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 $!