**cache是高速缓存,用于CPU和内存之间的缓冲 **buffer是I/O缓存,用于内存和硬盘的缓冲* buffer 与cache 的区别 A buffer is something that has yet to be “written” to disk. A cache is something that has been “read” from the disk and stored for later use. [root@server~]# free -m total...