Advanced Chrome on Android Diagnostics and Profiling
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This comprehensive guide details the advanced diagnostic and performance tools available for developers working on Chrome for Android. It categorizes tools based on the specific issue being analyzed, covering areas like performance profiling (using Perfetto, Systrace, and Simpleperf), jank and rendering analysis (with dumpsys gfxinfo and SurfaceFlinger), and memory investigation (using heap dumps and dumpsys meminfo). The text also explains how to use Chrome's built-in tracing (like chrome://tracing and TRACE_EVENT macros) to instrument code and discusses system-level debugging using dumpsys for system services, debuggerd for capturing native stack traces during hangs, and kernel tracing for low-level I/O and scheduling issues. Finally, it outlines the importance of the Telemetry benchmarking framework for reproducible performance testing and the necessity of mitigating thermal and CPU scaling effects during profiling.
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