缓冲区"表示有多少RAM专用于缓存磁盘块. 缓存"类似于缓冲区"，只是这一次它缓存了来自文件读取的页面.

"Buffers" represent how much portion of RAM is dedicated to cache disk blocks. "Cached" is similar like "Buffers", only this time it caches pages from file reading.

引用来自:

• https://web.archive.org/web/20110207101856/http://www.linuxforums.org/articles/using-top-more-ficiently_89.html