I have the following scenario to emulate in jMeter:
100 users logging in once and doing search every 30 secs, with think time 5 secs.
How do I implement this?
Right now I have something like this:
ThreadGroup(100usrs)
+-- OnceOnlyController(LogIn)
+-- LoopControler(Search)
+-- Timer(5s)
But I have no idea how to do the 30 secs delay between the Search instances.
Is it even possible or do I have to use some workaround?
Any help appreciated.
I think you have to add another timer as a child of LoopController: Timer(30). Your search requests are under the scope of that controller and your 30s timer should be there too.
http://jmeter.apache.org/usermanual/component_reference.html#timers
If you want to have a fixed delay between the search samples whatever response time of the Sample is then Orkito solution is not the right one.
His solution will add a 30 s delay before the search sample, so if search takes more time than expected your request will run each 30s + Time taken by search sample.
If you want to have a fixed delay between the search samples whatever response time of the Sample then solution is described here:
http://blog.milamberspace.net/index.php/2008/08/15/jmeter-fixer-la-duree-de-repetition-dune-requete-87.html
It's in french but there are screenshots and translation service should do the job.
Another important point to note:
Note that timers are processed before each sampler in the scope in which they are found; if there are several timers in the same scope, all the timers will be processed before each sampler.
Timers are only processed in conjunction with a sampler. A timer which is not in the same scope as a sampler will not be processed at all.
To apply a timer to a single sampler, add the timer as a child element of the sampler. The timer will be applied before the sampler is executed. To apply a timer after a sampler, either add it to the next sampler, or add it as the child of a Test Action Sampler.
Instead of use Constant Timer you should use Constant Throughput Timer, because this timer considers also Sample time(that is the execution time of each sample).
If you use a Constant Timer, you will have delay piled from each sample execution
Related
I have a JMeter (5.3) While Controller in a 1-user Thread Group, it reads a CSV and makes http calls for each row. I want all of these to complete as fast as possible (i.e. the loop completes uninterrupted), then the thread-group should pause, then I want the csv-loop to repeat*.
This is proving oddly difficult. Adding a Constant Timer below the While and it's (counter-intuitively) executed before the loop, yet I need it run immediately at start-up then subsequently delay. Similar SO posts advised a Flow Control Action, however the Pause doesn't actually pause for me.
Others suggest adding a Constant Timer child to Flow Control, but it's utterly ignored. In both cases, the csv rows execute repeatedly with no delay at all.
Has anyone got a recipe for this: Process full csv file every few hours?
Simple to say, strangely hard to do.
My setup: The 'CSV Data Config' uses 'Recycle on EOF':True 'Stop thread on EOF':False. Flow Control Action has 'Pause' Duration: 0 with the child timer set to the desired delay.
Thank you.
* please don't ask why, just assume I truly want this.
Flow Control Action, however the Pause doesn't actually pause for me.
This is kind of weird as it does work and introduces the pause when the thread reaches the sampler.
See the below image, with the Flow Control Action sampler disabled JMeter runs requests as fast as it can and when I enable it JMeter runs requests each 2 seconds according to the configured delay
With regards to "counter-intuitively" behaviour:
As per Timers documentation:
Note that timers are processed before each sampler in the scope in which they are found; if there are several timers in the same scope, all the timers will be processed before each sampler.
Timers are only processed in conjunction with a sampler. A timer which is not in the same scope as a sampler will not be processed at all.
To apply a timer to a single sampler, add the timer as a child element of the sampler. The timer will be applied before the sampler is executed. To apply a timer after a sampler, either add it to the next sampler, or add it as the child of a Flow Control Action Sampler.
Timers also obey JMeter Scoping Rules
I don't know if I have placed the timer at the correct location. I am not able to get Precise Throughput Timer working.
Any JMeter component needs to be placed according to JMeter Scoping Rules
How do you expect the timer to "work" given you have only one thread and one iteration in the Thread Group especially given your test finishes in 500 milliseconds and you configured the test duration as 500 seconds
If you want to limit your test throughput to 1 request per second for 1 thread and 1 iteration only - I can only think of introducing pacing as none of the existing timers won't be able to do this given that short test duration
Constant timer I used but I confused with the execution of contestant timer. there are many request under one TR Controller so If I use contestant timer the given time will apply to all request of TR Controller.
Which Jmeter timer and how I should use to it in the real scenario while execution of jmeter execute.and make sure it should be exclude to the response time.
Pl see the below Image and imagine this is the my scenario.
Thanks a lot in advance
Please find the below screen shot to use the constant timer for each and every request.
You can use the constant timer for the services which ever you want.
Try this where ever you need to add the think time and execute, it will consider only for the requests(where ever you add that timer).
If you add it to the TR controller it will consider the think time for every request under controller.
The simple one is add a constant timer value 5000 at the level of HTTP Samplers
Thread Group
-------------
>LogIn
>DashBoard
>Click On details Link
>Info Page
If above is Your Test plan
then Right click on ThreadGroup-->Add-->Timer-->constant Timer and provide value 5000
In this case the constant timer acts between each http request your are sending
i.e., it sends Login and waits for 5 seconds and it sends Login action and waits for 5 seconds and it sends Dashboard page and waits for 5 seconds and on and on ..
Note : The constant timer element must be sibling to HTTP sampler , but not as a CHILD.
please let me know if you required further info on this .If it helps click answered
I have a JMeter test executing a series of actions that I'd like to pause between.
It's currently set up like this:
Thread Group
+---Transaction controller
+---Sampler executing request
+---Test Action
+---Uniform Random Timer
+---Sampler executing request
+---Test Action
+---Uniform Random Timer
(etc.)
The test actions don't seem to cause any pauses. I have the test actions themselves set to pause the current thread for 0 milliseconds, and the timers to 60 seconds constant pause + up to 30 seconds random pause.
The actual result of running this is that it hops directly from sampler to sampler without pausing at all. What am I missing?
(ETA: This is JMeter 2.13, if that matters.)
Can you confirm that you use time in milliseconds in the Uniform Random Timers, to wit:
Random Delay Maximum: 30000
Constant Delay Offset: 60000
As if you have 30 and 60 correspondingly - the delay happens, but you are not detect it visually. Check "Sampler Start" times in View Results Tree listener to see start times.
Can you double check Transaction Controller configuration? By default timers, pre and post-processors execution time is not being included into report so the delay might happen but you just don't see it. You can include timers duration by checking "Include duration of timer and pre-post processors in generated sample" box
And finally you can also remove Test Action samplers as they're not required. If you put timers as children of "Sampler execute request" the timers will be executed before the requests. See A Comprehensive Guide to Using JMeter Timers guide for more detailed information on timers use cases.
I've a JMeter Script that does the following:
User registers to the site filling out a form with personal information
Reads through Terms, Condition and agrees to the Agreement
Reads through the instructions and answers practice questions before taking the test (next step)
Takes a timed test of multiple choices for 10 minutes and submits answers.
As you can imagine, they require different delays. Users take 1-2 minutes to fill-out the form. Usually goes really quick through the terms and conditions (less than 30 seconds) and hits 'I Agree' button. Then spends 4-5 minutes in reading the instructions and taking the practice tests (I measured, takes approximately 4-5 minutes) and finally takes the 10 minute timed test.
Now, question is: how do I insert these different time delays between different page requests? I saw some posts that shows how to insert variable time delays to 'ALL' pages. But for me that doesn't help. Please see attached image of what I ideally intend to do.
Can anyone please help? Thanks in advance!
--Ishti
I think I got the answer. It's actually in the Manual itself at:
http://jmeter.apache.org/usermanual/component_reference.html#timers
Note that timers are processed before each sampler in the scope in which they are found; if there are several timers in the same scope, all the timers will be processed before each sampler.
Timers are only processed in conjunction with a sampler. A timer which is not in the same scope as a sampler will not be processed at all.
To apply a timer to a single sampler, add the timer as a child element of the sampler. The timer will be applied before the sampler is executed. To apply a timer after a sampler, either add it to the next sampler, or add it as the child of a Test Action Sampler.