How to install php7 and perform performance test using yum

How to use yum Mode of installation PHP7 And performance test

Today, I'd like to share with you how to use yum Mode of installation PHP7 And the relevant knowledge points of performance testing , Detailed content , Clear logic , I believe most people still know too much about this knowledge , So share this article for your reference , I hope you will gain something after reading this article , Now let's take a look .

PHP7 And HHVM

For ordinary PHP Website , Mainly IO intensive , The bottleneck is MySQL On top of the data , Don't show PHP Performance disadvantages . But in terms of Intensive Computing C、C++、Java This statically compiled language is dozens or even hundreds of times worse . If in PHP A more complex framework is used in the development , Such as symfony, Program performance will decline significantly . in fact ,PHP The original design of the language , It is not used to solve computing intensive application scenarios . We can roughly understand it as ,PHP In order to improve development efficiency , At the expense of execution efficiency .

but PHP More popular , Such as Sina Weibo 、Facebook Most programs of this large website use PHP Written , That is, in this large-scale application ,PHP Low performance shows up .Facebook Many early codes used PHP To develop , however , With the rapid development of business ,PHP Execution efficiency is becoming more and more obvious . To optimize execution efficiency ,Facebook stay 2008 It's been in use since HipHop, This is a kind of PHP Execution engine , Initially, it was to make Fackbook A large number of PHP The code to C++, To improve performance and save resources . Use HipHop Of PHP The performance of the code has been improved several times . later ,Facebook take HipHop Open source platform , Gradually develop into the present HHVM.HHVM To replace PHP The engine used by itself Zend Engine. It is said that the performance has been improved 70%. Of course PHP Officials also know PHP The biggest short board , So it follows PHP7 project , Mainly refactored Zend Engine engine .

PHP7 The most significant change is the great improvement of performance , Is close to Facebook Developed PHP Execution engine HHVM. stay WordPress Benchmark performance test , Velocity ratio 5.6 The version should be fast 2~3 times , Greatly reduce memory consumption .PHP7 There are also some changes in language , For example, add a return type declaration 、 Some new reserved keywords are added . On the safety side , In addition to the PHP safe mode , Add magic quotes, etc . More Than This , The new version also supports 64 position , And include the latest version Zend engine . Actually PHP7 The performance of in real scenes has indeed been compared with HHVM Quite a , In some scenes, it even exceeds HHVM. but HHVM The operation and maintenance of is complex , It's a multithreading model , This means that if a thread causes crash 了 , Then the whole service will hang up , And it will not restart automatically . In addition, it uses JIT, That means , Warm up after restart , Without preheating , Poor performance . And the debugging of multithreaded model is difficult , This is for the pursuit of stability Web For service , It's very inappropriate .

YUM install PHP7

Want to use the latest version PHP, You need to use it REMI Source ,Remi repository It contains the latest version PHP and MySQL Bag Linux Source , from Remi Provide maintenance . With this source , Use YUM Install or update PHP、MySQL Newer version .

Install the latest Remi Source automatic installation file

# CentOS 6 / RHEL 6yum install http://rpms.famillecollet.com/enterprise/remi-release-6.rpm# CentOS 7 / RHEL 7yum install http://rpms.famillecollet.com/enterprise/remi-release-7.rpm

install PHP Related components , The following is a standard installation that can be used in the production environment .

$ yum --enablerepo=remi,remi-php70 install
php \
php-cgi \
php-cli \
php-fpm \
php-common \
php-devel \
php-mysqlnd \
php-mysql \
php-sqlite3 \
php-mbstring \
php-msgpack \
php-mcrypt \
php-bcmath \
php-gd \
php-xml \
php-ldap \
php-xmlrpc \
php-opcache \
php-curl \
php-json \
php-odbc \
php-pdo \
php-bz2 \
php-xml \
php-ftp \
php-imap \
php-snmp \
php-redis \
php-memcached

see PHP edition

$ php -v
PHP 7.0.9 (cli) (built: Jul 20 2016 18:08:08) ( NTS )

start-up PHP-FPM

$ service php-fpm start

Come here ,PHP7.0 The installation is complete . If you need to use PHP Extend the functionality , Such as redis、memcached etc. , Just use YUM Can be installed , as follows ：

$ yum --enablerepo=remi,remi-php70 install php-redis php-memcached

If in REMI or EPEL The extension module you need cannot be found in the source , Then you need to compile and install manually , It's also very simple. .

Also check out PHP Module information usage php -m command .

$ php -m | grep redis
redis

Install a set of LNMP Reference resources ：LNMP Installation package deployment practice or reference PHP7.0 Version of LNMPZabbix 3.0 Installation and use details

PHP7 Performance testing

Environmental Science ：4 nucleus CPU, Memory 4G, operating system Centos 6.5.

First of all, let's say GCC Compiler recommendations , According to brother bird's suggestion , Use a new compiler , recommend GCC 4.8 above , Because only GCC 4.8 above PHP Will open Global Register for opline and execute_data Support , This will bring 5% Left right performance improvement .

Write a program （ Simple testing methods provided online ）：

The first paragraph , Generate a 60 An array of 10000 elements , By looking for key The way , To make sure key Whether there is .

$a = array();for($i=0;$i$i++){
 $a[$i] = $i;
}

foreach($a as $i)
{
array_key_exists($i, $a);
}

First of all PHP 5.3.17 edition .

[[email protected] test]# time php search_by_key.phpreal 0m0.389s
user 0m0.337s
sys  0m0.051s
[[email protected] test]# time php search_by_key.phpreal 0m0.378s
user 0m0.308s
sys  0m0.062s
[[email protected] test]# time php search_by_key.phpreal 0m0.378s
user 0m0.317s
sys  0m0.061s

The second is PHP 7.0 edition .

[[email protected] php7]# time php7 search_by_key.phpreal 0m0.082s
user 0m0.066s
sys  0m0.014s
[[email protected] php7]# time php7 search_by_key.phpreal 0m0.080s
user 0m0.058s
sys  0m0.021s
[[email protected] php7]# time php7 search_by_key.phpreal 0m0.080s
user 0m0.053s
sys  0m0.026s`

The response time is PHP7 The next run becomes the original 1/4.

Or the way above , But because the speed is slow , So it becomes a 60000 Array of elements , Find value .

$a = array();for($i=0;$i$i++){
 $a[$i] = $i;
}

foreach($a as $i)
{
array_key_exists($i, $a);
}

[[email protected] test]# time php search_by_val.phpreal 0m24.296s
user 0m24.184s
sys  0m0.025s
[[email protected] test]# time php search_by_val.phpreal 0m25.523s
user 0m25.317s
sys  0m0.026s
[[email protected] test]# time php search_by_val.phpreal 0m26.026s
user 0m25.478s
sys  0m0.092s

Waiting time , Always feel very long , Three tests , It's gone 75 A second more . below ,PHP 7 Debut .

[[email protected] php7]# time php7 search_by_val.phpreal 0m3.362s
user 0m3.323s
sys  0m0.007s
[[email protected] php7]# time php7 search_by_val.phpreal 0m3.266s
user 0m3.251s
sys  0m0.004s
[[email protected] php7]# time php7 search_by_val.phpreal 0m3.290s
user 0m3.275s
sys  0m0.006s

Is there any ！ The speed increased by nearly 7 times .

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