1. 释放缓存

    sync
    echo 3 > /proc/sys/vm/drop_caches
    
  2. 排序

    ps -eo pmem,pcpu,rss,vsize,args | sort -k 1 -r | less
    
  3. 查看启动的服务

    systemctl list-unit-files --type=service --state=enabled