Database records are read and updated in the buffer pool area of memory.
数据库记录是在内存的缓冲池区域里被读取和更新的。
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。
Thus, the read operations compete with log writing and the write operation for data pages from the buffer pool.
因而，读操作与日志写和缓冲池中的数据页的写操作之间存在竞争。
You first must create the buffer, fill it, then rewind the position to the beginning so you can read from the start.
必须首先创建一个缓冲区，先填充它，然后将位置倒回起始点，这样才能从头读。
Here, reading the bytes is not enough to extract the necessary information; it returns a buffer if the string is read.
此处，读取字节还不足以提取必要的信息，如果要读取字符串，则要返回一个缓冲区。
You can point it at another file quite easily; it's a bit harder to, for instance, read from a buffer.
您可以非常简单地将它指向另外一个文件；从缓冲区中进行读取稍微有些困难。
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。
This buffer caches JMS message data that may otherwise need to be read from disk.
该缓冲区缓存原本需要从磁盘读取的JMS消息数据。
The consumer of the ATQ operator can read data one row at a time from the ATQ buffer.
ATQ操作符的消费者可以每次从 ATQ缓冲区中读取一行数据。
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。
Number of pages prefetched into the buffer pool, but never read.
预抓取到缓冲池，但从未读取的页面数量。
In a similar fashion, you can read data segments off segment by segment from an abstract buffer with the following function.
采用类似的方式，您可以使用以下函数，逐段地从抽象缓冲区读取数据段。
Now that you have the unpacked values from the binary buffer that you read, you can use the standard print commands to get the output necessary.
现在您已从读取的二进制缓冲区获得了拆包的值，那么您可以使用标准的print命令来获得必要的输出。
This command USES the klogctl system call to read the kernel ring buffer and emit it to standard output (stdout).
这个命令使用klogctl系统调用来读取内核环缓冲区，并将它转发到标准输出(stdout)。
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。
The transferTo() method causes the file contents to be copied into a read buffer by the DMA engine.
transferTo()方法引发DMA引擎将文件内容拷贝到一个读取缓冲区。
Interestingly, Ruby 1.9.0 has the lowest CPU usage, with an implementation that uses readpartial, "no timeout for socket reads" and "pre-allocated String buffer for each read".
有趣的是，Ruby1.9.0对CPU的占有率最低，其实现采用了 readpartial：“不对socket读取设置超时”，同时“提前为每次读取分配字符串缓存”。
For example, assume that Member 1 in Figure 1 wants to read a data page that isn't in its local buffer pool.
例如，假设图1中Member 1要读取不在它本地缓冲池中的数据页。
Buffer Reads: Number of times a page has been read from the buffer pool and not read from disk.
Buffer Reads：从缓冲区池(而不是磁盘)读取的页面数量。
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。
Step two: data is copied from the kernel buffer into the user buffer, and the read system call returns. The return from the call caused a context switch from kernel back to user mode.
步骤二：数据从内核空间缓冲区复制到用户空间缓冲区，之后系统调用read返回，这导致了从内核空间向用户空间的上下文切换。
In a buffer wrap condition, the first read returns only the keyword BUF_WRAP.
如果出现缓冲区回绕，第一个read只返回关键字BUF _WRAP。
The requested amount of data is copied from the read buffer into the user buffer, and the read call returns.
所需的数据被从读取缓冲区拷贝到用户缓冲区，read调用返回。
Step two: data is copied from the kernel buffer into the user buffer, and the read system call returns.
所需的数据被从读取缓冲区拷贝到用户缓冲区，read()调用返回。
The next read returns the event data that was able to fit in the buffer.
下一个read返回缓冲区能够容纳的事件数据。
Only a small buffer is needed to read or write data.
它只需要使用一个很小的缓冲区来读写数据。
For example, read and write requests to the underlying device drivers migrate through the buffer cache.
例如，对底层设备驱动程序的读写请求会通过缓冲区缓存来传递。
Each thread can read and write only to its own slot, rather than to the complete buffer.
每个线程只能够读写它自己的槽位，而不是整个缓冲区。
In particular, it's often the case that you need to keep track of a buffer length, or read a length of something.
特别是，当您需要跟踪缓冲区长度或读取某个内容的长度时，通常就是这种情况。
Instead, the data could be transferred directly from the read buffer to the socket buffer.
数据可以直接从读取缓冲区传输到套接字缓冲区。
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