Time between two samplers in Jmeter - jmeter

I'm trying to write a script with two users, 5 second constant time sampler between each request and 3 iterations.
For Users, Thread Group - No of users 2
For iterations, Thread Group - Loop Count 3
For Timer, Thread Group - Constant Timer 5000ms
My Hierarchy is as follows: Test plan
Thread Group
Constant Timer
Logic Controller
Action 1
Action 2
Listener View Result table
Is this approach correct, I'm unable to validate if the sampler request time is 5 seconds from the output.

You can add some extra information to your Sampler label, for example:
${__threadNum} function which returns the number of current virtual user
${__jm__Thread Group__idx} pre-defined variable which returns current Thread Group iteration
So if you modify your samplers labels to look like:
User: ${__threadNum}, Iteration: ${__jm__Thread Group__idx}, Sampler 1
User: ${__threadNum}, Iteration: ${__jm__Thread Group__idx}, Sampler 2
You will be able to see the 5 second intervals between Sampler 1 and Sampler 2 and between iterations.

Related

Jmeter concurrency issue for a Thread of 7 Users

I have 1 thread Group, Within that I have 5 HTTP Request calls. 1st HTTP Request returns a value & that value is used in rest 4 HTTP Requests. The Thread Group Set Up with Number of Thread (Users) : 7 & Ramp-Up period : 5 & Loop Count : infinite. When I run the thread group it breaks due to concurrency.
Example:
When User Thread 1 executes -> Request 1,
Thread 2 executes -> Request 2 (It expects a value from Request 1, Which has not happened for thread 2, Hence it breaks).
Please find the Jmeter SetUp Images below,
Thread
HttpCookieManager
I am new to Jmeter please help me in this.
Each JMeter thread (virtual user) executes Samplers upside down (or according to the Logic Controllers
JMeter Variables are local for the thread (virtual user)
So there is no option that Thread 1 executes Sampler 1 and Thread 2 executes Sampler 2, all users will be executing all Samplers sequentially, it can be checked using __threadNum() function:
So my expectation is that either your extractor fails or Sampler 1 execution by Thread 2 fails somewhere somehow, check the requests and responses using View Results Tree listener, the JMeter Variables using Debug Sampler and jmeter.log file for any suspicious entries.

How to delay my each thread group in JMeter (without using startup delay)

Here I have 4 Thread Groups present in my Test Plan and I have a requirement, need to run test plan in the time interval of 30 minutes between each of my Thread Group (2nd thread group should start only after 30 minutes, after the completion of 1st thread group and so on).
But cannot estimate the actual duration for all my thread groups. And my Ramp-up period should be 0 for all my thread groups, is there any solution to full fill my requirement ?
Thanks in advance
Add Test Action Sampler to the end of each Thread Group
Configure it as follows:
Target: Current Thread
Action: Pause
Duration: 1800000
Add a Synchronizing Timer as a child of the Test Action sampler and set Number of Simultaneous Users to Group by to be equal to number of threads in the current Thread Group
This way Test Action sampler will act as a "rendezvous point" so all threads in the current Thread Group will sleep for 1800000 milliseconds (1800 seconds == 30 minutes), this way you will get a 30 minutes delay between Thread Groups.
Adding to #Dmitri T answer, Make sure in Test Plan the uncheck Run Thread Groups Consecutively so it won't try to execute in parallel
You can add Critical Section Controller in each Thread Group as the parent of all other components with same name (default is global_lock)
That way no Thread Group will start until previous thread ends.
EDIT
For getting result between threads:
Add to each thread group Generate Summary Results to get the result of each thread
Generates a summary of the test run so far to the log file and/or standard output.
I use like this :
Add "Flow Control Action" steps in Sampler List to the end of the Thread Groups

Loop threw Thread Group with Jmeter

I got a thread group of 10 users. I want to to connect these 10 users to an URL path mysite.com/1.
Then I want to loop a second time on these thread group and connect them to mysite.com/2.
And I need to repeat this process 10 times (i.e until mysite.com/10)...
I there a simple way of achieving that? I've already tried to use counter but what it does is connecting user1 to /1, user2 to /2 and so on...
Add While Controller to your Thread Group and put the following expression to the "Condition" area:
${__javaScript(${counter} < 11,)}
Add Counter test element as a child of the While Controller and configure it as follows:
In your HTTP Request sampler refer the incrementing value as ${counter} where required.
See How to Use a Counter in a JMeter Test to learn how to properly generate incrementing values in JMeter tests.

Adding a delay in a thread group - JMeter

This may sound like a duplicate question but its nit, I've searched a lot before putting this here.
I have a single thread group with 10 users and 28 HTTP requests, what I want is something like:
Thread 1 --->rqst 1
Thread 1 --->rqst 2
Thread 1 --->rqst 3
.
.
Thread 2 --->rqst 1
Thread 2 --->rqst 2
Thread 2 --->rqst 3
.
.
Thread n --->rqst n
delay one minute
Start over again.
I tried using constant timer in the thread group but what i got was execution of a single request by all threads every time.
Can anyone please explain how this can be achieved.
There are at least 2 options:
Add Test Action Sampler after all requests and configure it like:
Target: All Threads
Action: Pause
Duration: 60000
Add Constant Timer as a child of rqst 1. Timers are executed before sampler so only one request will be impacted. See A Comprehensive Guide to Using JMeter Timers for more details on timers scope and detailed explanation of each and every Timer.
In both cases delay won't be included into test results
Add a beanshell timer after the last request with something like this
if (${__threadNum} == 10){
Integer WaitTime = Integer.parseInt(vars.get("WaitTime"));
return WaitTime;
}
If the last thread has started add a sleep with milliseconds from the var WaitTime.
Or take a loop at the jp#gc - Stepping Thread Group plugin.

Jmeter: Parallelly running Thread Group execution gets delayed

I have 3 Thread Groups: Setup Thread Group, Thread Group 2(which has the http request which does the download of the file), Thread Group 3 under a single Test Plan. The thread count=3 for each. The checkbox 'Run consecutively' is deselected in the Test plan.
The Setup thread group has all the pre-requisite requests which are needed to be executed prior to Thread Group 2 and 3. The Setup Thread Group(having multiple https requests) writes some authentication tokens to 2 different csv files which will then be utilized by the other 2 thread groups respectively when they get executed in parallel at later point of time. So, csv file1 will be used by Thread Group 2 and csv file2 will be used by Thread Group 3.
First, the Setup Thread Group gets executed.Then the Thread Group 2 and Thread Group 3 get executed in parallel. Everything seems fine when all of the threads of Setup Thread Group get the successful response:200.
But when there is any erroneous response like 500 in one of the Setup Thread Group thread Response, the csv files get less number of entries(which is fine); and the Thread Group 2 and Thread Group 3 do not run in parallel. The Thread group 3 runs first. Then after some time gap, the Thread group 2 runs. What's the cause and resolution for this problem?
1) Set Up Thread: Extract the response code or any response message of the Last sampler of the Set Up Thread.
2) Before proceeding Thread group 2 or 3 add some constant time and a BSF pre-processor. validate the condition of the extracted value(either response code/response message).
If the anticipated value is found, proceed with Thread group 2 and 3.
If not Add some constant time within the BSF(define a condition).
3) do the simlar approach, to wait for Thread Group-3 to ensure Thread Group-2 has ran succesfully.

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