性能测试是软件测试中很重要的工程工程，有时候我们需要测试的一项内容便是web页面响应时间，httping就是这样一种专门用来测试web页面响应时间的开源软件。
在FreeBSD下安装
#cd /usr/ports/net/httping #make install clean #rehash
用法如下
#httping -h
httping: option requires an argument -- h HTTPing v1.2.6, (C) 2003-2008 folkert@vanheusden.com SSL support included
-g url url (e.g. -g http://localhost/) -h hostname hostname (e.g. localhost) -p portnr portnumber (e.g. 80) -x host:port hostname portnumber of proxyserver -c count how many times to connect -i interval delay between each connect -t timeout timeout (default: 30s) -s show statuscodes -S split time in connect-time and processing time -G do a GET request instead of HEAD (read the contents of the page as well) -b show transfer speed in KB/s (use with -G) -B like -b but use compression if available -L x limit the amount of data transferred (for -b) to 'x' (in bytes) -X show the number of KB transferred (for -b) -l connect using SSL -z show fingerprint (SSL) -f flood connect (no delays) -a audible ping -m give machine parseable output (see also -o and -e) -o rc,rc,... what http results codes indicate 'ok' coma seperated WITHOUT spaces inbetween default is 200, use with -e -e str string to display when http result code doesn't match -I str use 'str' for the UserAgent header -R str use 'str' for the Referer header -r resolve hostname only once (usefull when pinging roundrobin DNS: also takes the first DNS lookup out of the loop so that the first measurement is also correct) -n warn,crit Nagios-mode: return 1 when avg. response time >= warn, 2 if >= crit, otherwhise return 0 -N x Nagios mode 2: return 0 when all fine, 'x' when anything failes -y ip[:port] bind to ip-address (and thus interface) [/port] -q quiet, only returncode -V show the version
每一个选项都有注释 比较好懂
下面就用他来测试本地到sina的页面响应时间吧 由于网络延时 堵塞等原因 可能出现不稳定的结果 测试10次取平均值
#httping -c10 -g http://www.sina.com.cn
PING www.sina.com.cn:80 (http://www.sina.com.cn): connected to www.sina.com.cn:80, seq=0 time=8.76 ms connected to www.sina.com.cn:80, seq=1 time=4.81 ms connected to www.sina.com.cn:80, seq=2 time=5005.72 ms connected to www.sina.com.cn:80, seq=3 time=6204.22 ms connected to www.sina.com.cn:80, seq=4 time=5.45 ms connected to www.sina.com.cn:80, seq=5 time=5.63 ms connected to www.sina.com.cn:80, seq=6 time=7.44 ms connected to www.sina.com.cn:80, seq=7 time=5006.06 ms connected to www.sina.com.cn:80, seq=8 time=5.16 ms connected to www.sina.com.cn:80, seq=9 time=5.01 ms --- http://www.sina.com.cn ping statistics --- 10 connects, 10 ok, 0.00% failed round-trip min/avg/max = 4.8/1625.8/6204.2 ms
平均值为1625.8ms，也就是1.63s
如果是测试本网段的某个主机，则测试结果就比较可以信任了
#httping -c10 -g http://www.linuxidc.com
PING www.linuxidc.com:80 (http://www.linuxidc.com): connected to www.linuxidc.com:80, seq=0 time=17.11 ms connected to www.linuxidc.com:80, seq=1 time=23.52 ms connected to www.linuxidc.com:80, seq=2 time=18.72 ms connected to www.linuxidc.com:80, seq=3 time=19.37 ms connected to www.linuxidc.com:80, seq=4 time=107.02 ms connected to www.linuxidc.com:80, seq=5 time=19.70 ms connected to www.linuxidc.com:80, seq=6 time=31.35 ms connected to www.linuxidc.com:80, seq=7 time=21.85 ms connected to www.linuxidc.com:80, seq=8 time=19.67 ms connected to www.linuxidc.com:80, seq=9 time=19.52 ms --- http://www.linuxidc.com ping statistics --- 10 connects, 10 ok, 0.00% failed round-trip min/avg/max = 17.1/29.8/107.0 ms
测试结果出来了 最小web页面响应时间：17.1 ms 平均web页面响应时间：29.8 ms 最大web页面响应时间：107.0 ms
一般来说 对我们有意义的数据是是平均值
可以用shell直接取到这个值得
#httping -c5 -g http://www.linuxidc.com | tail -n1 | awk '{print $4}' | cut -d/ -f2
还可以配合shell和rrdtool可以画出一张完美的web响应时间图来，还不错，^_^^_^
