奔歌之前先贬一贬
HHVM手动编译太不友好了，如果你本身的环境不是纯净的环境，用过yum安装过其中的一些必须要求的库的话，就不要手动编译了，各种报错让你感动。自行编译一些库的话，也有坑，一些库的版本不能低也不能高，要求实在太多了，排了两天错才搞定编译。所以强烈建议少折腾，直接用官方提供的预编译包！！！

不过还是挺令我欣喜的
简单benchmark一下,同样跑一个Typecho的话

下面是HHVM+Nginx的结果

[root@main hhvm]# ab -n 10000 test_site
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 test_site (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
^C

Server Software: Tengine/2.0.2
Server Hostname: test_site
Server Port: 80
Document Path: /
Document Length: 24568 bytes
Concurrency Level: 1
Time taken for tests: 230.869 seconds

Complete requests: 8646

Failed requests: 0
Write errors: 0
Total transferred: 214740702 bytes
HTML transferred: 212414928 bytes
Requests per second: 37.45 [#/sec] (mean)
Time per request: 26.702 [ms] (mean)
Time per request: 26.702 [ms] (mean, across all concurrent requests)
Transfer rate: 908.34 [Kbytes/sec] received

Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.0 0 0
Processing: 26 27 0.8 27 81
Waiting: 26 26 0.8 26 81
Total: 26 27 0.8 27 81

Percentage of the requests served within a certain time (ms)
50% 27
66% 27
75% 27
80% 27
90% 27
95% 27
98% 27
99% 28
100% 81 (longest request)

下面是Php-fpm+Nginx

[root@main hhvm]# ab -n 10000 test_site
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 test_site (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
^C

Server Software: Tengine/2.0.2
Server Hostname: test_site
Server Port: 80

Document Path: /
Document Length: 24568 bytes

Concurrency Level: 1
Time taken for tests: 475.457 seconds
Complete requests: 8475
Failed requests: 2
(Connect: 0, Receive: 0, Length: 2, Exceptions: 0)
Write errors: 0
Total transferred: 210713865 bytes
HTML transferred: 208213740 bytes
Requests per second: 17.82 [#/sec] (mean)
Time per request: 56.101 [ms] (mean)
Time per request: 56.101 [ms] (mean, across all concurrent requests)
Transfer rate: 432.79 [Kbytes/sec] received

Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.0 0 0
Processing: 56 56 0.3 56 68
Waiting: 55 56 0.3 56 67
Total: 56 56 0.3 56 68

Percentage of the requests served within a certain time (ms)
50% 56
66% 56
75% 56
80% 56
90% 56
95% 56
98% 57
99% 57
100% 68 (longest request)

测试期间，CPU占用大致相当，同样的时间HHVM几乎完成了两倍的请求
Nice!

让我奔歌一下 HHVM，实在是良器

下面是HHVM+Nginx的结果

下面是Php-fpm+Nginx