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PHP開啟opcache提升代碼性能

更新時間：2015年04月26日 16:25:05 投稿：hebedich

APC在PHP5.4及以下版本是性能最好的代碼緩存。不過PHP升級到5.5及以上后，APC不再有效。需要使用Zend的OpCache擴展。

配置指令如下：

[opcache]
zend_extension=opcache.so
opcache.enable_cli=1
;共享內(nèi)存大小, 這個根據(jù)你們的需求可調(diào)
opcache.memory_consumption=256   
;interned string的內(nèi)存大小, 也可調(diào)
opcache.interned_strings_buffer=8
;最大緩存的文件數(shù)目
opcache.max_accelerated_files=4000
;60s檢查一次文件更新
opcache.revalidate_freq=60
;打開快速關(guān)閉, 打開這個在PHP Request Shutdown的時候 會收內(nèi)存的速度會提高
opcache.fast_shutdown=1
;不保存文件/函數(shù)的注釋
opcache.save_comments=0

實際性能對比：

下面是實際測試中沒有開啟opcache的數(shù)據(jù)：

[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 requests
Completed 2000 requests
Completed 3000 requests
Completed 4000 requests
Completed 5000 requests
Completed 6000 requests
Completed 7000 requests
Completed 8000 requests
Completed 9000 requests
Completed 10000 requests
Finished 10000 requests

Server Software:    openresty/1.7.2.1
Server Hostname:    112.126.69.14
Server Port:      80

Document Path:     /main.php?a=Role&m=createRole
Document Length:    2 bytes

Concurrency Level:   200
Time taken for tests:  26.061 seconds
Complete requests:   10000
Failed requests:    20
  (Connect: 0, Receive: 0, Length: 20, Exceptions: 0)
Write errors:      0
Non-2xx responses:   20
Total transferred:   1713580 bytes
HTML transferred:    23520 bytes
Requests 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] received

Connection Times (ms)
       min mean[+/-sd] median  max
Connect:    2  3  3.2   2   60
Processing:  17 461 905.0  219  16496
Waiting:    17 461 904.9  219  16496
Total:     21 464 905.0  222  16502

Percentage 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)

開啟之后的數(shù)據(jù)：

[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 requests
Completed 2000 requests
Completed 3000 requests
Completed 4000 requests
Completed 5000 requests
Completed 6000 requests
Completed 7000 requests
Completed 8000 requests
Completed 9000 requests
Completed 10000 requests
Finished 10000 requests


Server Software:    openresty/1.7.2.1
Server Hostname:    112.126.69.14
Server Port:      80

Document Path:     /main.php?a=Role&m=createRole
Document Length:    2 bytes

Concurrency Level:   200
Time taken for tests:  14.237 seconds
Complete requests:   10000
Failed requests:    0
Write errors:      0
Total transferred:   1711710 bytes
HTML transferred:    20020 bytes
Requests 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] received

Connection Times (ms)
       min mean[+/-sd] median  max
Connect:    2  66 272.6   2  3005
Processing:   4 176 666.4   6  9026
Waiting:    4 163 642.8   6  9026
Total:     6 242 745.7   9  10028

Percentage 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)

以上所述就是本文的全部內(nèi)容，希望大家能夠喜歡。

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