The tenth article in the Perfetto series focuses on Binder, the core Inter-Process Communication (IPC) mechanism of Android. Binder carries almost all interactions between system services and applications and is a frequent source of performance bottlenecks. This article, written from a system development and performance tuning perspective, combines data sources like android.binder, sched, thread_state, and android.java_hprof to provide a practical diagnostic workflow that helps both beginners and advanced developers identify issues related to latency, thread pool pressure, and lock contention.