PHP Performance Tracking and analysis tools Xhprof installation and use

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For the local development environment, performance analysis xdebug is sufficient, but if it is an online environment, the xdebug consumption is large, the configuration is not flexible enough, so the online environment is recommended to use XHPROF for PHP performance tracking and analysis.

Let's briefly introduce the simple installation and use of xhprof today.

Installation of Xhprof

Download Xhprof, we are here to choose through the way git clone, of course you can also from http://pecl.php.net/package/x ... Download here.

cd /usr/local/src# 我自己汉化的版本git clone https://github.com/maxincai/xhgui.git# 你可以clone原版git clone https://github.com/phacility/xhprof.git

Attention:
php5.4 and above versions cannot be downloaded in pecl, not supported. Need to download hhttps://github.com/phacility/on GitHub ....

Another xhprof has not been updated for a long time, up to now does not support PHP7,PHP7 can try to use https://github.com/tideways/p ....

Installing Xhporof

cd xhprof/extension/usr/local/php5.6/bin/phpize./configure --with-php-config=/usr/local/php5.6/bin/php-config --enable-xhprofmakemake install

Finally, if a similar message appears, the compilation installation is successful

stalling shared extensions: /usr/local/php-5.6.14/lib/php/extensions/no-debug-non-zts-20131226/

Modify the configuration file /etc/php5.6.ini and add the following configuration at the end

[xhprof]extension=xhprof.soxhprof.output_dir=/data/www/xhprof/output

Reboot php-fpm after phpinfo viewing, or at the command line by php -m | grep xhprof checking whether the installation was successful.

Attention:

Need to create output_dirmkdir-p/data/www/xhprof/output

Simple usage of xhprof

Copy the downloaded xhprof to the Webroot directory, I'll take this /data/www/project-xhprof as an example

mkdir /data/www/project-xhprofcp -R /usr/local/src/xhprof/* /data/www/project-xhprof/cd /data/www/project-xhprof

Add site Configuration in Nginx

server {Listen80;        server_name Xhprof.dev; ROOT/DATA/WWW/PROJECT-XHPROF; index index.php index.html; access_log/var/log/nginx/xhprof.dev.log main; error_log/var/log/nginx/xhprof.dev.log.err DEBUG; rewrite_log on; location ~* \.php$ {include Fastcgi_params; fastcgi_param script_filename  $document _root $fastcgi _script_name; fastcgi_pass unix:/var/run/php5.6-fpm.sock; fastcgi_index index.php;}          

Restart Nginx, then use http://xhprof.dev/examples/sample.php , can see some output, and prompt by access to Http://<xhprof-ui-address& View the results. Next visit http://xhprof.dev/xhprof_html/to see the saved results, listing the calls to all functions and the time spent.

Analyze the sample code sample.php , the key code:

<?php// 开始分析xhprof_enable();// 运行一些函数foo();// 停止分析，得到分析数据$xhprof_data = xhprof_disable();

$xhprof_dataAll the function call time and CPU memory consumption are recorded in the program running, the parameters which can be controlled by xhprof_enable the parameter are recorded, and the parameters currently supported are:

• Hprof_flags_no_builtins skips all built-in (internal) functions.

• Adds CPU data to the performance data of the XHPROF_FLAGS_CPU output.

• Adds memory data to the performance data of the xhprof_flags_memory output.

The subsequent processing has nothing to do with the xhprof extension, which is to write a storage class XHProfRuns_Default , $xhprof_data serialize and save to a directory, you can output the XHProfRuns_Default(__DIR__) results to the current directory, if not specified will be read php.ini in the configuration file xhprof.output_dir , still not specified will be output to /tmp.

xhprof_html/index.phpOrganize and visualize the results of the records, which are listed in the default UI:

• Funciton Name: Name of function

• Calls: Number of calls

• Incl. Wall time (MICROSEC): function runtime (including child functions)

• iwall%: Function run time (including sub-function) percentage

• Excl. Wall time (MICROSEC): function runtime (excluding child functions)

• ewall%: Function run time (excluding child functions)

In the xhprof_html/index.php can also see [View Full Callgraph] links, click can draw a visualization of the performance analysis diagram, if you click on the error, may be a lack of dependency graphviz ,
Graphviz is a tool for drawing graphics that gives you a more intuitive view of performance bottlenecks.

http://www.graphviz.org/pub/graphviz/stable/SOURCES/graphviz-2.24.0.tar.gzcd graphviz-2.24.0./configuremake && make install

or install it directly using Yum

install -y libpngyum install -y graphviz

At this point, you can see an effect similar to the following

Elegant access to existing projects

With these introductions, we can actually integrate the xhprof into any of our existing projects, and most of the MVC frameworks now have a unique portal file that only needs to be injected with the XHPROF code at the beginning of the portal file:

<?php//开启xhprofxhprof_enable(XHPROF_FLAGS_MEMORY | XHPROF_FLAGS_CPU);//在程序结束后收集数据register_shutdown_function(function() { $xhprof_data = xhprof_disable(); //让数据收集程序在后台运行 if (function_exists(‘fastcgi_finish_request‘)) { fastcgi_finish_request(); } //保存xhprof数据 ...});

We can't add all the places we need to analyze, but it's unavoidable to modify the source code of the project, in fact, PHP itself provides a better way to inject, such as to save the above logic /data/www/xhprof/inject.php , and then modify the configuration in the PHP configuration file auto_prepend_file

auto_prepend_file = /data/www/xhprof/inject.php

For Apache servers, add the following code:

php_admin_value auto_prepend_file "/data/www/xhprof/inject.php"

For Nginx server, add the following code to the server configuration:

fastcgi_param PHP_VALUE "auto_prepend_file=/data/www/xhprof/inject.php";

This allows all PHP request files to be automatically injected into /data/www/xhprof/inject.php the file, which is less intrusive and enables site-based injection.

More beautiful data show Xhgui

After injecting the code we also need to implement the UI to save the XHPROF data and display the data, the existing two more popular two wheels are Xhprof.io and Xhgui two items are similar, but in a comprehensive comparison xhprof.io of years of disrepair, but xhgui also more active, the UI interface is relatively more beautiful , I chose xhgui to show the data here.

Installing Xhgui

• Clone code from GitHub to the site Directory/data/www/project-xhgui

/data/www/project-xhguicd /data/www/project-xhguigit clone https://github.com/perftools/xhgui.git ./

• Set permissions on the cache directory to allow Nginx to create files

chmod -R 777

• Launch the mongodb instance, if MongoDB does not use the default port and configuration, or has the use of security authentication, just need to modify config/config.php the relevant configuration, we use the default configuration, it is not modified.

• To improve MongoDB performance, you can run the following command to add an index:

$/usr/local/mongodb/bin/mongo> Use Xhprofdb. Results.ensureindex ({ "Meta.) SERVER. Request_time ':-1}) Db.results.ensureindex ({" Profile.main (). WT ':-1} ) Db.results.ensureindex ({" Profile.main (). Mu ':-1}) Db.results< Span class= "Hljs-selector-class" >.ensureindex ({ ' Profile.main (). CPU ':-1}" Db.results.ensureIndex ({ Span class= "hljs-string" > ' Meta.url ': 1})       

• Install mongodb php extension

  wget http://pecl.php.net/get/mongodb-1.1.9.tgztar zxvf Mongodb-1.1.9.tgzcd mongodb-1.1< Span class= "Hljs-number" >.9/usr/local/php5.6/bin/phpize./configure--with-php-config=/usr/local/ Php5.6/bin/php-configmake && make Installvim Span class= "Hljs-meta-keyword" >/etc/php5.6.ini# added at the end of the file [MONGO] Extension=mongo.so# see if installation succeeded Php-m | grep mongo# Restart Php-fpm/etc/init.d/php5.6-fpm restart     

• Run the Xhgui installation script. The installation script will install Xhgui dependent dependencies through composer.

install.php# 如果上面的命令执行报错，则执行下面的命令composer install

• Configure the Web server, here we take nginx as an example

server {Listen80;server_name Xhgui.dev;Root/data/www/project-xhgui/webroot;Index index.php index.html;Access_log/var/log/nginx/xhgui.dev.log main;error_log/var/log/nginx/xhgui.dev.log.err DEBUG; rewrite_log on; location/{try_files  $uri Span class= "hljs-variable" > $uri//index.php?  $uri & $args;} location ~* \.php$ {include Fastcgi_params; fastcgi_param script_filename  $document _root $fastcgi _script_name; fastcgi_pass unix:/var/run/php5.6-fpm.sock; fastcgi_index index.php;}          

After the configuration is complete, restart Nginx, http://xhgui.dev/ then open, you can see a page similar to the following

Modify /etc/php5.6.ini The auto_prepend_file configuration to complete the Xhgui access

auto_prepend_file = /data/www/project-xhgui/external/header.php

Specific use of Xhgui recently run

You can also search by time range and the requested address

Can be sorted by execution time, CPU time, memory consumption

You can click on an address to see the latest trends in this address

A run-time detail

Run details of a function

One-run function call graph

One-run flame diagram

Compare multiple Requests

Add Observation function

PHP Performance Tracking and analysis tools Xhprof installation and use