详解PHP7开启OPcache和Swoole性能的提升对比

小蚂蚁

laravel作为最热门的php框架之一，广受认可与欢迎。同时由于集成度很高，每次运行都加载了大量文件，加之使用了大量的闭包、魔术方法，导致laravel框架很重，并发性能极差。OPcache和Swoole都是php的扩展，这次旨在比较这两个扩展分别开启后对Laravel应用的加速效果。                                                                           
前期准备
测试所用的主机为虚拟机，虚拟机配置在双核4GB的个人电脑中。虚拟机系统为linux，http服务器采用nginx，用lnmp脚本安装nginx、mysql、php。Laravel框架为7.X版本。
配置站点，在nginx的server块中配置虚拟主机
server{ listen 80; root "/vagrant/www/laravel7/public"; server_name test.laravel.com; index index.html index.php; location / { try_files $uri $uri/ /index.php?$args; } location ~ \.php$ { fastcgi_pass unix:/tmp/php-cgi.sock; fastcgi_index index.php; fastcgi_split_path_info ^(.+\.php)(.*)$; fastcgi_param PATH_INFO $fastcgi_path_info; fastcgi_param PATH_TRANSLATED $document_root$fastcgi_path_info; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } }
编辑/etc/hosts文件，在新行添加127.0.0.1  test.laravel.com
打开项目，新建控制器TestController，在里面新建一个test方法：

<?php
namespace App\Http\Controllers;
 
 
 
class TestController extends Controller
{
  public function test()
  {
  return 123;
  }
 
  
}

在routes/api.php中注册一个路由：

Route::get('test', 'TestController@test');

在app/Http/Kernel文件中，关掉频率限制中间件throttle。

不开启opcache和laravel
修改php-fpm.conf文件，修改pm和pm.max_children 配置，pm设置为static，pm.max_children设置为50，以获得较好的并发性能。
[www] listen = /tmp/php-cgi.sock listen.backlog = -1 listen.allowed_clients = 127.0.0.1 listen.owner = www listen.group = www listen.mode = 0666 user = www group = www pm = static pm.max_children = 50 pm.start_servers = 10 pm.min_spare_servers = 10 pm.max_spare_servers = 20 request_terminate_timeout = 100 request_slowlog_timeout = 0 slowlog = var/log/slow.log
重启fpm后用ab压测：ab -n 1000 -c 100 http://test.laravel.com/api/test

Server Software:    nginx
Server Hostname:    test.laravel.com
Server Port:      80
Document Path:      /api/test
Document Length:    3 bytes
Concurrency Level:    100
Time taken for tests:   148.306 seconds
Complete requests:    1000
Failed requests:    0
Total transferred:    253000 bytes
HTML transferred:     3000 bytes
Requests per second:  6.74 [#/sec] (mean)
Time per request:     14830.553 [ms] (mean)
Time per request:     148.306 [ms] (mean, across all concurrent requests)
Transfer rate:      1.67 [Kbytes/sec] received

此时的并发大约为为 7 qps

开启OPcache
在配置文件php.ini文件中开启opcache
zend_extension="opcache.so" opcache.enable=1 opcache.memory_consumption=128 opcache.max_accelerated_files=10000 opcache.revalidate_freq=60 opcache.fast_shutdown=1 opcache.enable_cli=1 opcache.interned_strings_buffer=8
重启fpm后，用ab压测：ab -n 1000 -c 100 http://test.laravel.com/api/test

Server Software:    nginx
Server Hostname:    test.laravel.com
Server Port:      80
Document Path:      /api/test
Document Length:    4 bytes
Concurrency Level:    100
Time taken for tests:   11.006 seconds
Complete requests:    1000
Failed requests:    0
Total transferred:    254000 bytes
HTML transferred:     4000 bytes
Requests per second:  90.86 [#/sec] (mean)
Time per request:     1100.590 [ms] (mean)
Time per request:     11.006 [ms] (mean, across all concurrent requests)
Transfer rate:      22.54 [Kbytes/sec] received
Connection Times (ms)
        min  mean[+/-sd] median   max
Connect:    0  1   4.3    0    16
Processing:   409 1069 152.0   1092  1414
Waiting:    408 1069 152.0   1092  1414
Total:    424 1070 149.6   1092  1414
Percentage of the requests served within a certain time (ms)
  50%   1092
  66%   1126
  75%   1149
  80%   1162
  90%   1203
  95%   1242
  98%   1280
  99%   1309
 100%   1414 (longest request)

此时的达到了 90qps，性能是未开启时的 10  倍以上！。

使用swoole加速包
开源的laravel-swoole加速包
在项目目录下运行composer命令安装；在nginx的配置文件中配置，将请求转发到swoole监听的端口。
用 ab 压测 ： ab -n 1000 -c 100 http://test.laravel.com/api/test

Server Software:    nginx
Server Hostname:    test.laravel.com
Server Port:      80
Document Path:      /api/test
Document Length:    4 bytes
Concurrency Level:    100
Time taken for tests:   1.158 seconds
Complete requests:    1000
Failed requests:    0
Total transferred:    225000 bytes
HTML transferred:     4000 bytes
Requests per second:  863.46 [#/sec] (mean)
Time per request:     115.813 [ms] (mean)
Time per request:     1.158 [ms] (mean, across all concurrent requests)
Transfer rate:      189.72 [Kbytes/sec] received

速度起飞！达到了800qps！
也就是一百多倍？

总结
当然这只是一个比较简单的测试，但是总的来说opcache扩展和swoole扩展对php脚本性能的提升还是很明显的。
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