HipHop for PHP的apache基准测试

Question

最近我用Apache Benchmark(ab)完成了HipHop for PHP的基准测试.

我期望PHP的结果HipHop比普通的apache2 web服务器运行得更快,但结果却是另一种方式.

我用这个脚本来测试服务器,

<?php
  $i=0;
  while($i < 1000000){
    echo 'Welcome to HipHop for PHP<br />';
    $i++;
  }
?>

我用这个ab命令来测试:

ab -n 500 -c 5 [URL]

我用这个命令编译:

hphp/hphp hiphop1.php -k 1 -l 3

apache2服务器的基准测试结果:

kiddo@kiddo-VirtualBox:~/dev/hiphop-php/doc$ ab -n 500 -c 5 http://localhost/hiphop1.php
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
Finished 500 requests


Server Software:        Apache/2.2.16
Server Hostname:        localhost
Server Port:            80

Document Path:          /hiphop1.php
Document Length:        31000000 bytes

Concurrency Level:      5
Time taken for tests:   71.024 seconds
Complete requests:      500
Failed requests:        0
Write errors:           0
Total transferred:      15500095500 bytes
HTML transferred:       15500000000 bytes
Requests per second:    7.04 [#/sec] (mean)
Time per request:       710.240 [ms] (mean)
Time per request:       142.048 [ms] (mean, across all concurrent requests)
Transfer rate:          213122.37 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.9      0      19
Processing:   505  708  61.1    694     960
Waiting:        0    0   3.3      0      67
Total:        505  708  61.1    695     960

Percentage of the requests served within a certain time (ms)
  50%    695
  66%    714
  75%    729
  80%    736
  90%    781
  95%    857
  98%    898
  99%    938
 100%    960 (longest request)

和HipHop for PHP的基准:

kiddo@kiddo-VirtualBox:~/dev/hiphop-php/doc$ ab -n 500 -c 5 http://localhost:8080/hiphop1.php
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
Finished 500 requests


Server Software:        
Server Hostname:        localhost
Server Port:            8080

Document Path:          /hiphop1.php
Document Length:        31000000 bytes

Concurrency Level:      5
Time taken for tests:   294.546 seconds
Complete requests:      500
Failed requests:        0
Write errors:           0
Total transferred:      15500052500 bytes
HTML transferred:       15500000000 bytes
Requests per second:    1.70 [#/sec] (mean)
Time per request:       2945.455 [ms] (mean)
Time per request:       589.091 [ms] (mean, across all concurrent requests)
Transfer rate:          51390.26 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   1.6      0      20
Processing:  1515 2941 579.7   2919    4734
Waiting:     1452 2626 532.5   2609    4135
Total:       1515 2941 579.7   2919    4734

Percentage of the requests served within a certain time (ms)
  50%   2919
  66%   3147
  75%   3334
  80%   3448
  90%   3704
  95%   3937
  98%   4223
  99%   4394
 100%   4734 (longest request)

问题是,为什么HipHop在我的基准测试中运行速度较慢？

脚本测试有什么问题吗？

Answer 1

PHP hip-hop 可以加快 PHP 代码执行速度，这是一个常见的误解。不一定。Facebook 开发它是因为他们的整个平台构建在几个 PHP 文件中，而这些文件执行得非常频繁并且非常庞大，以至于使用纯 PHP 效率很低。

使用 Hip-Hop 只是在 PHP 的执行中添加一个步骤，您永远不应该将 PHP Hip-Hop 用于这样的“简单”代码。

此外，PHP 还执行一些在 C+ 中通过 PHP 脚本本机执行的函数。