对软件进行 性能测试，需要写一个脚本来作驱动。

基本要求如下：

（1）每秒钟能并发M次；

（2）可以连续不断地执行N秒；

#需要并发执行的脚本 driver.pl

#每秒并发执行M次的脚本 MperSec.ksh

#! /usr/bin/ksh

# usage: MperSec.ksh M

MperSec=                             # is how many times per second 

time{
        for ((i=1;i<=$MperSec;i++))
        do 
              driver.pl &             # & means let the script run in background
        done

        wait

}

#连续执行N秒的脚本 NSecs.ksh

#! /usr/bin/ksh

#usage: NSecs.ksh N M

NSecs=

MperSecond=

for ((i=1;i<=$NSecs;i++)) 
do 
        MperSec.ksh&             # & means let the script run in background

        sleep 1  
done

#How to invoke the whole test process

 NSecs.ksh 7200 6 |tee test.log

#----------------经过测试的版本----------------------------------

# Solaris 9 ksh

#! /usr/bin/ksh

# usage: MperSec.ksh M

MperSec=""                             # is how many times per second

function func
{
        i=1
        while [ "$i" -lt "$MperSec" ]
        do
              driver.pl &             # & means let the script run in background
              i=$(($i+1))
        done

        wait
}

time func
#(time func) 2>&1|awk '/real/{print }'

#! /usr/bin/ksh

# usage: MperSec.ksh M

MperSec=""                             # is how many times per second

function func
{
        i=1
        while [ "$i" -lt "$MperSec" ]
        do
              ipqueryClient.pl &             # & means let the script run in background
              i=$(($i+1))
        done

        wait
}

time func
#(time func) 2>&1|awk '/real/{print }'

#------------改进方向----------------------

如果让这些driver.pl在一秒内均匀的触发而不是一下子M个全在后台起来

参考：

#--------------------------------------------------------------------------------

start=$(date +%s)
dd if=/dev/hdisk2   of=/dev/null bs=8k count=10000 &
dd if=/dev/hdisk2   of=/dev/null bs=8k count=10000 &
.
.
.
wait
end=$(date +%s)
echo $(($end-$start))

只能算到秒

#--------------------------------------------------------------------------------

time  {
dd if=/dev/hdisk2   of=/dev/null bs=8k count=10000 &
dd if=/dev/hdisk2   of=/dev/null bs=8k count=10000 &
.
.
.
wait ;
}

#--------------------------------------------------------------------------------

linux下用proc信息手工计算 单位是 1/100秒

代码:

#!/bin/bash start=$(awk '{print }' /proc/$$/stat) dd if=/dev/hdisk2   of=/dev/null bs=8k count=10000 & dd if=/dev/hdisk2   of=/dev/null bs=8k count=10000 & . . . wait sleep 3 & end=$(awk '{print }' /proc/$!/stat) echo $(($end-$start)) kill -9 $!