详解PHP7开启OPcache和Swoole性能的提升对比
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：
<?phpnamespace AppHttpControllers; 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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