Execution behavior of Jmeter sending HTTP request to server - jmeter

I have a Login transaction where in this there are 10 requests. I have added a Uniform random timer for Login transaction for 2 to 3 seconds. i.e all these 10 request will wait for 3 seconds before sending the request as below.
wait for 3 seconds sends Request1
wait for 3 seconds sends Request2
wait for 3 seconds sends Request3
and so on.
So my question is does Jmeter waits for the response before sending the next request. i.e will Request2 waits for the response or will Request3 is sent after 3 seconds irrespective previous requests response. in this case Request2's response.
Please help in this.
Thanks in Advance,

JMeter will wait for response from previous request prior to sending next request in any case. In normal conditions it would look like:
Request 1
Request 2
Request 3
...
See A Comprehensive Guide to Using JMeter Timers article for more information on how Timers work.
By adding a Timer you create a "sleep" before each request, it will look like:
Sleep 2 - 3 seconds
Request 1
Sleep 2 - 3 seconds
Request 2
Sleep 2 - 3 seconds
Request 3
...
However as per documentation:
Each thread will execute the test plan in its entirety and completely independently of other test threads. Multiple threads are used to simulate concurrent connections to your server application.
So if you have > 1 thread you may run into the situation when different threads are executing requests at the same time (which is the main point of load testing).

Related

Run threads sequentially in multiple thread group and thread group in parallel - JMeter

I need to setup an test with respect to following scenario
Thread Group 1(Stepping thread group) (HTTP request 1 should continue for 5 min, THEN Http request 2 should be picked up for 5 min and finally for http request 3 - i.e 15 min test)
HTTP Request 1
HTTP Request 2
HTTP Request 3
Thread Group 2(Stepping thread group) (HTTP request 4 should continue for 5 min, THEN Http request 5 should be picked up for 5 min and finally for http request 6 - i.e 15 min test)
HTTP Request 4
HTTP Request 5
HTTP Request 6
Thread Group 3(Stepping thread group) (HTTP request 7 should continue for 5 min, THEN Http request 8 should be picked up for 5 min and finally stop - i.e 10 min test)
HTTP Request 7
HTTP Request 8
All of the above thread group should run in parallel as a test plan
How to achieve or setup the above scenario in a testplan
For running thread groups in parallel make sure that on Test Plan level
For running a Sampler for 5 minutes put it under the Runtime Controller
Another option is just moving the requests into separate Thread Groups, if you need to pass any data between them - go for Inter-Thread Communication Plugin

Jmeter - Until request gets success execute max. 60 requests in 5 minutes with 5 seconds pause

I have one request, which triggers every 5 seconds and maximum for 5 minutes until it gets 200 in response code. So ideally that request executes 12 times in a minute and 60 requests total if it fails everytime.
My problem is how I define those maximum 60 requests.
Here is my configuration
I have taken one While Controller
${__javaScript(parseInt(vars.get("Response_code"))!=200)}
In that while controller this components are there,
While Controller
User Defined Variable (Response_code)
Counter (Starting value: 1, Increment:1, Maximum Value:60)
My HTTP Request
JSR223 PostProcessor (vars.put("Response_code",prev.getResponseCode());)
Constant Throughput Timer (Targer throughput: 12.0)
Where should I have to put condition like if my HTTP request gets success in 3rd attempt go ahead to next request else repeat that request again after 5 seconds till 5 minutes?
I am using jmeter Ver. 5.5
You can amend your While Controller's condition to look like:
${__javaScript((parseInt(vars.get("Response_code"))!=200 && ${counter} < 60),)}
this way it will loop until response code is 200 but not more than 60 times.
Instead of Constant Throughput Timer you can use Flow Control Action sampler to introduce static delay of 5000 ms.
There is no need to have a counter, While Controller exposes a special variable, in your case it will be ${__jm__While Controller For Thumbnail-1 QA1.pdf__idx}
More information: Using the While Controller in JMeter

Group multiple HTTp samplers as one transaction, and have constant throughput

In my application, I would like to combine a group of HTTP samplers as one transaction, and have a constant throughput on the group.. ie. when I created a thread group with multiple HTTP samplers and defined a constant throughput timer in the group, I am seeing that it is considering each HTTP sampler separately...
Test Plan
ThreadGroup
----> request 1
-----> request 2
-----> request 3
------> constant Throughoput timer ( 1.0 req per min)
It executes as :
-----> request1
wait 60 secs
------> request 2
wait 60 secs...
----> request 3
...
what I would like
-----request 1
----- request 2
------ request 3
wait 60 secs
----- request 1
---- request 2
----- request 3
wait 60 secs
Depending on what exactly you're trying to achieve:
You can put the requests under the Transaction Controller and tick Generate parent sampler box:
Another option is adding Flow Control Action sampler as the 4th sampler and put the "wait for 60 sec" there
And finally you can put a Constant Timer as a child of the 1st Sampler:
use flow control action at the end of the requests
for better understanding difference between timers & flow control action, please go through this video
https://www.youtube.com/watch?v=miZGLaAq4UQ&t=301s

Sequential test execution jmeter

I want to run 2 day test and I am making use of Thread Group Start time and end time feature.
I am looking for design as shown below :
Thread Group 1 (First day start and end time with date)
--> HTTP Request 1 (Execute for 30 minutes)
--> HTTP Request 2 (Should start after 30 minutes i.e. after first one is terminated)
--> HTTP Request 3 (Should start after 60 minutes i.e. after second one is terminated)
Thread Group 1 (Second day start and end time with date)
--> HTTP Request 1 (Execute for 30 minutes)
--> HTTP Request 2 (Should start after 30 minutes i.e. after first one is terminated)
Thread Group start and end times are absolute, therefore you will be able to execute the test only once without editing it. I would rather recommend sticking to relative times like:
Thread Group, 2 loops
Runtime Controller configured to run for 1800 seconds
HTTP Request 1
Runtime Controller configured to run for 1800 seconds
HTTP Request 2
Runtime Controller configured to run for 1800 seconds
HTTP Request 3
Flow Control Action sampler configured to pause current thread for 86400000 milliseconds (24 hours)

Setting fixed delay between jmeter ThreadGroup loop iterations

I am performing load test of web component which receives files from users and later sends them back on demand. For this I am uploading files to web component with maximum number of concurrent users. I want to simulate an environment where:
100 simultaneous users will be sending continuous upload file requests to some web application. There would be delay of exactly 1 second between two consecutive requests from same user regardless of last request sent by same user is completed or not. In short 100 users will send upload file request simultaneously, then each user will wait for 1 seconds and again all 100 users will send next upload request and the process continues. I want to make this configuration with help of Jmeter.
User(1) => Send upload request, wait 1 second, Send upload request, wait 1 second, continue..
User(2) => Send upload request, wait 1 second, Send upload request, wait 1 second, continue..
User(3) => Send upload request, wait 1 second, Send upload request, wait 1 second, continue..
.
.
.
.
User(100) => Send upload request, wait 1 second, Send upload request, wait 1 second, continue..
Currently I have structure:
ThreadGroup(Number of Threads: 100, Ramp up Period: 1 second, Loop count: Forever)
----HTTP Header Manager
----HTTP Request
----View Results in Table
But each next iteration of loop waits till last iteration's requests are served successfully. I want to change this behavior so that next iteration will start even if last iteration's requests are not served yet.
Any help/suggestions/improvements are appreciated.
Use Timer in between requests
http://jmeter.apache.org/usermanual/test_plan.html#timers

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