plaeh / adb_trace

Android Debug Bridge + Chrome Tracing

adb_trace

Android Debug Bridge + Chrome Tracing

Requires Android Chrome version 25+

Prerequisites

1. Ensure that the Android SDK is installed and that adb is in your path
   • http://developer.android.com/sdk/index.html
2. Ensure that your Android device is connected and USB debugging is enabled
   • http://developer.android.com/tools/device.html
3. Ensure that USB debugging is enabled in Chrome
   • https://developers.google.com/chrome-developer-tools/docs/remote-debugging

Grabbing a capture from a stable Chrome build

$ python ./adb_trace.py
['SurfaceView', '16954612']
Refresh rate auto-guessed to be 58.981002.
Press enter to stop profiling.

Pulling chrome-profile-results-2013-03-19-014011 to ./chrome.json

Using beta?

$ python ./adb_trace.py --browser beta

Using dev channel or developer build? (Sorry, internal only right now) --browser dev and --browser build

Viewing a capture

On the computer your Android is connected to:

1. Navigate to about:tracing
2. Click the Load button
3. Select chrome.json that was copied to your PC.

Command Line Options

• --refresh-rate: The display refresh rate in Hz.
• --url: The url to navigate to before capturing the trace.
• --browser: The browser channel: stable, beta, dev, or build.
  • stable: The official build of Chrome
  • beta: The beta build of Chrome
  • dev: The development/canary build of Chrome
  • build: Compiled Chrome yourself? This one is for you.
• --view: Runs the trace-event-viewer command upon completion.

trace-event-viewer

trace-event-viewer is a standalone version of Chrome's about:tracing UI for viewing multithreaded performance traces. Works on OSX and Linux and even Windows using Chrome Apps v2 to make it look like a regular app.

You can grab it from here: https://github.com/natduca/trace_event_viewer