Any software before being launched needs to be tested so that it performs fast and without any faults. A performance testing checks the actual software with specifications mentioned before it is being built. Its most basic function is to work as a diagnostic aid to locate problems in communication. Scott Barber, a famous testing expert, said that it is difficult to pinpoint an exact definition for performance testing because it works differently in different situations and other various companies.
However, every company uses different types of performance tests depending upon the testing environment. Here’s a look at some of the popular performance testing:
1. Load Testing
One of the most basic types of performance testing, load testing method checks increasing load of the software until the threshold is reached. Increasing load means increasing number of simultaneous users, transaction, and behavior of software under test situation. The testing’s primary purpose is to observe the response time to ensure that the software can withstand a certain amount of load at any given time, which is why it is also called Volume Testing.
2. Stress Testing
Stress testing is another common performance testing method which checks stability of the software when hardware including CPU, disk space, and memory isn’t stable. It is negative testing in which software is loaded with a large number of concurrent users that can’t be handled by the software. It is a type of non-functional testing because it tests the non-functional aspects of a website or application, which is carried under a controlled situation so that it can capture uncertain scenarios and rectify them.
3. Throttle Testing
Throttle testing is a limited testing situation in which a load is tested at a limited speed to check the speed at which a website will load for users who have low network connectivity including those living in distant areas, 3G and 2G data, and using mobile internet. This testing makes use of certain tools like traffic shapers and speed stimulators.
4. Endurance Testing
In endurance testing, the software is tested with a fixed amount of load for a long period of time to observe the system’s behavior. For instance, if software is designed to work for properly for four hours, its endurance is to be tested for double the time, which is eight hours. This type of performance testing is used to check if there are any system fails or memory leaks. Endurance testing is often referred to as soak testing.
5. Spike Testing
Spike testing is similar to stress testing but the software is tested against load volumes and workload models for a longer time with simultaneous increase in concurrent load. The test is conducted for a time longer than its anticipated functioning time. Any unknown behavior is tapped and corrected at the very moment.
6. Smoke Testing
In smoke testing, the software is run on a very small load, which is much less than it can usually handle. If the test generates smoke, then the software has an error in its script. It is one of the simplest tests used and usually the verification test that is run before the software is launched or larger tests are run.
7. Capacity Testing
As simple as it sounds, a capacity test is one in which the software is tested for the load it take handle at any given time. When you know how many users your software can handle, you have a better visibility of future events that might limit your application or website. It is a confirmatory test to avoid any future problems especially when you want to increase volume of data.
8. Component Testing
Component testing checks functionality of a particular part of your application or website. It tests simple but important aspects including file upload, shopping cart, email function, chart feature, or search function.
9. Peak Testing
In peak testing, you expose the software with increased load for a small time and regular peak in concurrent users to analyse how the website or application will behave in real life situation.
10. Scalability Testing
This kind of performance testing is usually carried out during development of the software and just before launch. In scalability testing, you check how the website or application will program is another software is added to the server or find ways to improve loading time. The test’s primary aim is to find out at what peak the software will prevent more scaling.
Common Issues Observed during Performance Testing:
Performance tests are conducted to make sure the system is free of fault so that it is ready to be launched in the market. Let’s take a look at some of the common issues that you might encounter during performance testing.
1. Poor Scalability
The system isn’t able to handle the desired number of load that delays loading time leading to unexpected benefits that can affect memory, CPU usage, disk usage, network configuration, and operating system.
This issue occurs when data flow is halted or interrupted because the website or application isn’t capable enough to handle the load.
3. Insufficient Hardware Resource
This means that there is a lack of hardware that results in memory shortage and CPUs don’t perform well.
4. Software Configuration Problem
It is a minor issue which occurs when configuration settings are set lower than the system can handle. All you have to do is adjust software configuration settings, and it’ll work perfectly fine.
Here are Some of the Best Performance Testing Practices: