android-perfetto-capture

To capture a Perfetto trace for frame drops, run a one-shot host script that connects to your Android device and saves a .perfetto-trace file. This file records timing and threading data needed to diagnose jank and scroll performance issues.

Recording Android system traces for startup latency is best done using Perfetto capture strategies like one-shot host scripts or on-device long-running captures. These methods generate a self-contained .perfetto-trace file for downstream timing and threading analysis.

Yes, Perfetto supports on-device long-running capture for continuous Android profiling. This strategy allows you to record extended trace data directly on the device, outputting a .perfetto-trace file that can be analyzed later with trace_processor.

Perfetto trace capture works directly with trace_processor for main-thread scheduling validation. The capture process outputs a .perfetto-trace file that trace_processor reads to analyze timing, threading, and scheduling data from the Android device.

You need a Perfetto trace to diagnose scroll performance and animation jank when you require detailed timing and threading data from the Android system. The captured .perfetto-trace file enables end-to-end analysis of frame drops and main-thread scheduling issues.

A one-shot host script for Android Perfetto trace capture is limited to capturing traces during a specific recording window on a connected device. For continuous background profiling, you must use the on-device long-running or in-app start/stop capture strategies instead.