Table 2: The vmstat Memory Statistics Field Description Swapd The amount of virtual memory in KB currently in use. As free memory reaches low thresholds, more data is paged to the swap device. 当前虚拟内存使用的总额(单位:KB).空闲内存达到最低的阀值时,更多的数据被转换成页到交换设备中. Free The amount of physical RAM in kilobytes currently available to running applications. 当前内存中可用空间字节数. Buff The amount of physical memory in kilobytes in the buffer cache as a result of read() and write() operations. 当前内存中用于read()和write()操作的缓冲区中缓存字节数 Cache The amount of physical memory in kilobytes mapped into process address space. 当前内存中映射到进程地址空间字节数 So The amount of data in kilobytes written to the swap disk. 写入交换空间的字节数总额 Si The amount of data in kilobytes written from the swap disk back into RAM. 从交换空间写回内存的字节数总额 Bo The amount of disk blocks paged out from the RAM to the filesystem or swap device. 磁盘块页面从内存到文件或交换设备的总额 Bi The amount of disk blocks paged into RAM from the filesystem or swap device. 磁盘块页面从文件或交换设备到内存的总额