For non-gui JMeter, there is much info available about how to take a report. which is basically done by mentioning report name in command and not adding any listener in Test Plan
But I use a different approach. Please confirm whether it compromises the performance of JMeter or it is as good as mentioned in the 1st paragraph.
I add Listener in Test plan and mention filename in the listener. Do my configure settings. Close the Test plan and run it in NON-GUI mode with the following command.
jmeter -n -t ProjectName.jmx
It is better to use first approach, in which you define the path of report file within your command. It is considered most efficient approach.
An alternative to above is adding 'simple data writer' listener to your test plan. Define the path of report in this listener and run the jmeter script from command line. This is also resource efficient approach. It is similar to your approach. Only difference is that instead of enabling multiple listeners, enable only one listener that is 'simple data writer'. You can later use report generated by this listener in different listeners and generate graphs as required.
To cut it short, resource usage depends upon on choice of listener. Command line mode uses lightest listener by default. If you don't want to mention it in command-line; then enable 'simple data writer' with in your GUI plan. Hope you understand the concept.
I want to use the following Listeners, but as part of my *.jtl file results
View Results Tree
Aggregate Report
jp#gc - Response Times Percentiles
jp#gc - Response Times over Time
Now, since high volume Load Tests run in non-gui mode, so these Listeners have no value. But perhaps they have value when we generate reports after we generate the jtl file. How can that be acheived? Is there some setting in user.properties? Which can enable these listeners? at Report time generation.
Related
When I run Jmeter from Windows CLI, after some random time, the tests are being stopped or stuck. I can click on ctrl+C (one time) just to refresh the run but part of the request will be lost during the time it was stuck.
Take a look at jmeter.log file, normally it should be possible to figure out what's wrong by looking at messages there. If you don't see any suspicious entries there - you can increase JMeter's logging verbosity by changing values in logj2.xml file or via -L command-line parameters.
Take a thread dump and see what exactly threads are doing when they're "stuck"
If you're using HTTP Request samplers be aware that JMeter will wait for the result forever and if the application fails to respond at all - your test will never end so you need to set reasonable timeouts.
Make sure to follow JMeter Best Practices
Take a look at resources consumption like CPU, RAM, etc. - if your machine is overloaded and cannot conduct the required load you will need to switch to distributed testing
There are several approaches to debugging a JMeter test which can be combined as a general systematic approach that I capable of diagnosing most problems.
The first thing that I would suggest is running the test within the JMeter GUI to visualize the test execution. For this you may want to add a View Results Tree listener which will provide you with real time results from each request generated:
Another way you can monitor your test execution in real time within the JMeter GUI is with the Log Viewer. If any exceptions are encountered during your test execution you will see detailed output in this window. This can be found under the Options menu:
Beyond this, JMeter records output files which are often very useful in debugging you load tests. Both the .log file and the .jtl file will provide a time stamped history of every action your test performs. From there you can likely track down the offending request or error if your test unexpectedly hangs:
If you do decide to move your test into the cloud using a service that hosts your test, you may be able to ascertain more information through that platform. Here is a comprehensive example on how to debug JMeter load tests that covers the above approaches as well as more advanced concepts. Using a cloud load test provider can provide your test will additional network and machine resources beyond what your local machine can, if the problem is related to a performance bottleneck.
I am new to using JMeter and have developed a basic test plan with HTTP Sampler and a few listeners. Please run me through the entire process of how I can start after opening JMeter ?
There's no right answer for this, it depends what you're wanting to achieve. I'd suggest starting with the best practices: http://jmeter.apache.org/usermanual/best-practices.html
And also look at building a web test plan: http://jmeter.apache.org/usermanual/build-web-test-plan.html
I would look at the Graphs Generator listener - https://jmeter-plugins.org/wiki/GraphsGeneratorListener/ - use these graphs to make sure you're making the number of transactions that you would expect in your tests.
Basically - the documentation is your friend. I took time to read what each controller, listener and sampler was doing and decided how to implement these myself. There was some trial and error. JMeter is an easy tool to pick up and use but there's a LOT of depth to it.
In addition to Ali1874 answer, I would suggest looking into how to run JMeter tests using command line. You can find more information at http://jmeter.apache.org/usermanual/get-started.html#non_gui. With regards to reporting JMeter is able to produce nice HTML reports when using -e -o options http://jmeter.apache.org/usermanual/generating-dashboard.html#report_after_load_test.
Also, with regards to Jmeter test plans, in my previous company we used to parameterize number of threads required, servers and other elements. In general structure looked like the one at the example test plan.
We had different user defined variables elements for different environments for faster test tuning. Also, we used bzm – Weighted switch controller (https://github.com/Blazemeter/jmeter-bzm-plugins) to distribute load among endpoints by including HTTP requests from Test Fragment element so that we would not have to duplicate requests allowing to manage them more easily. You can check out full plan at here (https://github.com/gretard/testing/blob/master/00-jmeter/results/samplePlan.jmx). Please bear in mind that test plan uses bzm – Weighted switch controller plugin and jpgc - Standard Set plugin which you can install by using Plugins manager (https://jmeter-plugins.org/wiki/PluginsManager/).
Hope this will help.
I'm new to Apache Jmeter here.
While reading user manual documents of Jmeter, I see this:
View Results Tree MUST NOT BE USED during load test as it consumes a lot of resources (memory and CPU). Use it only for either functional testing or during Test Plan debugging and Validation.
The above statement is taken from this document, just under the View Results Tree section
http://jmeter.apache.org/usermanual/component_reference.html#Save_Responses_to_a_file
I want to ask how I can use Listeners that is "MUST NOT BE USED during load test..."?
in GUI mode, Jmeter Apache.
Any suggest is appreciated.
GUI mode is only for creating & debugging your test. So, You can use any listeners you want which will help you to debug your test. Once your test is created/updated, remove/disable those listeners. When you actually do the loadtest with Jmeter, You need to run your test in Non-GUI mode. This site has really good information on using JMeter.
http://blazemeter.com/blog/jmeter-performance-and-tuning-tips
When you run in non-gui mode, you pass the argument for the location where the result file should be created. Later you can import the result file in JMeter for analysis.
I am using jmeter for load and performance testing. I am able to successfully generate summary report by using only one user as load. But, if I want to generate summary report for multiple users (say 100 users), how can I configure jmeter GUI to generate summary report?
Thanks in advance :)
JMeter doesn't care about number of users. The only thing to consider: don't use JMeter GUI to perform load test itself.
The easiest approach to use:
Configure your test as required. JMeter GUI can be used at this stage.
Run your test in non-GUI console mode as follows:
jmeter -n -t /path/to/your/test.jmx -l /path/to/test/results.jtl
After load test open JMeter GUI (even empty test plan)
Add the listener of your choice, i.e. Summary Report
Click "Browse" button and open your /path/to/test/results.jtl
Perform analysis, raise bugs, etc.
Also make sure that you're following other recommendations from JMeter Performance and Tuning Tips guide.
You have to put the Summary Report controller at the top level, just beside (not inside) the Thread Group. Otherways, its scope becomes a single thread, which is not useful.
I am new to Jmeter and trying to understand what all can be achieved using Jmeter. I want to perform endurance or soak testing of a application using Jmeter, i.e. I want to run a particular script for a particluar number of users for a period of 3 hours.
What all options are available to me and what is the best availablelistener to monitor the result?
Please help. Kindly add if I am missing anything that I should know before starting with soak testing?
For setting up the numbers of users and runtime of the test you use a Thread Group. Setting the runtime is done by checking the Scheduler check-box and specifying Duration.
Of the original listeners in JMeter I have found myself most oftenly just using the plain Summary Report. But JMeter Plugins gives additional listeners which may be better, it depends on what you want to measure. The JMeter Plugins also gives additional thread groups, where you can specify e.g. an increasing load over time.
Use a Thread Group to set up your number of users and the duration of your test (using the scheduler of the Thread Group).
Then add all the samplers and logic controllers you need to perform your testing.
Next, add a Summary Report listener to get an overview of your results (min/max/average and such), and add a View Result Tree listener to get an overview of EACH step your testplan is taking. This Tree listener is great to actually see what jmeter is doing, and to debug your tesplan.
BTW: if you add a HTTP Request Defaults object, you can set your URL and options in there, and don't need to add it to each and every sampler again. Especially works like a charm if you start using regexp extractors and such.