I just finished a test case in JMeter and the result is fine; however, I somehow want to see the result reflecting also in the log view.
For some reason, the Sample time (ms) is not reflecting on the log view (Log level: Debug)
Does someone have an idea on how to display that too?
Add listeners to your test plan. Aggregate report and Tree view result, for example.
But use them only for debugging your tests.
I don't think JMeter will report response times in the log file even given you set the most verbose logging level, if you want to have this data in log - I would recommend going for JSR223 Listener instead.
Add JSR223 Listener to your test plan at the same level as all your Samplers live (or according to JMeter Scoping Rules if you want limited samplers to be affected)
Put the following code into "Script" area:
log.info(prev.getSampleLabel(true) + ' response time: ' + prev.getTime())
That's it, now you will be able to see the response times in the jmeter.log file
Related
Update - Deleting the Aggregate report and rerunning the test now gives an error rate of 0. Why is this required?
I am using JMeter 4.0 to hit a REST web service with 20 thread groups by sending a POST request with a JSON body. All 20 requests succeed and give proper response (200 with a correct JSON body). Why is the error rate above 99%? (See image below). Also, why is no of samples is 10063 in report even though View Results Tree tab shows 20 HTTP requests (each with error count 0).
If you run JMeter test which assumes 20 HTTP Request and seeing > 10 000 in the listener - most probably you are opening an incorrect .jtl results file in the listener.
Double check that "Filename" input field is empty
Prior to running a new test make sure to clean "in-memory" results by choosing Run -> Clear All from JMeter's main menu (or click Control+E)
Be aware that using Listeners is a some form of a performance anti-pattern, they don't add any value but consume valuable system resources which can be either used for something else or left intact to save the trees. So:
Remove all the listeners from the test plan
Run your test in command-line non-GUI mode like:
jmeter -n -t test.jmx -l result.jtl
When your test is finished either open JMeter GUI and inspect the result.jtl file with the listener of your choice (you can load it using aforementioned "Filename" tab)
Or generate an HTML Reporting Dashboard out of the result.jtl file - it will contain statistical information, tables and charts outlining your test results.
View Results Tree since few versions only keep last 500 SampleResult and only refreshes every few seconds.
So the number of samples in view results tree is not the total.
Besides, you should never run a load test in GUI mode as it impacts negatively performances of Jmeter injection.
see this for best practices :
https://www.ubik-ingenierie.com/blog/jmeter_performance_tuning_tips/
When I run the test in GUI, i see the Average, Min, Max in GUI. But when I run in console, is there a way to add these to the csv file?
These values are being calculated so you will be able to see the values only when you open .jtl results file after test finishes in the listener of your choice, i.e. Aggregate Report or Summary Report.
If you want to see the interim statistics while your test is being executed you have the following choices:
JMeter Summarizer output. JMeter reports some numbers into stdout while your test is being running
You can get some extended information if you run your JMeter test using Taurus tool as a wrapper
Both console and web interface options are available, in order to see current test execution stats in browser start your test like:
bzt yourtest.jmx -report
And finally you can use Backend Listener to send your results into database, message queue or web service and use custom plotting application to print out either raw or parsed statistics, here you are limited only by your fantasy:
More information:
JMeter: Real Time Results
How to Use Grafana to Monitor JMeter Non-GUI Results
JMeter produces some basic fields/result_field. JMeter doesn't create everything you see in different types of Listeners.
You can give this a try.
Create a plan
Generate atleast 100 samples (As large amount of data is required for some listeners), using a single sampler (request)
Use as many Listeners as you want of different types (say 15 types of listeners)
Run the plan....
Now in the filename field of all the listeners give series of names of files like a1.jtl a2.jtl
and so on....
see the screen shot
enter image description here
Now again run the plan. Go to the files and open them in some good editors like notepad++.
For your surprise you will find the same data in all the files irrespective of the type of listener generating the file.
Crux of the matter is : JMeter gathers only handful of information from the run, the rest information which is shown in different Listeners is COMPUTED by the JMeter.
So you can read the *.jtl file into any of the listener.
In JMeter, the new way since 3.0 to have results is to use the Web report generated at end of test:
http://jmeter.apache.org/usermanual/generating-dashboard.html
How do i get the load time of my test from jmeter into my influxdb. I am able to see data in influxdb that has been added from jmeter but how do i see the "load time" for my test case. The thing is if i run my test case 20 times, as number of threads:20, in influxdb 20 are divided based on number of threads per second, how can i change that. I want to see my load time for each test case in Influxdb-Grafana.
In Jmeter just add a Summary Report to the existing Recording Controller. Then run the testcase. You'll see a row for each request and there would be a lot of information about the test including response time (Average, Min and Max)
I'm using Jmeter for various performance and load tests and would like to save summary of Summary report and aggregate report automatically when test is done.
Usually summary table when you running form GUI looks like this :
Label | Samples | Average | Min |Max |Error |Throughput |etc.
When I use Write results to file/ Read form file filed , generated report will contain all http requests I generate, it can be millions. File would be huge and even then, no summary on the end . **No average time **
Same situation for aggregate report, I can not auto generate Summary of aggregate reports same as when you use GUI mode. Saved file contain all requests which is not useful at all.
Can I force Jmeter to save those two summaries when test is over ?
thanks in advance
First of all, don't run your test using GUI. Run your JMeter test using command-line non-GUI mode as
jmeter -n -t /path/to/testplan.jmx -l /path/to/results/jtl
Second, disable all the listeners during test run. Once test execution is finished you will be able to open JMeter's GUI, add Listener of your choice to Test Plan or Workbench and use "Browse" button to locate your results.jtl file.
JMeter cannot display only summary as all the "Total" fields are being calculated.
№ Samples - is count of all executed requests
Average - is arithmetical mean of all requests time (sum of all samples elapsed time divided by count)
etc. See JMeter Glossary for metrics explanation
So you got the idea right, it is better to store the necessary minimum, but you need to store something in order to be able to perform results analysis.
You can control what to store by amending properties which names start with jmeter.save.saveservice.. See jmeter.properties file in bin folder of your JMeter installation for the details.
We're running a test case for load testing, over different servers. What we want to do is, given that test case, stop if we can see a performance decrease, based on a response time threshold.
What we have now is threadgroup defined, and inside it, an HTTP request defined plus a view table for output. What should I do to put this control in there?
Add Duration Assertion and specify threshold there
In your Thread Group set "Action to be taken after a Sampler error" to Stop Test.
Above steps will stop your test after first occurrence of response time exceeding the threshold.
See How to Use JMeter Assertions in Three Easy Steps article for more information on how to conditionally set pass/fail criteria in your JMeter test.
P.S.
Remove View Results Table listener (or disable it) during load test execution as it consumes a lot of resources.
Run your load test in non-GUI mode as JMeter GUI is not designed for running the actual load test and may be a bottleneck in case of more or less severe load.