ab压测参数化，可以同时执行多条

#!/bin/sh 

#set -x

concus=( 100 1000 2000 3000 4000 50000 60000 7000 80000 9000 10000 )

#echo ${concu[@]};

for concu in "${concus[@]}"

do

    (/usr/sbin/ab -n 10000 -c $concu http://... >> /var/webdata)& #1

    (/usr/sbin/ab -n 10000 -c $concu http://.. >> /var/webdata)& #2

   (/usr/sbin/ab -n 10000 -c $concu http://... >> /var/webdata)& #3

   (/usr/sbin/ab -n 10000 -c $concu http://... >> /var/webdata)& #4

    wait

done