How often do you stress test the systems your developers depend on? You'd better do that before hitting the limit and breaking developers' workflows! In this talk Paweł will present how Collabora tracks performance of its LAVA instances. He will show how the bottlenecks are located and how to push LAVA to manage even higher workloads. Detailed lessons learned will be shared to encourage discussion on this topic or inspire attendees to share their experience in testing systems performance optimization area.