nixCraft

Can any one help to get it understand the result

I have ran ab command on 2 servers. pl. help me to read it and also tell me which server has the better condition and how much more be achieved.

1: ab -k -n 5000 -c 100 -t 60 localhost/tab/loadtest.php

Benchmarking localhost (be patient)
Completed 5000 requests
Completed 10000 requests
Completed 15000 requests
Completed 20000 requests
Completed 25000 requests
Completed 30000 requests
Completed 35000 requests
Completed 40000 requests
Completed 45000 requests
Finished 50000 requests


Server Software: Apache
Server Hostname: localhost
Server Port: 80

Document Path: /tab/loadtest.php
Document Length: 63 bytes

Concurrency Level: 100
Time taken for tests: 37.835851 seconds
Complete requests: 50000
Failed requests: 0
Write errors: 0
Keep-Alive requests: 0
Total transferred: 12352223 bytes
HTML transferred: 3150567 bytes
Requests per second: 1321.50
Time per request: 75.672
Time per request: 0.757
Transfer rate: 318.80

Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 9 11.1 5 137
Processing: 7 65 51.0 56 821
Waiting: 1 40 49.2 35 819
Total: 7 74 53.1 65 837

Percentage of the requests served within a certain time (ms)
50% 65
66% 80
75% 90
80% 96
90% 114
95% 129
98% 159
99% 176
100% 837 (longest request)



2: ab -k -n 5000 -c 100 -t 60 localhost/tab/loadtest.php (server 2)

Document Path: /tab/loadtest.php
Document Length: 1042 bytes

Concurrency Level: 100
Time taken for tests: 20.958712 seconds
Complete requests: 50000
Failed requests: 0
Write errors: 0
Keep-Alive requests: 0
Total transferred: 61424560 bytes
HTML transferred: 52120840 bytes
Requests per second: 2385.64
Time per request: 41.917
Time per request: 0.419
Transfer rate: 2862.01

Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 3 5.8 1 73
Processing: 12 37 17.2 36 510
Waiting: 0 24 12.1 22 508
Total: 12 41 20.2 40 511

Percentage of the requests served within a certain time (ms)
50% 40
66% 47
75% 53
80% 57
90% 66
95% 77
98% 91
99% 105
100% 511

Use remote computer or another server. ab from localsystem will not give you accurate results.

Let us consider the following command which will connect as five users accessing cyberciti.biz site a total of 200 times.
The following will give out will give infomration about the server:
Next you get statistics that provide a quick idea of how well the test went. Note there shoud not be any failed requests:
The following provides millisecond timing statistics that should give you an idea of how long connections spent in various state.
The following gives an idea of what the worst case times were like:

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/usr/local/apache2/bin/ab -k -n 5000 -c 100 -t 60 http://ibnlive.in.com/tab/loadtest.php
This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0
Copyright 1996 Adam Twiss, Zeus Technology Ltd, Application Delivery Networking, Application Acceleration, Internet Traffic Management System : Zeus.com
Copyright 2006 The Apache Software Foundation, Welcome! - The Apache Software Foundation

Benchmarking ibnlive.in.com (be patient)
Completed 5000 requests
Completed 10000 requests
Completed 15000 requests
Finished 17824 requests


Server Software: Apache
Server Hostname: ibnlive.in.com
Server Port: 80

Document Path: /tab/loadtest.php
Document Length: 1000 bytes

Concurrency Level: 100
Time taken for tests: 60.6869 seconds
Complete requests: 17824
Failed requests: 0
Write errors: 0
Keep-Alive requests: 17770
Total transferred: 22820884 bytes
HTML transferred: 17824000 bytes
Requests per second: 297.03 [#/sec] (mean)
Time per request: 336.663 [ms] (mean)
Time per request: 3.367 [ms] (mean, across all concurrent requests)
Transfer rate: 371.39 [Kbytes/sec] received

Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.7 0 17
Processing: 7 204 1198.8 50 22540
Waiting: 7 204 1198.7 50 22540
Total: 7 204 1198.7 50 22540

Percentage of the requests served within a certain time (ms)
50% 50
66% 72
75% 94
80% 113
90% 225
95% 407
98% 1083
99% 2999
100% 22540 (longest request)