Explore performance diagnostics for Elasticsearch in this Devoxx conference talk. Dive into the Performance Analyzer feature of Open Distro for Elasticsearch, designed to instrument and expose metrics with diagnostic capabilities. Learn about the system's design and implementation, and watch a demonstration of how to use it with the Open Distro PerfTop client to troubleshoot cluster issues. Discover how to get involved and contribute to this open source project. Gain insights into Elasticsearch provisioning challenges and performance troubleshooting techniques. Examine key components, data flow, metrics, and innovations of the Performance Analyzer. Understand use cases, CPU utilization, query results and operations, database creation, matrix processing, web services, and disk utilization. Explore root cause analysis methods for typical issues using Perftop, and learn about network and memory considerations in Elasticsearch performance diagnostics.