缓冲区"表示 RAM 的多少部分专用于缓存磁盘块.Cached"和Buffers"类似，只是这次它缓存了文件读取的页面.

"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.

引自:

• https://web.archive.org/web/20110207101856/http://www.linuxforums.org/articles/using-top-more-efficiently_89.html