Explore the intricacies of application responsiveness and latency in this comprehensive conference talk from Philly ETE 2014. Delve into common pitfalls, false assumptions, and problematic measurement techniques that can lead to incorrect reporting results. Learn how to identify and work around the coordinated data omission problem, and discover recently open-sourced tools for improving latency measurement and reporting. Gain insights into human response time, load vs. response time relationships, and the concept of hiccups in system performance. Examine real-world examples, pass-fail tests, and sustainable throughput considerations. Investigate advanced topics such as HDR Histograms, linear histograms, and constant size data structures to enhance your understanding of latency analysis and optimization.