slabtop命令是以实时的方式显示内核slab缓冲区的细节信息，是linux自带的命令

[root@k8s-master ~]# slabtop --help

Usage:
 slabtop [options]

Options:
 -d, --delay <secs>  delay updates
 -o, --once          only display once, then exit
 -s, --sort <char>   specify sort criteria by character (see below)

 -h, --help     display this help and exit
 -V, --version  output version information and exit

The following are valid sort criteria:
 a: sort by number of active objects
 b: sort by objects per slab
 c: sort by cache size
 l: sort by number of slabs
 v: sort by number of active slabs
 n: sort by name
 o: sort by number of objects (the default)
 p: sort by pages per slab
 s: sort by object size
 u: sort by cache utilization

        -d        每n秒更新一次显示信息，默认为3秒

        -s        指定排序标准进行排序

        -o        显示一次后退出