PHP开启opcache提升代码性能

配置指令如下：

[opcache]zend_extension=opcache.soopcache.enable_cli=1;共享内存大小, 这个根据你们的需求可调opcache.memory_consumption=256   ;interned string的内存大小, 也可调opcache.interned_strings_buffer=8;最大缓存的文件数目opcache.max_accelerated_files=4000;60s检查一次文件更新opcache.revalidate_freq=60;打开快速关闭, 打开这个在PHP Request Shutdown的时候 会收内存的速度会提高opcache.fast_shutdown=1;不保存文件/函数的注释opcache.save_comments=0 

实际性能对比：

下面是实际测试中没有开启opcache的数据：

[root@localhost ~]# ab -n 10000 -c 200 "http://112.126.69.14/main.php?a=Role&m=createRole"This is ApacheBench, Version 2.3 <$Revision: 655654 $>Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/Licensed to The Apache Software Foundation, http://www.apache.org/Benchmarking 112.126.69.14 (be patient)Completed 1000 requestsCompleted 2000 requestsCompleted 3000 requestsCompleted 4000 requestsCompleted 5000 requestsCompleted 6000 requestsCompleted 7000 requestsCompleted 8000 requestsCompleted 9000 requestsCompleted 10000 requestsFinished 10000 requestsServer Software:    openresty/1.7.2.1Server Hostname:    112.126.69.14Server Port:      80Document Path:     /main.php?a=Role&m=createRoleDocument Length:    2 bytesConcurrency Level:   200Time taken for tests:  26.061 secondsComplete requests:   10000Failed requests:    20  (Connect: 0, Receive: 0, Length: 20, Exceptions: 0)Write errors:      0Non-2xx responses:   20Total transferred:   1713580 bytesHTML transferred:    23520 bytesRequests per second:  383.72 [#/sec] (mean)Time per request:    521.216 [ms] (mean)Time per request:    2.606 [ms] (mean, across all concurrent requests)Transfer rate:     64.21 [Kbytes/sec] receivedConnection Times (ms)       min mean[+/-sd] median  maxConnect:    2  3  3.2   2   60Processing:  17 461 905.0  219  16496Waiting:    17 461 904.9  219  16496Total:     21 464 905.0  222  16502Percentage of the requests served within a certain time (ms) 50%  222 66%  271 75%  369 80%  412 90%  805 95%  1248 98%  2597 99%  3489 100% 16502 (longest request)

开启之后的数据：

[root@localhost ~]# ab -n 10000 -c 200 "http://112.126.69.14/main.php?a=Role&m=createRole"This is ApacheBench, Version 2.3 <$Revision: 655654 $>Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/Licensed to The Apache Software Foundation, http://www.apache.org/Benchmarking 112.126.69.14 (be patient)Completed 1000 requestsCompleted 2000 requestsCompleted 3000 requestsCompleted 4000 requestsCompleted 5000 requestsCompleted 6000 requestsCompleted 7000 requestsCompleted 8000 requestsCompleted 9000 requestsCompleted 10000 requestsFinished 10000 requestsServer Software:    openresty/1.7.2.1Server Hostname:    112.126.69.14Server Port:      80Document Path:     /main.php?a=Role&m=createRoleDocument Length:    2 bytesConcurrency Level:   200Time taken for tests:  14.237 secondsComplete requests:   10000Failed requests:    0Write errors:      0Total transferred:   1711710 bytesHTML transferred:    20020 bytesRequests per second:  702.40 [#/sec] (mean)Time per request:    284.739 [ms] (mean)Time per request:    1.424 [ms] (mean, across all concurrent requests)Transfer rate:     117.41 [Kbytes/sec] receivedConnection Times (ms)       min mean[+/-sd] median  maxConnect:    2  66 272.6   2  3005Processing:   4 176 666.4   6  9026Waiting:    4 163 642.8   6  9026Total:     6 242 745.7   9  10028Percentage of the requests served within a certain time (ms) 50%   9 66%   14 75%   99 80%  122 90%  1006 95%  1476 98%  2853 99%  3543 100% 10028 (longest request)