software disk cache buffer [计] 软件磁盘高速缓冲器
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。
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。
Writes Cache: Parentage of time that a page was written to the buffer pool but not to disk.
Writes Cache：页面写到缓冲区池(而不是磁盘)的次数百分比。
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