Find php performance bottlenecks (xhprof)

Installation of xhprof

cd ~
git clone https://github.com/longxinH/xhprof

Install

cd xhprof/extension//usr/bin/phpize./configure --with-php-config=/usr/local/php/bin/php-config --enable-xhprof
 make && make install

Modify the php.ini file

/usr/local/php/bin/php -i | grep php.ini //find php.ini file location

Add the /etc/php.inifollowing configuration in

[xhprof]
extension=xhprof.so
xhprof.output_dir=/data/www/xhprof/save_output_dir //该目录自由定义即可,用来保存xhprof生成的源文件

After saving, restartphp-fpm

 pkill php
/usr/local/php/sbin/php-fpm

Move the relevant files into the project root directory

//切换到下载的 xhprof 目录
cp -r xhprof/xhprof_html  ROOT_PATH/
cp -r xhprof/xhprof_lib ROOT_PATH/

How to use (modified in the index.php entry file)

xhprof_enable();

//The code you need to analyze

$xhprof_data = xhprof_disable(); include_once  ROOT_PATH. '/xhprof_lib/utils/xhprof_lib.php' ;

include_once  ROOT_PATH .  '/xhprof_lib/utils/xhprof_runs.php' ;

$xhprof_runs =  new  XHProfRuns_Default();

$run_id = $xhprof_runs->save_run($xhprof_data,  "xhprof_test" );

//Save the run_id or output it with the code

View data

访问$host_url/xhprof_html/index.php来查看结果

View the graphical results

report an error

failed to execute cmd：" dot -Tpng". stderr：sh： dot：command not found

//解决方案
yum install graphviz