How To Perform A Load Testing Though Apache Jmeter Testing

Jmeter is one of the best software for load testing of Java based websites and web applications. Jmeter works on Master Slave pattern and performs testing on targets. Make sure that the firewalls are turned off. All the clients (slaves) must be on same subnet. You need to make sure that you have the IP address for you slaves like 192.x.x.x or 10.x.x.x. If the slaves do not uses 192.x or 10.x then you need not worry as your slaves does not require to be on same subnet masks then. There is one master controller which initiates the test on multiple slave systems.

You need to know some basic terminologies before you proceed with the steps required for load testing through Jmeter testing environment. You have the master, slave and the target. Master is the system that runs the Jmeter GUI that will be controlling the test. The Jmeter server runs on the slave terminals. It accepts the commands from the Jmeter GUI and then performs it on the target.  The target is the web server which is to be targeted for stress test.

On the slave systems, you need some modifications. Go to jmeter/bin directory. From here you can execute jmeter-server.bat. On windows the problem is a bit different. You need to go to the jre\[version]\bin\rmiregistry.exe”. If you do not find this then you need to check the environment settings as you might find multiple JRE installed on your system. Version denotes the JRE version that is installed on your server.

Open the jmeter-serber.bat by selecting a proper text editor installed on your computer. Now go to the line 44 and find the “.setCP” over there.  Now edit the “START rmiregistry” with the full path. As an example you can have “START C:\”<HOME>\jre\bin\rmiregistry.”

Also open the jmeter. Properties in that text editor and edit line with “remote hosts=127.0.0.1”. You need to add the IP address. You need to identify the jmeter servers. You need to identify all the IP addresses on the Jmeter server will be running. As an example you can have the IP address like 192.168.0.1, 2, 2, 4, 5, 6, and 7. For all this you can set the remote hosts as “remote_hosts=192.168.0.0, 192.168.0.1, 192.168.0.2, 192.168.0.3, 192.168.0.4, 192.168.0.5, 192.168.0.6, 192.168.0.7.” Now start the jmeter. Finally open the test plan that you want to run. You can run the test plan on a single slave terminal or you can run it on the entire slave jmeter server once. You just need to select the testplan and right click. You will find the options for running on all servers or on one of them.  It is assumed that you have already added the number of test servers via thread numbers while you created the test plan.

Now you have also added the IP addresses on the Jmeter GUI on the master server. You just need to select the test plan and run with all or one server option for Jmeter testing.

You can finally get the results at the location that you have set for listener in test plan for Jmeter testing.

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JMETER- A Brilliant Testing Tool for Your Software Application

Increasing use of smartphones and iPhone indicates that lot many developments have taken place in several software applications. It feels very special to have all application in a single hand held device. But the fact is that, all these software applications are required to cross through several testing processes before applying in the smartphones. A software application with poor quality creates extra cost and affects the revenue which in turn puts a negative impact on the reputation of the software developing companies. So in order to get good ROI and to face the increasing demand of software application the organizations must use the testing tools that can increase the efficiency of such applications.

Test automation is such a technique that accelerates the testing cycle and also advances the software quality. In order to do this it releases QA personnel to enhance the quality efforts and thus increases the test coverage of the application part which was not properly tested in prior release. One of the most popular automated testing tools is Jmeter which has the following advantages.

Reusability - enables an individual to search and fix more errors and creates library of repeatable tests thus increases the long term value of applications

Predictability and consistency – enables OQ to check errors thus accelerate the resolution process.

Productivity – develops high productivity environment which results in optimizing the quality of the software.

Efficiency – enables easy use of the test automation software supporting multiple users.

Another important part of web/ software application testing is performance testing. Apche Jmeter is java based and is globally accepted as performance testing tool of web applications. Jmeter performance testing tool is used to check the server performance under different load or pressure to prevent form future crashes. It conducts tests by use of HTTP or FTP servers. Test plans involved in such performance testing includes.

Thread group – it is used to indicate the number of running threads and notes the time taken to create all the threads. It also permits to set up the start and end of the run time.

Samplers – this element of test planning concentrates only on web service requests.

Listeners – this element is required only to request post process data.

So if you want to create good quality web or software application then contact the software testing companies for Jmeter testing tool and challenge the competition by supplying software applications that satisfies high load, availability and scalability requirements. For more details refer the home site.

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