I encountered a problem in Jmeter.
I have a scenario that I need to check, and it is to send the exactly the same http requests multiple times.
the request will not get any answer.
the problem is that Jmeter do it only once, it not even try to perform it in the second time.
I put it in a loop and still only once,
is their any solution? how can I make jmeter to perform multiple http requests.
for manual solution I use postman and send the same requests over and over again manually.
Is their any solution? I put the test plan, junk 1 + 2 + 3 are just the same call without any change, and the response is just 200, why Jmeter not run the http more than once?
[][test plan junk 2 + 3 not do]
[][loop controller set to forever]
[][all the junks are the same]
[][response of junk is 200ok nothing more]
[][no junk loop or 2 + 3 calls performed ]
[][logs]
Came across this while debugging the same issue - our problem was the "Use Cache-Control" option was ticked under "HTTP Cache Manager". This stops subsequent GET requests being processed, without an obvious warning or message.
Looking into red 1 near the yellow exclamation sign there is an error presumably connected with junk2, check out jmeter.log file for details, you should be able to identify the reason from there.
Also check your Thread Group settings, especially Action to be taken after a Sampler error parameter, if it is set to Stop Test or Stop Test Now might be a good explanation.
Normally people go for While Controller in order to repeat certain step(s), it allows to define condition(s) to exit the loop.
Related
To the left of the screenshot, I'm executing two 2 HTTP get requests (Same URL) marked in yellow. but as you see in the right side the Get request was executed only once and skipped the second time.
what am I doing wrong here?
Please check this screenshot
JMeter shouldn't "skip" requests, I can think of the following reasons:
You're running the test with more than 1 thread (virtual user) in the Thread Group, if this is the case - the sequential order of requests execution will not be guaranteed, you will need to add __threadNum() function in order to be able to distinguish the responses coming from different virtual users.
An error preventing the request from execution occurred, if this is the case - most probably the reason is in jmeter.log file (you might need to increase JMeter logging verbosity in order to get more information)
I am trying to generate a test report for a thread group.
I see that since i run a http request in while loop controller, the request shows up in the report with too many failures as i also have an assertion to the request.
These are not failures but, tries, how do i make sure that these dont get captured in the report.
I am using View results in table listener for report. I tried to remove assertion for this http request so that it is not captured in the report? Is this the right approach?
As per 9 Easy Solutions for a JMeter Load Test “Out of Memory” Failure article:
Use Assertions Sparingly
Every test element added to the test plan will be processed - and this takes CPU time and memory. This also applies to all your Assertions, and is especially true for Compare Assertions - which consumes a lot of resources and memory. Only use the assertions you need and, even then, just use the amount that are absolutely required.
So removing the assertion seems to be a right approach to me.
Also if it's a Response Assertion you can modify it to accept 2 (or more) criteria so you can configure it to not to fail on "tries", example setup which accepts HTTP Status Codes 200 and 501 and will fail for everything else:
Getting the following error in JMeter while running the list of APIs (with no of threads:1-140 with ramp up period-1).
Response code:500
Response message: Internal Server Error
How should I overcome this Error Response code in order to get the accurate response?
What should do to decrease amount of response with this response code?
In general a 500 is an unhandled response on the part of a developer. Usually on the backend but also on the performance testing tool front end.
Ask yourself, are you validating responses that come back from the server for appropriate content? I am not just suggesting an HTTP200 is valid. You need to check response content to ensure that it is what you expect is valid for the business process, for you can have a completely valid HTTP200 class page which contains a response which will send your business process off the rails. If you do not handle the exception on the part of the unexpected response then you will find that one to two steps down the road in the business process then you are pretty much guaranteed that you will find a 500 as your request is completely out of context with the state of the application at that point.
Test101, for every step there is an expected and positive result which allows the business process to continue. Check for that result and branch your code when you do not find that the result is true.
Or, if this is a single step business process then you are likely handing the service poor data and the developer has not fully fleshed out the graceful part of dealing with your poor data.
The general advice in JMeter is Ramp-up = number of threads, in your case 140
Start with Ramp-up = number of threads and adjust up or down as needed.
Currently you are sending every 1/140 seconds new thread which is almost simultaneously, the reason to the change is:
Ramp-up needs to be long enough to avoid too large a work-load at the start of a test
Status code - 500 comes from server/API's and it's not an issue of Jmeter. Sometimes the concurrent requests are rejected by server as it's too weak to handle that number of requests.In my case, I asked my server team to scale up servers so that we can test the underlying API . It's worth mentioning that sometimes Jmeter also runs out of memory. You can do some tweaking in set HEAP=-Xms512m -Xmx512m property of jmeter execuble file. Also listeners consume too much resources.Try not to use them.
i have a issue with to many calls to the server.
I have extracted several urls with the "regex extractor".
In the next step, a "http request" calls these urls by ${extractet-urls}
But all requests after the 8th url gets a error 500 response from the server.
I tried to input several timers between, before and everywhere else, but it hasn't an impact.
So my question is:
how can i delay in this single http request which calls all the extracted urls?
Thanks for your help :)
After the requeat you can add sampler ->Java Request. Then change classname to SleepTest and it'll wait 1 second (configurable)
Add a Constant Timer as a child of the HTTP Request sampler (see Scoping Rules for details) and provide desired delay there (in milliseconds). It will cause the relevant thread to "sleep" for the defined amount of milliseconds before executing the HTTP Request. See A Comprehensive Guide to Using JMeter Timers to learn more about using Timers in JMeter tests.
Another option could be using Test Action sampler to create a delay, it doesn't generate sample result so you won't see it in .jtl results file.
The final approach is depending on what you're trying to achieve and how your test is designed.
Alternatively, you can add a Thread Group and define a ramp up time, then put the request inside this group. The ramp up time takes the startup overload too.
Need some help on Jmeter for the following scenario please I need to simulate these steps in order to load our application.
a) make a request to a web-service.(done)
b) verify the response for some variables and extract a URL address from the response.(done)
c) Now using the extracted URL need to make another request.(extraction done)
d) in response a media file will be sent.
My Plan consists of "stepping thread group-->(Sampler 1)HTTP Request +couple of listeners for data gathering--> (Sampler 2)HTTP Request +couple of listeners for data gathering. the issue is that when i ran the plan the first sampler generated 4 requests but the second one generated only 2 can you tell me why is it so.
In general how can i simulate all 4 steps in one go for a single thread. I hope that i have cleared myself.
In JMeter each thread runs requests sequentially already.
So in order to do what you expect you'll need to use:
Post Processors called extractors to extract data into variables
Variables to inject in the requests
Read:
https://jmeter.apache.org/usermanual/test_plan.html#postprocessors
https://jmeter.apache.org/usermanual/functions.html#functions