If you ever asked yourself “What is the difference between Performance Testing and Load Testing”, below are listed some of the main characteristics of Performance Testing and Load Testing, and how are they different from one another.
What is Performance Testing?
Performance Testing represents the characteristics of a system, how fast is that system, in general it refers to the tests undertaken to determine how that system behaves and performs.
Prerequisites for Performance Testing
We need to have clearly defined goals before starting any performance tests. The goals defined will help us if after getting the performance tests results there is a need for system improvement.
Performance Testing Results
After running performance tests, you need to inspect the metrics like response and latency times, hits per second, throughput per second, errors (client side metrics) and CPU, Memory, I/O (server side metrics) for the system tested.
Performance Testing Goals
Set a base line for the system under test for future releases and potential improvement of the system. It helps to identify potential bottlenecks, that can be found at different levels: system level (client and server side), DB level, network level.
Most of the times, running performance tests can be a very time consuming and hard job. First you need to set a base line for your tests, then you need to tweak the tests (number of concurrent users, duration and ramp up period between concurrent users).
What is Load Testing?
Load Testing is understanding how the system behaves under high volume of transactions. Let’s say you send an email campaign to 10000 addresses and you want to understand how your system behaves when most of those 10000 potential users will access your applications.
Load Testing helps you simulate similar scenarios in an controlled environment, and the goal of load testing is to see whether the application can sustain the increased load on the server or will it crash the servers. Use LoadFocus to cloud load test your application.
Load Testing is usually started with a low number of concurrent clients (users) and gradually increased over a given period of time until it reaches the desired load on the system. During this period, client side and server side metrics need to be inspected.
We’ve only touched the surface in terms of potential issues, performance testing and load testing tools and techniques that deserve to be mentioned in the context of performance and load testing.
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