I'm setting up a load test for several threads that each one needs a specific token.
How can I outsource it via csv file or other solution?
Screenshot of code:
You can use a csv data set config in jmeter for csv/txt files. Keep data in external csv or text file and use in your jmeter script using csv data set config for your desired threads.
Make sure the number or records in the file should be the same as the number of threads you want to execute.
https://octoperf.com/blog/2018/01/25/jmeter-csv-data-set-config/
Related
Txt file is showing empty when i am trying to save Correlated value to CSV or Txt file using JMeter plugin HTTP Simple Table Server?
please find the steps i did
Step 1: File initialization kept in setUp Thread Group
Initialization
Step 2: correlated value is in Ultimate thread group, so i have placed adding in thread group end
using below help
POST : http://hostname:port/sts/ADD
POST Parameters : FILENAME=file.txt,LINE=D0001123,ADD_MODE=[FIRST,LAST],UNIQUE=[FALSE,TRUE]
For Adding using
not throwing any errors but file is showing empty
I believe you need to call SAVE endpoint in order to flush the dataset to the file
You may find approach with Flexible File Writer and Sample Variables easier to use
Using jMeter to set up a soak / load test that needs to run each request with different data. The structure I currently have is
Thread Group (2 Users, 2 Loops)
- Simple controller
-- Java Sampler (Custom Plugin) to convert CSV Formula data into NewThreadData.csv (as variable)
-- Java Sampler (Custom Plugin) to create directory of files created with NewThreadData.csv merged into a template
-- While Controller Condition - js NewThreadData column not = EOF
--- CSV Data Set Config NewThreadData.csv (Recycle False / Stop of EOF False) - filename passed as variable
--- JMS PUblisher with the FileName a variable using the filename column from within NewThreadData.csv
My problem is the on the second loop, the data is updated in NewThreadData.csv, but the CSV in the while loop never runs again.
Appears that the CSV Data Set Config "knows" it has been run, regardless of the actual CSV data.
Questions
How can I get the CSV Data Set Config to be rerun / re executed in this scenario?
Are there undocumented variables or means of getting the config to reprocess?
Is there a way to spawn a new thread on each iteration rather than reusing the existing thread, as the CSV does execute once for each "User"[thread]. I also tried Stop on EOF : True, but that stopped the second loop.
Aim is to eventually ramp up the user count and the number of loops (changing to forever); with there being about about 100 different combinations of data to be inserted on each loop. The formula I am using has time and thread number to give me data uniqueness along with other data that is dynamically created from a formula. Recycle on EOF is not feasible as I need to regenerate the csv contents on each loop. A super-csv I don't think is feasible to cover the load and soak scenarios.
Thanks in anticipation. Andrew
I don't think it's possible to "reset" the CSV Data Set Config, it's a configuration element hence once it reads the file in its current state it will "stick" to its content.
If you're manipulating file content dynamically I would rather recommend going for __CSVRead() function instead which is evaluated in the runtime just where it's placed therefore it doesn't reserve file and it "rewinds" to the beginning of the file when the last line is read.
More information: How to Pick Different CSV Files at JMeter Runtime
CSV Data Set Config element is executed first and only once even though you have placed it within the while controller. Hence CSV Data Set Config element is not suitable for your requirement.
You could use JSSR223 Pre-processor to work with the dynamic CSV files using a supported programming language/script (Java , Groovy)
I am unable to pick up some rows from csv i.e alternate rows are not inserted by jmeter.
for eg: my csv as following data
1)row1data
2)row2data
3)row3data
4)row4data
3000)row3000data
When i run the thread group, only data which is picked up is row1data,row3data etc but row2data, row4data data is skipped
i have tried this with different threadgroup, still result is same
csv set config i have used is as follows :
I have tried sharing mode as current thread, all thread in csv data set config
Any chance you have a comma in your CSV data set config? If yes, JMeter will consider it as the CSV delimiter hence you will get incomplete data or a "skip"
You can increase the JMeter logging verbosity for the CSV Data Set Config by adding the next lines to log4j2.xml file (lives in "bin" folder of your JMeter installation)
<Logger name="org.apache.jmeter.config.CSVDataSet" level="debug"/>
<Logger name="org.apache.jmeter.services.FileServer" level="debug"/>
JMeter restart will be required to pick the changes up, once done you should see what's going on under the hood in jmeter.log file
If you just need to read the next line from the file with each virtual users on each iteration you need to change "Sharing Mode" to All Threads.
Alternatively (it's much easier but more resource consuming as well) you can go for __StringFromFile() function
We have used let say 500 different data for the same operation and out of which 250 are failed and other 250 is passed.
Do we have any script or method so that i can modify something in property file and segregate that failed data and write that data in some csv or excel file.
You need to create two View Results tree Listeners, with two separate files.
One with Log/Display Only: field mark as Errors and other as Successes.
This way errors and successes will be segregated.
Check out Sample Variables property. You can store JMeter Variables values for each sample result using simple configuration like:
Add the next line to user.properties file (lives in "bin" folder of your JMeter installation)
sample_variables=foo,bar
Next time when you run a JMeter test you will see 2 new extra columns in .jtl results file, foo and bar which will hold the values for the relevant JMeter variables.
This way you will be able to figure out what data presumably causes failure (if it is connected with the input data).
More information:
Configuring JMeter
Apache JMeter Properties Customization Guide
Results File Configuration
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 .....