vmstate 命令
Procs r: The number of processes waiting for run time. 等待CPU的进程数 b: The number of processes in uninterruptible sleep. 不可中断睡眠的进程数 Memory swpd: the amount of virtual memory used. free: the amount of idle memory. buff: the amount of memory used as buffers. cache: the amount of memory used as cache. inact: the amount of inactive memory. (-a option) active: the amount of active memory. (-a option) Swap si: Amount of memory swa