How to interpret apache benchmark ab results? Please help!

Hi,
I am having my sites on a hybrid VPS.

I ran this command to test one of my websites :

(The mainpage is a cached php page)

root@host [~]# ab -c5 -n500 http://healthtipsbest.com/
and the result is as follows :

This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Copyright 2006 The Apache Software Foundation, http://www.apache.org/

Benchmarking healthtipsbest.com (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Finished 500 requests


Server Software:        Apache
Server Hostname:        healthtipsbest.com
Server Port:            80

Document Path:          /
Document Length:        26147 bytes

Concurrency Level:      5
Time taken for tests:   27.626703 seconds
Complete requests:      500
Failed requests:        0
Write errors:           0
Total transferred:      13194500 bytes
HTML transferred:       13073500 bytes
Requests per second:    18.10 [#/sec] (mean)
Time per request:       276.267 [ms] (mean)
Time per request:       55.253 [ms] (mean, across all concurrent requests)
Transfer rate:          466.40 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0  192 711.6     14    3019
Processing:    10   83 159.0     66    1622
Waiting:        1   37 161.9     16    1604
Total:         16  275 781.1     82    4622

Percentage of the requests served within a certain time (ms)
  50%     82
  66%     85
  75%     87
  80%     89
  90%     94
  95%   3028
  98%   3073
  99%   4592
 100%   4622 (longest request)

Code (markup):

Is there any problem with my server?

Please help me understand the results and finetune my server.

Please reply if you would like to know more information.

Thank you.

 

I dont see any problem. The commands looks correct. Why dont you restart Apache and let us know if this works?

 

Hi,
Thank you for your reply.
I think there is some problem with my Connection Times

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0  192 711.6     14    3019
Processing:    10   83 159.0     66    1622
Waiting:        1   37 161.9     16    1604
Total:         16  275 781.1     82    4622

Percentage of the requests served within a certain time (ms)
  50%     82
  66%     85
  75%     87
  80%     89
  90%     94
  95%   3028
  98%   3073
  99%   4592
 100%   4622 (longest request)

Code (markup):

When I run the same command on google.com, here is the result :

root@host [~]# ab -c1 -n500 http://google.com/
This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Copyright 2006 The Apache Software Foundation, http://www.apache.org/

Benchmarking google.com (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Finished 500 requests


Server Software:        gws
Server Hostname:        google.com
Server Port:            80

Document Path:          /
Document Length:        219 bytes

Concurrency Level:      1
Time taken for tests:   11.643690 seconds
Complete requests:      500
Failed requests:        0
Write errors:           0
Non-2xx responses:      500
Total transferred:      255500 bytes
HTML transferred:       109500 bytes
Requests per second:    42.94 [#/sec] (mean)
Time per request:       23.287 [ms] (mean)
Time per request:       23.287 [ms] (mean, across all concurrent requests)
Transfer rate:          21.38 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        8   10   7.3      8      35
Processing:     9   12   7.5     10      38
Waiting:        9   12   7.4     10      37
Total:         17   22  14.8     18      72

Percentage of the requests served within a certain time (ms)
  50%     18
  66%     18
  75%     18
  80%     19
  90%     19
  95%     70
  98%     71
  99%     71
 100%     72 (longest request)

Code (markup):

When I compare my site results with google, I find that my site is having some problem with Connection Times.

How to solve this issue.

Is there any other issue ?

Thank you