I have created a test plan in Jmeter which executes certain queries and store elapsed time in csv file. I need to save row count against each sampler request. How can I achieve this?
Below is my CSV file configuration
Don't use any of JMeter Listeners to store test results, they don't add any value and create memory and disk IO overhead instead. You should be running your tests in command-line non-GUI mode like
jmeter -n -t test.jmx -l result.jtl
and when your test is finished either open result.jtl file with the listener of your choice or generate HTML Reporting Dashboard from it.
Coming back to your question. Given you have a JMeter Variable holding some "interesting" value and you would like this variable value to be added to test results just define sample_variables property and put the variable name there. For example, if you have JMeter Variable called rowcount add the next line to user.properties file:
sample_variables=rowcount
and next time you run your test you will see an extra column in the .jtl results file called rowcount holding the variable value for each and every sampler. See Sample Variables User Manual chapter for more details.
Related
I have a performance test plan in Jmeter. As a constant running test plan, I need to generate execution summary in CSV format with a timestamp.
In the View Result Tree, I have provided a csv filename with timestamp variable as '${__time(YYYY-MM-DD-SS,time)}' (Please see image below). But this doesn't work for me as it is not generating any files after the run.
Or is there any way we can generate summary report csv with different name for each run?
It is not recommended to use Listeners for anything but tests development and/or debugging, they don't add any value and consume a lot of resources because all the thread context is being passed to the listener when any Sampler occurs.
So I would recommend:
Removing all listeners from your test plan
Run your test in command-line non-GUI mode
If you need to include the timestamp into the .jtl results file you can use Windows date and/or time commands
jmeter -n -t test.jmx -l %date:~10,4%-%date:~4,2%-%date:~7,2%.csv
You can control what is being stored in the .jtl results file using properties responsible for the Results File Configuration
I have a JMeter test that is invoking an API (send API) in an asynchronous manner. The result of the invocation is then available via the other API call (results API). When I consume results, I do have a metrics about several phases of processing in the JSON response, which I would like to push into the resulting JMeter report.
I would like to get averages for that data, not just average times on the overall end-to-end test.
Is it something that can be implemented in JMeter?
Injecting custom fields into .jtl results file can be done using sample_variables property
Given you have 2 JMeter Variables, i.e. foo and bar you can "tell" JMeter to add them to the results file by either adding next line to user.properties file
sample_variables=foo,bar
or passing the values via -J command-line argument like:
jmeter -Jsample_variables=foo,bar -n -t test.jmx -l result.jtl
Once your test finishes you will see 2 extra columns in the .jtl results file holding the values for foo and bar JMeter Variables, hopefully getting average for this data will not be a problem.
References:
Configuring JMeter
Apache JMeter Properties Customization Guide
This is a job for the Summary Report:
The summary report creates a table row for each differently named request in your test. This is similar to the Aggregate Report , except that it uses less memory
See example:
Average: It is the average time taken by all the samples to execute specific label. In our case, average time for Label 1 is 942 milliseconds & total average time is 584 milliseconds.
I have a jmeter test plan that is composed of a single threadgroup a number of custom java request samplers as children of the thread group and an aggregation listener.
The aggregation listener is writing to a file which includes a row for each invocation of each one of the java samplers. However it is not performing or writing any aggregations.
The default summary however is being produced and written to the log and that contains the aggregated requests/per second etc that I would expect from the aggregation listener.
Can anyone tell me how to either :a) Get the aggregation listener to produce aggregations rather than just a csv file containing rows with the results of each java sampler request? b) Redirect the output of the default test summary to another file?
Don't use listeners as they don't add any value, they just create memory and disk IO overhead. You should be running your JMeter test in command-line non-GUI mode telling JMeter to store the results in a file using -l command-line argument like:
jmeter -n -t test.jmx -l results.jtl
Once your test is done you should be able to open results.jtl file with the listener of your choice and see the results and export them into a file if needed. See Greedy Listeners - Memory Leeches of Performance Testing guide for detailed explanation regarding why you should not be using JMeter Listeners for anything but tests development and/or debugging
If you need to generate the Aggregate Report in unattended manner without interim manual step you will need JMeterPluginsCMD Command Line Tool, using it you will be able to generate different tables and charts from the .jtl results files
For the moment you have only 2 options of storing summariser output: [stdout] (console)5 and jmeter.log file. You can play with JMeter log4j configuration to choose what you want to store there.
To get summarized results add to your test plan Generate Summary Results:
Generates a summary of the test run so far to the log file and/or standard output
Update interval in jmeter.properties to your needs
# interval between summaries (in seconds) default 3 minutes
#summariser.interval=30
I have extracted the data from the response using jmeter's Regular expression extractor.Now i need to print those extracted values in excel.How to do that please help me out.I will be using multiple thread and all those output should be printed in excel as well.
The easiest way it to add the value to JMeter's .jtl results file, just take the next steps:
Add the following line to user.properties file (located in JMeter's "bin" folder)
sample_variables=your_variable_reference_name
or
pass the parameter via -J command-line argument like:
jmeter -Jsample_variables=your_variable_reference_name -n -t test.jmx -l result.jtl
Restart JMeter to pick the change up
Next time you run your JMeter test you will see an extra column in the .jtl results file containing the variable from regular expression extractor value for each sampler
References:
Sample Variables Property
Apache JMeter Properties Customization Guide
Another approach (for example if CSV format is not suitable for some readon) would be adding Apache POI libraries to JMeter Classpath and using JSR223 Test Elements to create and/or update Excel file, but this approach is harder as you will need to avoid concurrent writes or do in in i.e. tearDown phase to avoid race conditions and data loss.
See Busy Developers' Guide to HSSF and XSSF Features for example code for working with Excel documents using Java/Groovy.
I do the same scenario that was already described in other topics not at once: I'm trying to save Jmeter results to database from csv file.
I have an Aggregate Report listener that saves results to csv file, and everything is OK here.
I also added TearDown Thread Group to my scenario that gets strings from this csv file (by CSV DataSet config) and processes it to database. This part also works fine with static CSV.
Two problems here:
Aggregate Report listener is added on the top level of scenario. So, it adds all samplers from TearDown group to results file as well. So, it's like a recursion: if I do teardown until end of result file, I'll never reach the end, as every new iteration adds some new rows.
At the moment when CSV dataset config takes csv file, it's still in memory only and not finalized to disk. So, file is just empty. How to tell Jmeter that it should write the content from memory to a file and close input stream?
Any ideas how to solve it?
I know that I can move Listener into threads, but in this case I have to duplicate it for every thread group. It's always better to have one listener in one place as I can potentially change its settings.
Thanks in advance.
There is a JMeter Property jmeter.save.saveservice.autoflush defaulting to false
# AutoFlush on each line written in XML or CSV output
# Setting this to true will result in less test results data loss in case of Crash
# but with impact on performances, particularly for intensive tests (low or no pauses)
# Since JMeter 2.10, this is false by default
#jmeter.save.saveservice.autoflush=false
You can amend its value by setting it to true so JMeter will write down each single line of results into the file and closing the file once done. It can be done in 2 ways:
Permanent: add the following line to user.properties file (located in JMeter's "bin" folder)
jmeter.save.saveservice.autoflush=true
You will need to restart JMeter to pick the change up
Ad-hoc: pass the property via -J command-line argument
jmeter -Jjmeter.save.saveservice.autoflush=true -n -t .....