space buffer.
DMA模块从磁盘中读取文件内容，并将其存储在内核空间的缓冲区内，完成了第1次复制。
Fortunately, Lucene's IndexWriter class exposes three parameters to let you adjust the size of the buffer and the frequency of the disk writes.
幸运的是，Lucene的类IndexWriter提供了三个参数用来调整缓冲区的大小以及往磁盘上写索引文件的频率。
When MySQL must perform a sort, it allocates a sort buffer to store the rows as they're read from disk.
当MySQL必须要进行排序时，就会在从磁盘上读取数据时分配一个排序缓冲区来存放这些数据行。
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。
The first copy (see Figure 1) is performed by the direct memory access (DMA) engine, which reads file contents from the disk and stores them into a kernel address space buffer.
直接内存存取(direct memory access,DMA)引擎执行了第一次拷贝(参见图1)，它从磁盘中读取文件内容，然后将它们存储到一个内核地址空间缓存区中。
Writes Cache: Parentage of time that a page was written to the buffer pool but not to disk.
WritesCache：页面写到缓冲区池(而不是磁盘)的次数百分比。
Db2 page Cleaner (db2pclnr) : Equivalent to DBWR process in Oracle, this process cleans the buffer pool before pages from the disk are moved into the BP.
db 2PageCleaner (db2pclnr)：相当于Oracle中的DBWR进程，该进程在将页从磁盘上转移到BP中之前，清理缓冲池。
The log buffer holds log records in storage until they are written to hard disk drive. Log records are written to the hard disk drive when one of the following occurs.
日志缓冲区将容纳存储器中的日志记录，直到它们被写回硬盘驱动器。
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