Performance testing
How to size your projects for Red Hat's single sign-on technology
Red Hat’s single sign-on (SSO) technology is an identity and access management tool included in the Red Hat Middleware Core Services Collection that’s based on the well-known Keycloak open source project. As with other Red Hat products, users have to acquire subscriptions, which are priced according to the number of cores or vCPU used to deploy the product. This presents an interesting problem for pre-sales engineers like me. To help my customers acquire the correct number of subscriptions, I need to sketch the target architecture and count how many cores they need. Continue reading
How to run performance tests with K6, Prometheus and Grafana
K6 is a novel performance testing tool written in Go, using plain Javascript for the test definition and presenting the test results through Grafana. An existing article written in 2018 explains how to setup K6 with InfluxDB and Grafana, however Prometheus gained popularity over InfluxDB since then. Proper integration of K6 with Prometheus is a clear lack identified by the community. Here I explain how to integrate K6 with Prometheus using the existing StatsD support in K6, present the Grafana dashboard I built, and show how to use it. This integration fills a gap and provides a quick win for companies already using Prometheus. Continue reading
Use JMeter to assess software performances
One of my side projects (the Telegram Photo Bot), have some performance issues that I will have to tackle. I could have jumped into the code and changed something, hoping it will improve performances. But that would be ineffective and unprofessional. So, I decided to have an honest measure of the current performances as well as a reproducible setup to have consistent measures over time. Continue reading