Performance Testing Interview Questions

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Performance Testing Interview Questions
JMeter Interview Questions

Hi Raghav.
Have one query.
Today I have given one interview for performance with Jmeter.
The interviewer asked me how we will do end to end performance testing. ?
How to convince a client that performance testing is necessary for you.
How to test with 1000 user, what all approaches to follow?

Can you give me answers to all these

Please help

Thanks
Utkarsh

_________________________________________________

How we will do end to end performance testing?
First thing will be to clarify on what is meant by end-to-end performance testing and what is in scope.

So first you will create a plan as per the in-scope items.
Scope | Expected Load | Geographical distribution |
You will need a separate env for performance testing.
Will analyze and take up the modules/scenarios where performance needs to be checked most.
While setting up performance test you will need information on:
min, max, avg load expectations.
geographical distribution
You can start with Network API calls test and can go to UI level.

How to convince the client that performance testing is necessary for you?
Here if you can provide some specific and generic examples, that will help you.
Usually, in an organization, examples are given of past projects where performance testing helped to make the application efficient and helped to avoid performance issues in production.
You can also give some ROI calculation like with Automated performance testing you can create 1000's of virtual users and can test the impact without creating a costly infrastructure.

How to test with 1000 user, what all approaches to follow?
We never start directly with max user load.
First, create a sample test plan and test it with single or max 10 users.
Get it approved and then increase the count gradually.
Also ensure this test is performed on a separate environment, so not to compromise on any existing env in use by other teams.
After this, you should run your tests for 100 users, 200, 500, 700, 1000 etc. This no can vary based on application performance and infrastructure.
You should also get some SLA for comparison of your results. Else you need to create a baseline first and then compare your subsequent results with this baseline.
Suppose you get a huge time with 100 users on some request which is not expected, then you can share the results and ask if you should proceed with more users or wait until the issue is fixed.

So overall, Utkarsh, you have to show your experience and observation skills here. No one is expecting a perfect answer (most of the cases the other person also does not know it).
You should know what you speak as there can be a counter question.
With experience, you will know it all.

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[esumitkumar]

Raghav, you are an awesome person and guruji for all who want to learn automation testing..Thanks a lot !

[MudasirSQA]

sir thank you again. I am doing performance testing now a days. your videos are really helpful.

[divyanair]

Hi Raghav, I was asked this question in an interview "What is Throughput in JMeter and how to explain it to a client who doesn't have technical knowledge.

[truth_]

this is soooo helpful. thanks to you "
Automation Step by Step - Raghav Pal" and the person who asked those questions.

[vinaykumar-updc]

Thanks you so much Raghav and you YouTube channel is very helping a lot of people. Please do one video for performance test plan.

[BroERNESTOX]

Good content, you are on it. came up on your video while searching for Jmeter. 😉

[venkateshenumula]

How to prepare load test plan, When a system is being accessed from a different geographical location across the world?

[ManishKumar-czlp]

Hi Raghav, I am very fond of your videos, the way you explain and puts depth, its amazing. I have to know how big e-commerce company like Amazon, Flipkart use the performance plan and how they decide the baselines and which performance tools prefer, I want to know through this Jmeter capability of creation of virtual users and subsequent uses.. Thanks

[saribshamim]

Nice way of teaching. Great video man. Keep it up

[amire]

Hey Raghav, i was wondering how did i missed your videos until now.
I am watching first time and thank you for the detailed explanation, it really helps.
Can you please do videos on Linux and basics of ssh as i am new to Linux world and finding hard time to learn it.
Thank you!!

[sahanaharish]

Thank you so much the questions and confidence :)

[sainiranjan]

Hello Raghav, Could you please add a sample example video of how does report looks like for performance testing using excel ?
Thank you

[praneethg]

The tips are very good. Thanks, Raghav.

[FunMagic]

Hi Raghav Sir,

Your videos are very nice and comprehensive. I have a question related to API testing and this has been asked to me by many of the interviewers. Question is " There are 2 APIs and the functionality is from one API some random sets of data (say 10000 or records) would be send to another API one by one. How would be perform the testing on it. Please have a look and answer this question. Would be helpful if you can share the solutions through both Jmeter as well as Postman.

[FernandoFlores-bvux]

Great video bro! nice answers to those questions

[lifeindubaiwithtarang]

I often encounter questions in interview like " what are the attributes or parameters we need to take into account while doing perf testing? How to analyse if any performance issues and how to improve the performance?""...can you please help how to answer this?

[rajkumarjana]

Hi raghav
I have a qstn..
If pt environment gets delayed and now your time line reduces by a week. Wat will be your actions to compensate the time lost..how will you overcome the delay

[sayalividhale]

Can u please tell what challenges we do face while doing performance testing?
Thanks🙂

[jenits]

Hi can you give the answer for best values or metrics of performance for valuating a SAAS application ???...Like this much load should give response in this much time and elapsed time

[kavyamanju]

Hi Raghav, thanks for the realtime interview questions vedio. I am working as Manual tester in one of the MNC now i am learning Performance testing(Jmeter) through your vedios. Thinking to switch the company with performance testing and meantime i am afraid how to crack the interview as i dont have any hands-on performance testing experience in project..?, it will be really helpful if you reply to this comment.