http://www.php.net/manual/en/book.opcache.php

PHP 5.5.0 がリリースされた。finally や yield とか ::class によるネームスペースの解決とか楽しい部分はあれど、まー Zend OPcache は大きいよねってことで、とりあえず試しておく。

./configure に --enable-opcache を付けてビルドすればよい。簡単。 あとは php.ini に 以下を追加すると良い。ただし、 extention= ... ではなく、zend_extention= ... と書かねばならないので注意。

zend_extension=/path/to/php/extensions/no-debug-zts-20121212/opcache.so
opcache.memory_consumption=128
opcache.interned_strings_buffer=8
opcache.max_accelerated_files=4000
opcache.revalidate_freq=60
opcache.fast_shutdown=1
opcache.enable_cli=1

この状態で、 Intel Core i7 2600s と RAM 16GB , Apache 2.2.22 の環境下で http://www.mumumu.org/~cinnamon/ (WordPressカスタムサイト) に対して、以下のベンチマークを実行してみた。

ab -c 10 -n 1000 http://localhost/~cinnamon/

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 localhost (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Completed 900 requests
Completed 1000 requests
Finished 1000 requests

Server Software:        Apache/2.2.22
Server Hostname:        localhost
Server Port:            80

Document Path:          /~cinnamon/
Document Length:        15996 bytes

Concurrency Level:      10
Time taken for tests:   30.007 seconds
Complete requests:      1000
Failed requests:        969
   (Connect: 0, Receive: 0, Length: 969, Exceptions: 0)
Write errors:           0
Total transferred:      16257178 bytes
HTML transferred:       16001178 bytes
Requests per second:    33.33 [#/sec] (mean)
Time per request:       300.066 [ms] (mean)
Time per request:       30.007 [ms] (mean, across all concurrent requests)
Transfer rate:          529.09 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.3      0       4
Processing:   227  299  35.3    296     663
Waiting:      208  277  35.3    274     646
Total:        227  299  35.5    296     667

Percentage of the requests served within a certain time (ms)
  50%    296
  66%    305
  75%    311
  80%    315
  90%    329
  95%    349
  98%    387
  99%    423
 100%    667 (longest request)

PHP 5.4.16 + APC 3.1.13 では以下のようになった。ほとんど変わらない感じだ。

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 localhost (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Completed 900 requests
Completed 1000 requests
Finished 1000 requests

Server Software:        Apache/2.2.22
Server Hostname:        localhost
Server Port:            80

Document Path:          /~cinnamon/
Document Length:        15993 bytes

Concurrency Level:      10
Time taken for tests:   30.171 seconds
Complete requests:      1000
Failed requests:        965
   (Connect: 0, Receive: 0, Length: 965, Exceptions: 0)
Write errors:           0
Total transferred:      16283497 bytes
HTML transferred:       16000497 bytes
Requests per second:    33.14 [#/sec] (mean)
Time per request:       301.708 [ms] (mean)
Time per request:       30.171 [ms] (mean, across all concurrent requests)
Transfer rate:          527.06 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.1      0       2
Processing:   189  301  27.7    297     406
Waiting:      164  278  27.4    275     381
Total:        189  301  27.7    297     406

Percentage of the requests served within a certain time (ms)
  50%    297
  66%    308
  75%    315
  80%    320
  90%    336
  95%    353
  98%    371
  99%    383
 100%    406 (longest request)