Top 10 Performance Testing Interview Questions & Ans for 2023

Performance Testing

Software performance testing aims to evaluate the efficiency with which a programme or system functions. The framework’s responsiveness, speed, scalability, and stability under different load conditions are some of the qualities used to assess, verify, or monitor. The ti is validated over a range of load conditions in the system.
People working in engineering and performance testing have a reputation for being among the happiest in the nation. The average pay for software testers ranges between $75,000 and $100,000 per year. This career path may provide you with the safety and security you need. Therefore, our experts have compiled a list of the most often-requested performance-testing interview questions to aid you in landing your dream job.

1. What Is Performance Testing?

Software performance is tested using performance testing to guarantee that the programme works as expected under stress. In contrast to traditional testing, performance testing seeks to identify and remove obstacles to optimal system operation. A metric evaluates the system’s quality. Performance Testing features such characteristics as:
· The quickness of response is a critical factor in evaluating an application.
· The capacity of a programme to manage a large number of concurrent users is measured by its scalability.
· Whether or whether the application remains stable when subjected to changing loads is evaluated here.

2. What Exactly Does The Process Of Performance Testing Entail?

The various stages of a performance testing lifecycle are as follows:
· Get the hardware, software, and network settings before performing performance testing.
· Determine the performance acceptability criteria, which include throughput, reaction time, and resource allocation limits and targets.
· Design and plan performance tests by identifying essential scenarios to test for all conceivable use cases and defining how to use what is expected to differ across end users.
· Before carrying out the test, one must configure the testing environment, which entails setting up the necessary hardware, software, data, and other resources in advance.
· Create a performance test that reflects your test concept and then run it.
· Start the tests and keep an eye on the results.
Examine, modify, and retest Review, compile and disseminate testing data. After that, make any necessary adjustments and re-evaluate the system’s performance to determine if it can be further improved. You should end the test if the CPU is holding up.

3. Which Is Better, Stress Testing Or Load Testing?

When a system is tested for its breaking point, it is subjected to stress testing, also known as negative testing. However, load testing, a subset of performance testing, is the simplest method since it just entails raising the testing load until the limit or the objective is reached.

4. In Performance Testing, What Does Throughput Mean?

In this context, “throughput” is the rate at which data is sent from the client to the server in response to a request from the client. Requests per second, calls per day, reports per year, hits per second, etc., are the units of measurement. Increases in throughput result in improved application performance.

5. What Is A Protocol?

An information protocol is a set of rules for exchanging data between two or more computer systems. HTTP/HTTPS, FTP, Web Services, Citrix, HTTP/HTTPS, and Web Services are just a few of the numerous protocols available.

6. What Are Endurance Testing And Spike Testing?

Using a process called “Benchmark Testing,” you may evaluate how well your system’s framework performs compared to a predefined industry standard established by another company. Contrast this with Baseline Testing, a specific testing method in which the tester conducts a battery of tests to collect data on the system’s performance. This information serves as a baseline for future adjustments to the specified app.

7. In Performance Testing, What Is The Throughput?

Throughput is the rate at which data is sent from the client to the server in response to a request from the client during a performance test. Requests per second, calls per day, reports per year, hits per second, etc., are the units of measurement. Increases in throughput result in improved application performance.

8. If You’re Talking About Performance Testing, Do You Want To Discuss The Entry And Exit Criteria?

The performance testing process begins in the design phase. Data is gathered and evaluated once testing is complete to make adjustments that enhance performance. Scalability and dependability under load, application release schedule, and tolerance requirements of performance and stress all play a role in performance tuning throughout the development life cycle.

9. Where can I get examples of performance testing use cases for almost any programme?

We conduct tests to evaluate the efficacy of every procedure. In addition, it is vital to keep track of these procedures, as they will be invaluable when attempting to engineer the performance. Many factors must be tracked when keeping an eye on these performance tests, including the number of concurrent users, the number of users working on the application’s core functionality, and the kind of database operations being attempted. Using these factors, you can even use manual test cases to assist in pinpointing the performance KPIs.

10. What Is The Modular Approach To Scripting?

Each action, such as logging in or out, saving, deleting, etc., is broken down into its function under the modular method. This method is more efficient and allows for repeated uses of the request. For this method, using a web custom request is suggested.


Hiring managers often use performance-based questions in interviews. Get ready for it, brush up on your abilities, consult experts, take an online course to establish a firm foundation, and dive in!

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