!bin/bash

所以主机，以空格分隔

ALL_HOSTS=(IP 地址 IP 地址)

for host in ${ALL_HOSTS[*]}
do
{
start_time=$(date +'%s')
ssh $host "hostname" &>/dev/null
sleep 2
stop_time=$(date +'%s')
time_consuming=$((stop_time-start_time))
echo "$host: $time_consuming" >>hostname.txt
}&
done

wait

host=$(sort -n -k 2 hostname.txt | head -1 | awk -F':' '{print $1}')

ssh $host "top -b -n 1"