I have a jmeter test plan file with following structure
My aim is to do SFTP get with different username and password that run in parallel using parallel controller. The username and password are stored in a CSV.
How to achieve this? as far as I know the parallel controller won't loop a csv sequentially like a common thread group so I can't store the username and password into variable then use it in my parallel controller. Thanks in advance
I fail to see why you would need the Parallel Controller, if you want to execute SFTP requests concurrently just add more threads in the Thread Group.
If you want to run single request by multiple users at exactly the same moment - take a look at Synchronizing Timer
Related
I have a work flow designed in JMeter, which I want to execute parallelly. Please refer the image attached. One way to do it that I can use distributed load system and execute the same test plan parallelly. But I have only one machine. Currently I am using parallel controller for executing this and I wonder there must be intelligent way of handling this. Any help on such ?
I don't think your setup is correct, the Parallel Controller executes its children in parallel, it means that
"User 1" will be executed first and all these requests like Retrieve bearer token, retrieve country details, etc. will be executed at exactly the same moment so if retrieve country details requests needs the token - it will fail
"User 2" will be executed after "User1" completion
So I would recommend:
Get rid of the parallel controllers (unless I misunderstood something and all these 5 requests really need to be executed at the same time)
Get rid of these User1, User2, etc and instead parameterize your test using i.e. CSV Data Set Config so each JMeter thread (virtual user) would get its own credentials from the CSV file
Define the required amount of threads (virtual users) and loops (or test duration) on Thread Group level
this way JMeter will start 5 threads (virtual users) in parallel and they will be executing Samplers for 100 iterations or 300 seconds
I am new to JMeter. I have two scripts one script is web and another is a rest api call which posts metrics to server. Both the scripts are working fine. Now i wanted to implement a scenario.
Web Script should run first once the script is completed i need to capture test metrics like start time, end time, load rate (No.of threads), Pass or fail save to a variable and pass these values to the rest api call which will then run and post the metrics to the server.
Any help is appreciated
Start time - can be obtained as ${TESTSTART.MS} JMeter pre-defined variable
End time - can be obtained via __time() function, if you call it somewhere in tearDown Thread Group it will report the time when all the main Thread Group(s) are done
Number of threads - it's a kind of weird requirement because its you who define the number of virtual users. Anyway, you can obtain it at any moment of time using i.e. __groovy() function like:
${__groovy(ctx.getThreadGroup().getNumberOfThreads(),)} - returns the number of threads which are active currently
${__groovy(ctx.getThreadGroup().getNumThreads(),)} - returns the number of threads which are defined in the Thread Group
As you are planning for the given scenarios you need to do following things.
1) You need to user jp#gc listeners to measure the results in (response time, threads per minute/seconds, hits per second and many more)
You can find the list of listeners here >> https://jmeter-plugins.org/wiki/GraphsGeneratorListener/
2) You need to implement the test plan using regular expression extractor for taking values from the response requests which you can store in the variables and later pass on to the dependent requests. for documentation visit https://jmeter.apache.org/usermanual/regular_expressions.html
For general understanding you can go through the jmeter official documentation
https://jmeter.apache.org/usermanual/get-started.html
I hope it will help you
I would like to have my tests parametrized so I could run the very same test with different number of users. I know that I could define some user-variable in my test plan, but I would like a solution which would be more friendly for a regular user (who doesn't know JMeter at all).
I've tried using CSV configuration but it appears that I cannot inject (${numberOfUsers}) into thread group. Is there any workaround? Maybe I could pass number of users when running my test from command line?
Ok, turned out to be really easy-peasy. Instead of acutal users number I set something like this ${__property(myPropertyName)} in my thead group in JMeter. Then I run my tests like :
jmeter -t path/to/test.jmx -JmyPropertyName=10
And the test group would have 10 user.
I am trying to run http samplers sequentially for multiple requests. Where the output of 1 API response is the input of next API request. My concern is when I run with 5 users (for. e.g), then at given point of time it first executes 1st API with 5 users then second API with 5 users, in this process the API where input is required gets lost. Please help me on this. I need a solution, where all the samplers are first executed for first user, then for second thread all the samplers are executed and so on.
Dzizu is correct, threads are independent so you are going to run into problems with this approach.
Since you are using 5 users across the test, it would be better to have one thread group with 5 users, and then have Simple controllers (or Transaction controllers) that hold the HTTP samplers and whatever else you are using. This will ensure that the samplers are executed concurrently, but they can still share data if required.
Simple example below:
Threads usually are independent. The easiest way in my opinion is to put full process in one thread and then multiply threads in thread groups.
Eventually I tried to solve this by using loop count option. For example if I want to simulate 5 users in 1 second, I set values as loop count=5,threads=1,ramp-up=.2.
This worked for me so give it a try.
Use the Transaction Controller or Simple Controller to group your samplers together and run them in sequence without worrying about the number of threads. For me, it is working as expected :).
I have a system that should be able to handle millions of users requests concurrently. In order to check how the system handles the load, I setup a cluster of JMeter servers (slaves), and one controller (client).
I have a database of all users (~10M), and I need each request sent to be from a different user.
I am wondering how I can implement such a thing in JMeter. Basically, I thought about dividing a range of users (let's say 100,000) per each slave, and then within a given slave, each request should read a new user from the local 100,000 list, and delete it. Thus, I will eventually send a request from every user.
The thing is while this idea sounds logical theoretically, I do not exactly know how to implement it using the JMeter terms. Also, I am not sure how to read from database in the test, although I could theoretically read it in advance into a text file, and have each slave contain the text file with its 100,000 users portion.
I can setup a very large cluster of machines, so scale will not be the issue here. Just how to set it all up.
The best way to provide Jmeter with a list of parameters is to use a CSV file:
http://jmeter.apache.org/usermanual/component_reference.html#CSV_Data_Set_Config
You can configure the CSV dataset config to do make every thread use a different line in the CSV. Each engine will need to have it’s own unique CSV file, because the sharing mode does nto work between engines in distributed testing (you can try to automate this part, this can be interesting to do :) ).
This is how your script should look like:
1. Thread Group
1.1 HTTP sampler (login)
1.1.1 CSV dataset config
1.2 second http sampler
etc...
The login sampler will use the parameters loaded by from the CSV file, so for every ’login’ it will use a different line.
Distributed testing is pretty simple:
http://jmeter.apache.org/usermanual/remote-test.html
Keep in mind that running 100K concurrent users on a single Jmeter load engine will be hard (Jmeter consumes resources on the server, so you will need lots of CPU and memory). So you should also monitor the engines.
Also 1M users will cause a lot of data that the engines will send back to the console, so you might need to start a bunch of distributed tests in parallel, and at the end aggregate the results.
Cheers,
This is can be implemented by doing the following steps:
Taking the user credential dump and saving it to a csv file
split the csv file. copy 1 file to each Jmeter slave, in the same location on all the
machines e.g. "C:\Loadtest\"
from the controller, give the path of your csv file in "CSV Data Set Config".
Run the Test.
By doing the above steps, Jmeter controller will start execution of the test by pointing all the Jmeter Slave nodes to use the CSV file in the same location "C:\Loadtest\".
But the trick here is that all the machine will be using different set of users.
Hope this will help.