Explore the challenges of applying academic performance analysis techniques to real-world software in this DevConf.CZ 2024 conference talk. Delve into the journey of Perun, a performance management system and tool suite, as it transitions from analyzing smaller projects to tackling the Linux kernel. Gain insights into the complexities of bridging the gap between theoretical research and practical implementation in software performance analysis. Learn about the obstacles encountered when moving from academic studies to large-scale, real-world applications, and discover valuable lessons for developers and researchers interested in program performance optimization.