Jmeter - Recording through JMeter using HTTP Proxy Server

Hi Friends,

We have already see how to test single page in Jmeter in which we don't require HTTP Proxy server. But what if we have to test a process which include two or more click on a page and url are changing because of that.

Steps:

1 . Add :
     Config Element > HTTP request default

      Server Name:  www.abc.com 

      Path:    /

     Timer > Guassian Random Timer

      Deviation: 100

      Constant Delay : 300

      Listener > Summary Report

      Logic Controller > Recording Controller  

      All the recording will come under this.

2.  Workbench > Non Test Element > HTTP Proxy Server

Port :8080

Type: HTTP request

URL Patterns to exclude :  .*\.jpg      ,   .*\.png    , .*\.js   ,   .*\.jpeg   etc

Donot start Http server right now.

3. Mozilla > Tools > Option > Networks > Setting

 Set Manual proxy config :  

 HTTP Proxy:localhost        port:8080

check : Use this proxy server for all products

4. Now open mozilla and go to website :  www.abc.com

It shd not open as we have not started proxy server yet.

5. Now go to workbench > Http proxy server and click on START button.

Now all the http request will be captured by recorder. So simply click on few link for which you want to do load test eg Search some product name in website or go to home page and product page etc.

6. Stop the proxy server.

7. Clean the recording script means remove un necessary urls of third party etc.

8. Now go to thread group and run.

RESULT:

1. Normally we check Average load time of page as load increases.

2. Througput vs Load vs Error rate

Throughput in /sec shd increase in starting and get stable after some time and start decreasing rapidly.

In my case i searched a keyword in an ecommerce website eg "apple iphone" and got following result:

User/Sec Througput [/sec] Error Rate

1 ----------> 0.9 ----------> 0
2 ----------> 2.1 ----------> 0
4 ----------> 3.2 ----------> 0
5 ----------> 3.2 ----------> 0
6 ----------> 3 ----------> 0
7 ----------> 4.3 ----------> 0
8 ----------> 5.3 ----------> 0
10 ----------> 9.2 ----------> 0
12 ----------> 12.3 ----------> 0
16 ----------> 14.9 ----------> 0
24 ----------> 16.9 ----------> 0
40 ----------> 17.9 ----------> 0
60 ----------> 18 ----------> 0
62 ----------> 11.9 ----------> 0
64 ----------> 10.1 ----------> 0
66 ----------> 18 ----------> 0
76 ----------> 12 ----------> 0
80 ----------> 16 ----------> 0
90 ----------> 18 ----------> 0
100 ----------> 18 ----------> 0
110 ----------> 18 ----------> 0.4
120 ----------> 16 ----------> 8
130 ----------> 18 ----------> 19
200 ----------> 22 ----------> 48
400 ----------> 44 ----------> 70
800 ----------> 54 ----------> 85

So throughput keep on increasing from 0.9/sec till 54/sec but when user/sec rate is at 110 then at that point Error % start increasing means request start bouncing from server.

So i can say website is meant to handle 100 user/sec with 18/sec throughput and 0%  Error rate.

Hope this blog clear few doubts!!!

Regards

Sheetal Singh