Performance Testing Interview Questions and Answers (Latest): For Fresher’s & Experienced

Performance Testing Interview Questions and Answers | Performance Testing Interview Questions and Answers For Freshers | Performance Testing Interview Questions and Answers For Experienced | Top Performance Testing Interview Questions | Performance Testing Quiz with Answers

Performance Testing Interview Questions and Answers | Performance Engineering Interview Questions: In this article, we will be exploring the most commonly asked performance testing interview questions for both freshers and experienced professionals. Performance testing is a process of testing applications for non-functional requirements. A computer’s performance is one of the key indicators to determine how successful it is in the market. Learning the most frequently asked interview questions will help you prepare and proliferation your chances of getting hired. Here we have listed several performance test interview questions and aspect at some sample answers to help you during your interview. Here you may get the Upcoming Interview Questions

General Performance Testing Interview Questions

  • Tell me about yourself.
  • Why did you leave your last job?
  • What is your greatest strength?
  • What are your weaknesses?
  • Where do you see yourself in five years?
  • What excites you about software testing?
  • What would your supervisor say about you?
  • How can you contribute to this organization?
  • What are your greatest achievements?

Interview Questions About Experience & Background

  • Do you think there is a difference between hard work and smart work?
  • Do you prefer to work independently or in a team?
  • What are your hobbies outside of work?
  • What experience do you have for this position?
  • Describe your relevant experience.
  • How did your past work experience prepare you for the job?
  • How to handle stressful or stressful situations?
  • What are your salary expectations?
  • What extra training did you take to improve yourself?
  • What did you like most about your previous job?
  • Can you talk briefly about your previous projects?

Performance Testing Interview Questions & Answers For Experienced & Freshers

  • What is Performance Testing?
  • Difference between Performance Engineering & Performance Testing?
  • What is performance tuning? What are the types of Performance Tuning?
  • What is Load Testing?
  • What is Scalability/Capacity Testing
  • What is Volume Testing?
  • What is Stress Testing?
  • What is Soak/Endurance Testing?
  • What is Spike Testing?
  • What are some common performance problems a user faces?
  • What is profiling in Performance Testing?
  • Name some common performance bottlenecks.
  • What are the entry and exit criteria for Performance Testing?
  • What involves in the Performance Testing Process
  • When should we use performance testing?
  • Why should we automate performance testing?
  • Give some examples of Performance Test Cases
  • What are the phases involved in the Performance Testing Life Cycle?
  • Difference between Functional Testing and Non-functional Testing?
  • Difference between Performance Testing, Load Testing & Stress Testing
  • What are the different types of Performance Testing?
  • Name some parameters considered for Performance Testing.
  • What are the factors considered for selecting performance tools?
  • What is throughput in Performance Testing?
  • What do concurrent users mean in performance testing?
  • What is the protocol for performance testing?
  • What is the correlation in performance testing?
  • What is Benchmark Testing in performance testing?
  • What is baseline testing in performance testing?
  • What is Benchmark Testing in performance testing?

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Performance Engineering Interview Questions And Answers

Q) What is performance testing?

ANSWER:  Performance is tested for quality assurance. software applications involve testing to ensure that the software performs well under expected workloads.

Characteristics of performance testing include

  • Speed: This determines whether the application responds quickly.
  • Scalability:  It determines the maximum user load that the software application can handle.
  • Stability: It determines whether the application is stable under various loads.

Q) What is the need to choose Performance?

ANSWER:  To evaluate performance based on applications, we need performance testing. These evaluations are performed under certain stress and load conditions. Response time relative to user activity is commonly used to measure performance testing. The entire system is tested under high pressure and load conditions

Q) Mention different types of Performance Testing?


  • Load testing
  • Stress testing
  • Endurance testing
  • Spike testing
  • Volume testing
  • Scalability testing

Q)  Mention the Tools used for Performance Testing?


  • QA Load (Compuware)
  • Load Runner (HP)
  • Web load (Rad view)
  • Rational performance tester (IBM)
  • Silk performer (Borland)

Q) What are the common performance bottlenecks?


  • CPU Utilization
  • Memory Utilization
  • Networking Utilization
  • S limitation
  • Disk Usage

Q) Mention the important parameters considered for performance testing?


  • Response time
  • CPU interruption per second
  • Committed memory
  • Memory usage
  • Processor usage
  • Bandwidth
  • Memory pages
  • Network output queue length
  • Thread counts
  • Top waits, etc.

Q) What are the factors for selecting Performance Testing Tools?


  • Customer preference tool
  • Availability of license within customer machine
  • Availability of test environment
  • Additional protocol support
  • License cost
  • Efficiency of tool
  • User options for testing
  • Vendor support

Q)  What is the difference between Performance Testing & Functional Testing?


Performance Testing Functional Testing
  • Performance testing is functional testing
  • If it is automated it will give better results
  • Customer, Tester, Developer, DBA, and N/W Management Team
  • Functional testing is performed to verify the accuracy of the software with specified inputs against the expected output.
  • A single user performs all operations
  • A production-scale test environment is not required, and H/W requirements are minimal
  • Performance testing is done to check the behavior of the system under various load conditions.
  • Many users perform desired functions
  • A production test environment requires close and multiple H/W facilities
  • This test can be done manually or automatically
  • Requires customer, tester and development involvement

Q) What is performance in performance testing?

ANSWER:  Throughput refers to the amount of data sent to the server in response to a client request over a specified period of time. It is calculated in terms of requests per second, calls per day, reports per year, hits per second, etc. The performance of the application depends on the performance value, the higher the performance value – the higher the performance of the application.

Q) What are the common mistakes that are done during performance testing? 


  • Confusion on the definite of Concurrent users
  • A significant difference between the test and production environment
  • Network bandwidth not stimulated
  • Underestimating performance testing schedules
  • Incorrect extrapolation of pilots
  • Inappropriate base-lining of configurations.
  • Direct jump to multi-user tests
  • Test results not validated
  • unknown workload details
  • Too small run duration
  • Lacking long-duration sustainability test

Q) What is Neo load?

ANSWER:  Neo Load is a tool that measures the performance of a web or mobile application. It is a stress and load-testing tool. It provides programmatic solutions to developers to improve performance before the application goes into production. It is available in French and English. It is a type of load-testing equipment

Q) What are the Correlate graph and overlay graph?


  • Correlate Graph: Y-axis where both graphs are plotted against each herb. After this, the Y-axis of the active graph is treated as the X-axis of the linked graph. Henceforth, the graph connected to the Y-axis of that graph becomes the Y-axis.
  • Overlay Graph: Draw two graphs with the same x-axis. The left Y-axis in the attached graph shows the current value of the graph. The right Y-axis shows the Y-axis value of the linked graph.

Q) What are spike testing and soak testing?


  • Spike testing: A spike test is a change in usage when there is a sudden increase or decrease in the number of users.
  • Soak testing: Shock testing is used to find out the behavior of the application when we use loads for a long time or for a long time. stability (character of the application) and response time of the application is determined by the process.

Q) What do you know about distributed testing? 

ANSWER: Distributed testing is defined as a process that enables application testing to be performed across a number of users who have simultaneous access to the application.

Performance Testing Interview Questions for Freshers

Q) Mention the phases of the life cycle of testing?


  • Planning of tests
  • Development of tests
  • Execution of tests
  • Analysis of results
  • Tracking defection and
  • Reporting

Q) What are the main advantages of testing that are Windows-based?


  • Functionality
  • Integration

Q)  What are the points that testing of web-based is concerned with?  


  • Page text
  • A user interface that is graphical
  • Response time
  • Links that are broken in pages of the web

Q) What is desktop testing? 

ANSWER: It is a complete test form because it does not depend on the applications running on some other computer.

Q) Mention four bugs of Web testing? 


  • Issues that are related to application navigation
  • Issues related to functionality
  • Usability
  • Issues related to GUI and Cosmetic

Q) What do you mean by profiling in the case of performance testing? 

ANSWER: The process of identifying miniature-level performance bottlenecks is called profiling.

Q) What are the performance test activities to be done?


  • Performance test modeling
  • Test Execution
  • Analysis
  • Report
  • Requirement gathering
  • Tool selection
  • Performance test plan
  • Performance test development

Q) What are the types of techniques available to test performance?

ANSWER: It is possible to measure the performance of systems by considering load, stress, soak and spike tests.

Q) List the need for opting for Performance Testing


  • Application response time for the intended number of users-
  • Maximum load resistance capacity of the application.
  • The ability of the application under test to handle a specified number of transactions.
  • Stability of an application under regular and unexpected user load.
  • Ensuring proper response time to users in production.

Q) How to perform Spike Testing in JMeter?

ANSWER: In JMeter, spike testing can be achieved using the Synchronizing Timer. Threads are jammed by synchronizing a timer until a certain number of threads are successfully blocked, then releasing them simultaneously causes a large instantaneous load.

Q) What is the difference between JMeter and SOAPUI?


 JMeter                                  SoapUI
  • It is used for load and performance testing HTTP, JDBC, JMS, Web Service(SOAP), etc.
  • It supports distributed load testing
  • It is specific for web services and has a more user-friendly IDE
  • It does not support distributed load testing
  • For most IDE, it has plugin support

Q) What are the benefits of LoadRunner on testing tools?


  • Versatility
  • Test Cases Results
  • Easy Integrations
  • Robust reports
  • Enterprise Package

Q) What do you understand by distributed testing?

ANSWER: Distributed testing is the process of testing applications when multiple users access the application simultaneously from different devices. It helps in stress testing.

Q) What is Volume Testing?

ANSWER: Volume testing is to check if a system/app can handle a large amount of data. This test focuses on the database. A performance tester who performs block testing must fill a large amount of data into a database and monitor the behavior of a computer.


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