php 性能测试

Jun 23, 2016 pm 02:32 PM

 PHP测试方案
一、    性能测试(xhprof)
1)、安装
Wget http://pecl.php.net/get/xhprof-0.9.2.tgz
tar xzvf xhprof-0.9.2.tgz
cd xhprof-0.9.2/extension
/usr/local/php-5.3.5/bin/phpize
./configure ?with-php-config=/usr/local/php-5.3.5/bin/php-config
make && make install

2)、配置PHP
在php.ini文件中加入xhprof.so模块
extension = /usr/local/php-5.3.6/lib/php/extension/xxxx/xhprof.so

保存并关闭,然后重启PHP

把xhprof_lib和xhprof_html两个目录拷贝到网站的根目录”xxx.xxxx.com/xhprof/”下,

2、使用
在需要做性能测试的地方加入
开始:
// XHPROF_FLAGS_CPU
// XHPROF_FLAGS_MEMORY
// XHPROF_FLAGS_NO_BUILTINS 跳过内置函数
// 要设定要忽略的函数列表,可以在分析时给xhprof_enable函数 指定第二个参数[是个可选参数], 如:
xhprof_enable(XHPROF_FLAGS_MEMORY,
        array(
'ignored_functions' => array(
'call_user_func',
'call_user_func_array'
    )
    )
);

xhprof_enable(XHPROF_FLAGS_CPU + XHPROF_FLAGS_MEMORY); 
结束:
$xhprofData = xhprof_disable();
define('XHPROF_ROOT', Yii::getPathOfAlias('webroot.xhprof'));

include_once(XHPROF_ROOT . '/xhprof_lib/utils/xhprof_lib.php');
include_once(XHPROF_ROOT . '/xhprof_lib/utils/xhprof_runs.php');
$xhprofRuns = new XHProfRuns_Default();
$runId = $xhprofRuns->save_run($xhprofData, ' ');
echo "http://xxx.xxx.xxx/xhprof/xhprof_html/index.php?run={$runId}&source= ";

然后就可以根据上面的地址查看

这样就可以查看到每个函数调用所消耗的CPU、内存、执行时间等

查看单一报告:
http://xxx.xxx.xxx/xhprof/xhprof_html/index.php?run={$runId}&source=
查看对比报告:
http://xxx.xxx.xxx/xhprof/xhprof_html/index.php?run1=xxxx&run2=xxx&source=
查看汇总报告:
http://xxx.xxx.xxx/xhprof/xhprof_html/index.php?run=1,2,3&source=
加权汇总 :进一步假设,上述3个运特分别对应三种程序,p1.php,p2.php和p3.php ,通常以20%,30%,50%概率混合:要查看汇总报告所对应的加权平均数这些运行使用:
http://xxx.xxx.xxx/xhprof/xhprof_html/index.php?run=1,2,3 &wts=20,30,50&source=


二、    压力测试
命令:
ab ?c 256 ?n 100000 http://iploc.kuaibo.com/ip/weather

-c  并发数
-n  总请求次数
-t  总请求时间,超过5万次结束


服务器压力测试参考数据:
1、    CPU (nginx、PHP、MYSQL)   top
2、    内存(nginx、PHP、MYSQL)    free
3、    队列
4、    I/O
5、    网络流量


两种测试结合进行, 压力测试由低到高, 并且观察服务器的资源占用情况。 在压力测试的同时, 使用性能测试工具xhprof结合起来测试, 看看瓶颈是在哪里, 什么地方比较占用资源等。

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