Performance Testing Introduction

What is Performance Testing?

Performance Testing is defined as the testing of software to determine how it performs in relation to speed, scalability, and stability; it is a technique of quality assurance.

The testing will determine if the software will be able to perform under its expected conditions. This is important because it will also determine if the user of the software will be satisfied with its performance.

Sometimes quality expectations do not meet the reality of how the software really operates; Performance Testing isolates which aspect does not meet the expectations and how it can be optimized.

While usually one program is assessed at a time, two or more can be compared for maximum optimization. The implementation of this technique is crucial during software development as proper performance testing can quickly identify problems and improve the quality and performance of software.

One common problem that performance testing battles is bottlenecks– finding and eliminating them. Bottlenecks slow down data flow and can sometimes stop the data flow completely. If performance testing was not executed, it is possible that the program would not work at all.

The Method for using performance testing process:

The performance testing process is complex and can easily be messed up. The testing methods for using this process can vary widely depending on the testing environment, but the objective for completion is generally the same.

  • The first step is to identify the testing environment and the performance criteria. This step is important because it allow the testers to create efficient tests, identify any challenges they may encounter while testing, and know what goals should be reached as far as performance benchmarks.
  • Next comes the planning and designing of the tests and the environmental configuration. Before designing a test, it is necessary to determine how users are expected to interact with the product and to plan a test that covers all possible uses– outline what measurements will be conducted / gathered.

Configure the testing environment by arranging all tools and resources, and (once properly prepared) begin creating the performance tests and executing them.

Once the initial tests are complete and the data has been analyzed, improve the tests and retest to determine if improvements can be made or if there is a decrease in performance.

Some of the most common processes that are watched carefully during performance testing include:

  • processor usage
  • Memory use
  • Disk time
  • Bandwidth
  • Response time
  • Throughput
  • Garbage collection
  • Maximum active sessions
  • Hit ratios
  • Thread counts
  • Database locks


Performance testing is broad, complex, and takes on numerous forms; these include: load testing, stress testing, endurance, spike, volume, and scalability testing. Each one of these is crucial to the program’s performance.

performance testing

 Applications and software that are released to the public and fall short in one of the categories mentioned above are likely to cost the company money and earn the application/company a bad reputation.

Therefore, properly executing performance testing is necessary when marketing a software product. It ensures the customer is satisfied, and (when the product gains positive attention) gives an incentive to investors to continue investing in the company.

 Performance testing can be expensive and time consuming, but the customer/investor satisfaction and retention make up for the monetary cost.

Read more about Automation Testing and Manual Testing.


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