使用 Apache Bench 來測試 Web Server

測試環境：Ubuntu 11.04, cherokee 1.2.101

1. Stop Web Server.
       sudo /etc/init.d/cherokee stop

2. Install apache2-utils.
        sudo apt-get install apache2-utils

3. Start Web Server
        sudo /etc/init.d/cherokee start

4. 開個終端機
        ab -n400 -c400 http://server/


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 192.168.1.11 (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Finished 400 requests


Server Software:        Cherokee/1.2.101
Server Hostname:        192.168.1.11
Server Port:            80

Document Path:          /drupal/
Document Length:        7930 bytes

Concurrency Level:      400
Time taken for tests:   35.510 seconds
Complete requests:      400
Failed requests:        177
   (Connect: 0, Receive: 0, Length: 177, Exceptions: 0)
Write errors:           0
Non-2xx responses:      177
Total transferred:      1898081 bytes
HTML transferred:       1795825 bytes
Requests per second:    11.26 [#/sec] (mean)
Time per request:       35510.233 [ms] (mean)
Time per request:       88.776 [ms] (mean, across all concurrent requests)
Transfer rate:          52.20 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:       85  121  19.8    119     159
Processing:  3565 19163 7843.7  15815   35318
Waiting:     3265 18942 7782.1  15803   35299
Total:       3720 19285 7842.8  15914   35431

Percentage of the requests served within a certain time (ms)
  50%  15914
  66%  19418
  75%  25004
  80%  27121
  90%  33780
  95%  34568
  98%  35323
  99%  35392
 100%  35431 (longest request)