ApacheBench

I just discovered an interesting tool that comes pre-installed on OSX. ApacheBench is a great tool for measuring site performance. Here is an example usage along with the output:

dleuck$ ab -n 50 -t 50 -c 3 http://www.ikayzo.com/
This is ApacheBench, Version 1.3d <$Revision: 1.73 $> apache-1.3

Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd

http://www.zeustech.net

Copyright (c) 2006 The Apache Software Foundation,

http://www.apache.org



Benchmarking www.ikayzo.com (be patient)

Finished 240 requests

Server Software:        Apache/2.0.54                                     

Server Hostname:        www.ikayzo.com

Server Port:            80



Document Path:          /

Document Length:        11509 bytes



Concurrency Level:      3

Time taken for tests:   50.138 seconds

Complete requests:      240

Failed requests:        0

Broken pipe errors:     0

Total transferred:      2844488 bytes

HTML transferred:       2763271 bytes

Requests per second:    4.79 [#/sec] (mean)

Time per request:       626.72 [ms] (mean)

Time per request:       208.91 [ms] (mean, across all concurrent requests)

Transfer rate:          56.73 [Kbytes/sec] received



Connnection Times (ms)

              min  mean[+/-sd] median   max

Connect:       81   199  366.7    155  3105

Processing:   276   424  221.5    401  3430

Waiting:      182   423  221.6    400  3430

Total:        276   623  427.1    582  3637



Percentage of the requests served within a certain time (ms)

  50%    582

  66%    622

  75%    646

  80%    657

  90%    737

  95%    799

  98%   3279

  99%   3338

 100%   3637 (last request)