Hi I am new to JMeter.
Is it possible that I can input a CSV file (with 25 rows of unique customerID number) and use many HTTP (GET) URL request simultaneously for every row in the csv file?
Thank you for your response in advance.
Assuming that you have one thread group, with n threads, what you describe is the default behavior of CSV data set when you set the sharing mode to All threads. Every thread, will pickup the customer id from next line of the file.
Please see following link for details.
http://jmeter.apache.org/usermanual/component_reference.html#CSV_Data_Set_Config
Related
I want to use 100 concurrent users in one thread group in Jmeter. but I want to each thread to use different user login password. how to achieve that?
full credit to Apache Jmeter documentation:
Some test plans need to use different values for different users/threads. For example, you might want to test a sequence that requires a unique login for each user. This is easy to achieve with the facilities provided by JMeter.
For example:
Create a text file containing the user names and passwords, separated by commas. Put this in the same directory as your test plan.
Add a CSV DataSet configuration element to the test plan. Name the variables USER and PASS.
Replace the login name with ${USER} and the password with ${PASS} on the appropriate samplers
The CSV Data Set element will read a new line for each thread.
UPDATE documentation link
https://jmeter.apache.org/usermanual/best-practices.html
There are multiple options depending on where do you want to keep the credentials.
The most commonly used approach is storing login/password combinations in the CSV file and using CSV Data Set Config for reading them. By default each JMeter thread will read the next line from the file on each iteration
If your credentials are in the database you can use JDBC PreProcessor
If you plan to run your test in Distributed Mode and don't want to worry about copying test data to all slave machines - there are HTTP Simple Table Server and Redis Data Set Config
More information: JMeter Parameterization - The Complete Guide
We are trying to establish no of threads depending on the number of columns present in a csv file, and each thread should pick up data from respective rows of those columns.
can someone help us out in achieving the same.
So from the attached screenshot we would want 6 threads to be established and thread1 should be posting data under user1 itself, thread2 from user2 and so on.
To achieve this you can use CSV Data Set Config
How to set CSV Data Set Config?
Right Click on thread group
Navigate to Add > Config element
Click on CSV Data Set Config
Create one csv or txt file and CSV Data set config as per below attached screenshot.
Whenever you want to user your values, just provide ${user1}, ${user2} and so on.
For more details you can refer CSV Data Set Config from user manual.
I have a use case where 10000 users are hitting the API sequentially.
first 1000 users/sec are hitting an API then they hold for 10-15 seconds and again another 2000 users are going to access the api.
Issue is i have an api <path>/user_id/${userId} and i have 10000 user ids stored in a .csv file
how fetch the file for every 1000 users at first set and 2000 users in the next?
I have added CSV Data set Config and i have the .csv file path
Below screenshot is my .csv set config.
Beanshell error
GetUserID API
Ashu
To pick first 1000 userIds for first 1000 threads and and next 2000 userids for next 2000 threads and so on follow this steps
Create a csv file with only userIds(Do not mention the column name in csv).
To the JMeter test plan add a simple thread group and bean shell sampler to the thread group.
Add the following code to the beanshell sampler
above code will add UserIds to JMeter properties.
now to pick userIds use
${__P(user_id_${__longSum(${__threadNum},-1,)})}
I have created a sample test plan to pick only first 10 values from csv for the first minute and pick next 10 for the next minute you can see the screenshot here
I would recommend run the tests in cloud.
Please follow this link to know more
How to login multiple users with different input in different threads in Jmeter using CSV data set config?
I have added CSV data set config but the thread is picking only the first entry and i m not able to see the responses for other user login
If you use CSV data set config which contains parameterized values which users(threads) will use while running script.
below is snapshot of jmeter of csv data set config which contain emp.csv file which contains values like,
nachiket,101,test
nikhil,102,test
harish,103,test
which are empname,empid,passwd respectively for 3 users.
if you run test with 3 users then thread1 will pick first and 2nd thread will pick 2nd val so on and you can repeat the file if it has less values than no of threads.
You need to provide enough loops/iterations as given one iteration only CSV Data Set Config will read only the first entry.
Try putting the request you want to parametrize under a Loop Controller, set enough loops and see whether it resolves your issue.
See Using CSV DATA SET CONFIG guide for more details.
I want to simulate a few hundred http request each with a different token and userId which I have in a database table.
What's the best way of setting up a jMeter load test to do this?
You can use JDBC Sampler to extract you data from DB to create a CSV and a JSR223 Sampler using groovy (add groovy-all.jar in jmeter/lib folder) to write the extracted values to a CSV file.
Then in the real plan , use CSV DataSet Config using the generated file.
Depending on how you want to use the dataset, you will play with Sharing mode attribute.
If you want to do both steps within the same plan you can use a Setup thread Group that will contain the JDBC Sampler part to write the CSV File, this will use 1 thread and then
the other part in regular Thread Group that will use the number of users you need.
One way is to put all your parameters into a csv file and use CSV Data Set Config in jmeter. Right click on the thread you have created - add- Config Element- CSV Data Set Config. Remember you need to set the Number of Threads(users) to match the number of users in your CSV file.