Installation and use of XHProf (PHP performance testing artifact)

XHProf是Facebook开发的性能调试工具，帮助我们的PHP程序性能调优，更加健壮。XHProf安装和使用方法将在本章讲解。XHProf是PHP的PECL扩展。没有XDeBug那些耗费资源，更加的小巧。 流程：程序开头打点，结尾打点。那么XHProf机会记录在两个点之间的所有代码响应时所耗费的时间、内存、CPU等各项指标，我们也可以知道一次请求调用了多少次MySQL，多少次Memcache，更加直观的指明优化道路。 安装： <precourier new white-space:pre-wrap padding:9.5px margin-top:0px margin-bottom:10px line-height:1.42857 word-break:break-all word-wrap:break-word border:1px solid rgb background-color:rgb>------------下载并编译PHP-XHProf源码------------ wget http://pecl.php.net/get/xhprof-0.9.4.tgz tar -zxvf xhprof-0.9.4.tgz cd xhprof-0.9.4 cd extension phpize ./configure --enable-xhprof make make test sudo make install ------------修改php.ini--------------- sudo vim /etc/php.ini #在php.ini最下方加入以下： extension=xhprof.so xhprof.output_dir="/var/www/xhprof" -----------重启Apache-------------- sudo apache restart Enter the installation package folder you just decompressed, and copy xhprof_lib and xhprof_html to the project directory. Next, create a header file head.php, which is the beginning of the two dots: <precourier new white-space:pre-wrap padding:9.5px margin-top:0px margin-bottom:10px line-height:1.42857 word-break:break-all word-wrap:break-word border:1px solid rgb background-color:rgb>//head.php <?php if(extension_loaded('xhprof')){ //载入下载的XHPROF包中的2个文件夹 include_once 'xhprof_lib/utils/xhprof_lib.php'; include_once 'xhprof_lib/utils/xhprof_runs.php'; xhprof_enable(XHPROF_FLAGS_CPU &#43; XHPROF_FLAGS_MEMORY); } . Then create a bottom file foot.php, which is the last of the two dots: //foot.php save_run($xhprofData, $ns); //前端展示库的URL $url = 'http://localhost/xhprof_html/index.php'; $url .= '?run=%s&source=%s'; //变量替换 $url = sprintf($url, $runId, $ns); //输入URL echo '查看结果'; } . The last step: dotting. Now we create a test file index.php. Test my big Hello World. //index.php auto_prepend_file = /var/www/head.php auto_append_file = /var/www/foot.php in php.ini or add php_value auto_prepend_file = /var/www/head.php php_value auto_append_file = /var/www/foot.php in .htaccess. Error: 1. When clicking [View Full Callgraph] to view the picture, an error is reported: failed to execute cmd: "dot -Tpng". stderr: `sh: dot: command not found`. Reason: Reason: The graphical tool is not installed Solution: //红帽系列 yum install graphviz //Ununtu apt-get install graphviz //OS X brew install graphviz

The above introduces the installation and use of XHProf (PHP performance testing artifact), including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.