hello im a newbie who trying learn and use Jmeter, i have a question
when im run my jmeter scripti got a data that seems like not finish yet, like in the picture, so when i try to make dashboard report it always said "cannot error errorlevel=1"
this how the report looks like
As a workaround you can just delete this "problematic" line with the incomplete metrics.
With regards to the reason - it looks like that JMeter test has been terminated abnormally, check out jmeter.log file for any suspicious entries.
Looking into column "M" - allThreads it seems that you're running the test with 2800+ virtual users, it might be the case you need to follow recommendations from 9 Easy Solutions for a JMeter Load Test “Out of Memory” Failure article and if JMeter still lacks resources consider going for Distributed Testing.
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 have an asp.net project ,which I want to load test with around 100 users at a time , can someone plz tell me how can I do this. I tried jMeter but it seems very difficult to understand as because I m doing this first time..Thanks In Advance
First of all, you need to create test script. You can do this manually in Jmeter GUI, or you can use Recording controller or something like SmartMeter's Recorder
After that, you should have recorded script and you can edit it. Add some neede correlations, special variables, prepared data and so.
Before running the test, change number of threads to 100, setup rump-up time and you can start your test.
I suggest you to try some tutorials about load testing and Jmeter, eg.
Tutorials point
SmartMeter's quickguide
Blazemeter's tutorial
I would like to gather and extract information about unit tests analysed by sonar such as : test name, status, test case ran ...
I wonder if I can get this via the REST API ? an dif yes, how can I do such a thing ?
I am able to find all issues related to unit test with the filter "?rules=" but that doesn't quite fit my needs.
Actually, sonar only rises one issue per file with failed test and I have no other informations such as which test cases fail or anything. Am I doing something wrong or what I want is simply not available ?
This is possible thanks to the "/api/tests/show" API WS.
See the online documentation
See a live example on Nemo
I want to run a Load test on my Production server to verify that the server can handle 1 million requests per 10 seconds using JMeter. How to configure JMeter Thread group for 1 million request in 10 seconds? How many client I need to do this test?
Please share your valuable experience if you have experience doing this type of load test.
First, you should ensure you really need 1 million requests in 10 seconds (what kind of site are you testing ?).
Then if you want to use JMeter, ensure:
You use last version
You tune memory correctly
You will certainly have to use distributed testing if not using Cloud
Follow best practices
http://www.dzone.com/links/r/see_how_to_make_jmeter_run_thousands_of_threads_w.html (Disclaimer : I'm the writer of this)
http://jmeter.apache.org/usermanual/best-practices.html
You might try Constant Throughput Timer to make a kind of Barrier
Alternatively you can try "Delay thread until creation"
And finally try a Cloud solution to get to this load, see this french blog on all kind of issues you will face in all fields (not only load software):
http://blog.milamberspace.net/index.php/2012/07/14/rapport-de-tres-gros-test-de-charge-avec-la-solution-blazemeter-1161.html)
But I never tried up to this load, so I cannot tell if it will work and it is kind of unexplored field
you can accomplish this using Gatling and scaling out to several machines that would run the test in parallel. in the end Gatling can aggregate the results into 1 report.
Gatling documentation dosent provide much info for this :
http://gatling.io/docs/1.5.6/user_documentation/cookbooks/scaling_out.html
but you can check my blog post to see how this can be done (ive wrote a script for this purpose)
Blog - http://www.nimrodstech.com/gatling-cluster-load-testing/
Gist - https://gist.github.com/Nimrod007/5cfed34eeffedfd7ec76
Looks like you'd better look onto another, more suitable tool for such kind of scenario,
e.g. Tsung
Tsung homepage
Tsung # github
Scaling to 30K: Tsung
or at least Gatling instead:
Gatling homepage
Gatling: scaling out
Perhaps if you would like to use jmeter in any case you can look onto BlazeMeterLoad Testing Cloud solution.