Functional Testing vs Performance Testing

Within the paradigm of application testing, there are two broad categories of tests which are often used to complement each other. While there are dedicated tools for each, there is considerable overlap and many of these tools can be used for either purpose. In particular, tools such as JMeter, while traditionally being more associated with performance tests, can be proposed to execute functional tests. In this article, we will describe what each test seeks to proveRead More →

A Gentle Introduction to Load Testing

Suppose you are suddenly tasked with the responsibility to prove application performance through load testing. You have never done this before. Where would you begin? In this article, we will discuss how to approach the planning, selection of tools, and architecture through the typical phases of load testing. Defining Capacity Metrics First, you would have some homework to do. Based on testing goals, there are a number of key performance metrics that should be defined. ItRead More →

QualiTlabs Case Study: Cost-Effective Performance Testing for a Healthcare Mobile App

QualiTlabs is an independent software testing services company who conducted a case study using RedLine13 and JMeter to carry out large-scale performance testing. RedLine13 integrates seamlessly with AWS, which allowed QualiTlabs to scale the tests in the cloud while ensuring cost-efficiency. This facilitated simulation of thousands of concurrent users in a flexible, secure, and scalable environment, minimizing the need for additional infrastructure. Through integration of RedLine13 with AWS and the use of JMeter, QualiTlabs was ableRead More →

k6 vs JMeter

When it comes to load testing, there are two platforms which must be mentioned.  k6 and JMeter have established themselves as the de facto standards in the performance testing space. In this article, we will compare and contrast the features of each, to help you better decide which technology is right for you. A Brief History JMeter was introduced more than 20 years ago, and in that time has become one of the most utilized performanceRead More →

TCP/IP Testing using the JMeter TCP Sampler

While the primary focus of JMeter is on application-level HTTP-based testing, it also supports protocol-level TCP/IP testing using the TCP sampler.  In this post, we will review the basic setup of the TCP Sampler, and how to use it in your JMeter tests. This component allows JMeter testers to simulate network-level protocols and evaluate the performance of systems that rely on TCP/IP messaging, but not necessarily HTTP calls. Examples of these include internet of things (IoT)Read More →

Speak the Lingo using Load Testing Terms

Load testing is a niche skill within the large trade of quality assurance. With any trade, being able to communicate effectively the nuances and concepts used is essential. In this brief post, we will go over several definitions that will allow you to speak the lingo using load testing terms. Below we have divided these into categories for better organization: General load testing terms Load generator server – Each load test is run on one orRead More →

Performance Test Smells

Eldad Uzman, Automation Engineer at Merck and author on Medium, spoke again at LoadTestWorld 2022 February, this time on Performance Test Smells. You can click on the image below and watch Eldad’s talk on Performance Test Smells. Eldad shares the quote below and builds from there: A code smell is a surface indication that usually corresponds to a deeper problem in the system. Martin Fowler In addition, the video captured several questions from the audience asRead More →

yCrash Answers Performance Testing Questions - A Complement to RedLine13

Performance engineers know how to run the load testing which is used to determine when a system is ready for production.  When the system doesn’t handle the load, someone needs to determine why.   yCrash answers performance testing questions: Why did the CPU spike up?  Why is memory degraded?  Why is response time increased? RedLine13 and yCrash partnered together as valuable tools that complement each other.  RedLine13 handles the generation of load data and collection of testRead More →

Partner in Performance Testing

Pragmatic Test Labs is a RedLine13 Partner that does performance testing for client projects with Apache JMeter and RedLine13. You can read more about Pragmatic Test Labs and their expertise in performance testing, their experience scaling tests with large numbers of concurrent users, simulating load agents from multiple geographical locations and more. With their experience in JMeter, they are a natural fit with RedLine13. Contact them to learn how they can help you.Read More →

decentralized model for performance testing

“Load Test as Internal* Service” was the topic of Eldad Uzman’s talk at LoadTestWorld 2021 which was about collaborative efforts in load testing and using a decentralized model for performance testing. The video is available on the LoadTestWorld YouTube channel. He contrasts the centralized model vs. the decentralized model. In the centralized model, the performance engineer executes the test, analyzes the test and reports on the results. Eldad recommends the decentralized model and explains the collaborationRead More →