JMeter proxy Step-by-step Performance tool

Monday, July 27, 2009




JMeter proxy
Step-by-step



Jmeter is a performance tool you can download the installation file in the following link.


http://jakarta.apache.org/site/downloads/downloads_jmeter.cgi


This short tutorial attempts to explain the exact steps for
JMeter's proxy. For those new to Jmeter, one easy way to create a
test plan is to use the Proxy. What the proxy does is it records
the requests sent to the server. Jmeter's proxy currently does not
support recording HTTPS. Since HTTPS is secure, the proxy is
unable to decrypt the traffic and record the request parameters or
cookies. There are several ways to get around this limitation. The
easiest method is to use Badboy

http://www.badboy.com.au/.
The second option is to record in HTTP and then change the test
plan to use HTTP request defaults.


A Basic Proxy Instructions


  1. start jmeter with jmeter.bat on windows and jmeter.sh on unix
  2. select “test plan” on the tree
  3. right click on the “test plan” and add a new thread group: add -> thread group




  4. select the thread group
  5. right click “add -> config element -> Http Request Defaults”
  6. Protocol – enter “HTTP”
  7. Server name – enter “jakarta.apache.org”
  8. Path – leave blank
  9. Port number – enter “80”




  10. select workbench
  11. right click on workbench and add the Http proxy: add -> non-test elements -> Http

    Proxy Server
  12. Port field - Enter “9090”
  13. Target Controller – click on the drop down and select “test plan > thread group”
  14. Click the “add” button in “Patterns to include”. This will create a blank entry.
  15. Enter “.*\.html”
  16. Click the “add” button in “Patterns to exclude”. This will create a blank entry.
  17. Enter “.*\.gif”
  18. Click the “start” button at the bottom
  19. Start Internet Explorer, but do not close Jmeter.

    Note: make sure the include and exclude
    patterns are correct. Below are some common patterns for images
    and types of pages.


    .* - all

    .*\.png – png images

    .*\.gif – gif images

    .*\.jpg – jpeg images

    .*\.php

    .*\.jsp

    .*\.html

    .*\.htm

    .*\.js

    As a general tip, it is a good idea to set the homepage
    for your browser to a blank page. This way, it reduces the number
    of unwanted pages Jmeter records during the session. It is a good
    idea to try the proxy with different sites and get comfortable
    with different filtering patterns.





  20. From the tool bar, click “tools -> internet options”. This should bring up the options.
  21. Select the “connection” tab
  22. Click “lan settings” button near the bottom.
  23. On the connections tab, check “Use a proxy server for your LAN”. The address and port

    fields should be enabled now.
  24. Address – enter “Localhost” or the IP address of your system
  25. Port – enter “9090”.
  26. Click “ok” button
  27. Click “ok” button again. This should return you to the browser
  28. In the “Address” bar at the top, enter “http://jakarta.apache.org/jmeter/index.html” and

    hit the “enter” key.
  29. Click on a few links on Jmeter's page.
  30. Close internet explorer and bring up the Jmeter window.

Reviewing the Test Plan


Expand the thread group and there should be several
samplers. At this point, the test plan can be saved as is. If you
forget to add default http request settings, you will have to
manually delete the servername, and port. In this sample, there
aren't any default request parameters. If a particular request
parameter is required by all pages, the request defaults is where
one would add the entries.






  1. Select “thread group”


  2. Right click “add -> listener -> aggregate report” to add an aggregate listener. The
    aggregate listener will show some basic statistics..





  3. Select “thread group”
  4. Number of threads – enter “5”
  5. Ramp up Period – do not change

  6. Loop count – enter 100






Running the Test


At this point, we are ready to run our test plan and see
what happens. Save the test plan. When you're ready to run the
test, there's two ways:



  1. Run -> Start


  2. CRTL – R


Before you start the test, select “aggregate report”. As the test runs, the statistics will change
until the test is done. At the end of the test, the aggregate report should look like this.





While the test is running, in the upper right-hand corner,
there should be a green square. When the test is done, the box
should be grey.








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