async_php

Test performance benefit by moving blocking I/O calls out of PHP.

DEPENDENCY

ngx_lua module - http://openresty.org latest stable release

php_fpm - http://php.net latest stable release

php_curl - built-in

php_apc - pecl install apc

DUMMY BACKEND

1ms latency: http://hsf1.test.cnz.alimama.com/1ms.php
10ms latency: http://hsf1.test.cnz.alimama.com/10ms.php
30ms latency: http://hsf1.test.cnz.alimama.com/30ms.php
<?php
     usleep(1000 * 30);
     for ($i=0;$i<1000;$i++)
        echo $i;

TEST

启动 nginx： bin/restart_nginx.sh

启动 php_fpm: /usr/local/sbin/php_fpm

RESULT

backend with 1ms latency QPS: PHP with curl - 800, async PHP - 900

backend with 10ms latency QPS: PHP with curl - 300, async PHP - 500

backend with 30ms latency QPS: PHP with curl - 150, async PHP - 300

backend with 10ms latency in detail

ab -n 1000 -c 100 http://kmaster2.sds.cnz.alimama.com/curl.php

Server Software:        ngx_openresty
Server Hostname:        kmaster2.sds.cnz.alimama.com
Server Port:            80

Document Path:          /curl.php
Document Length:        2919 bytes

Concurrency Level:      100
Time taken for tests:   3.192 seconds
Complete requests:      1000
Failed requests:        0
Write errors:           0
Total transferred:      3067000 bytes
HTML transferred:       2919000 bytes
Requests per second:    313.28 [#/sec] (mean)
Time per request:       319.206 [ms] (mean)
Time per request:       3.192 [ms] (mean, across all concurrent requests)
Transfer rate:          938.30 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        3    6   4.2      5      24
Processing:    27  299  55.9    284     427
Waiting:       27  298  56.0    284     426
Total:         33  305  55.4    290     450

Percentage of the requests served within a certain time (ms)
  50%    290
  66%    301
  75%    354
  80%    357
  90%    373
  95%    390
  98%    419
  99%    422
 100%    450 (longest request)	

ab -n 1000 -c 100 http://kmaster2.sds.cnz.alimama.com/lua
 
Server Software:        ngx_openresty
Server Hostname:        kmaster2.sds.cnz.alimama.com
Server Port:            80

Document Path:          /lua
Document Length:        3126 bytes

Concurrency Level:      100
Time taken for tests:   1.975 seconds
Complete requests:      1000
Failed requests:        0
Write errors:           0
Total transferred:      3272000 bytes
HTML transferred:       3126000 bytes
Requests per second:    506.41 [#/sec] (mean)
Time per request:       197.469 [ms] (mean)
Time per request:       1.975 [ms] (mean, across all concurrent requests)
Transfer rate:          1618.13 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        3    7   4.4      5      24
Processing:    22  180  29.9    188     217
Waiting:       22  179  29.9    188     217
Total:         30  187  28.2    194     241

Percentage of the requests served within a certain time (ms)
  50%    194
  66%    197
  75%    200
  80%    203
  90%    206
  95%    213
  98%    219
  99%    224
 100%    241 (longest request)