如果你把AFD . SYS的缓冲关闭，当应用程序收发数据时，应用程序缓冲区的所有页面将被锁定到物理内存中。
Whenever an application posts a send or receive, and AFD.SYS's buffering is disabled, all pages in the buffer are locked into physical memory.
这会将所有传输逻辑全部放入 MFC 中，并让程序可以在缓冲区等待新数据的同时自由地执行其他计算任务。
This puts all of the transferring logic into the MFC, and leaves your program free to do other computational tasks while the buffer waits for new data.
通信区包含本地客户机应用程序的消息缓冲区，这些应用程序使用共享内存与数据库服务器进行通信。
The communications portion contains the message buffers for local client applications that use shared memory to communicate with the database server.
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