proc_vmstat_watch watch periodically /proc/vmstat 使用方法 [postgres@db03 ~]$ perl ./vmstat_pgscan.pl 1 pgscan_direct_dma,pgscan_direct_dma32,pgscan_direct_normal,pgscan_direct_movable 0,0,0,0 0,0,0,0 0,0,0,0