Snap for 7360053 from 6d2c711220d72620090941cf14ac33037d402523 to sc-release

Change-Id: I4c12d450d2a3953e29388462d08cdbbe16f0ddd6
tree: c46c4554991f543a715def82541c27f3db50e393
  1. core/
  2. gradle/
  3. scripts/
  4. trebuchet/
  5. .gitignore
  6. Android.bp
  7. build.gradle
  8. CONTRIBUTING.md
  9. gradle.properties
  10. gradlew
  11. gradlew.bat
  12. LICENSE
  13. OWNERS
  14. README.md
  15. settings.gradle
README.md

Trebuchet

Trebuchet is a Kotlin library for parsing and analyzing Android trace files generated by the atrace or systrace commands. This is not an officially supported Google product.

Library

The code for the Trebuchet library can be found in the core/ directory.

Bundled Programs

Trebuchet comes bundled with several programs for analyzing one or more trace files.

Startup Analyzer

The Startup Analyzer program takes a trace file, detects any startup events that occurred during the traced time period, and prints information about the events. If Trebuchet is built using the Android build system, there will be a StartupAnalyzerKt program placed into a directory that is a member of the PATH system variable. If you wish to use Gradle, you can use the startup-analyzer.sh script located in the scripts/ directory.

Startup Summarizer

The Startup Summarizer program takes a set of trace files, detects startup events in each file, and computes average and standard deviation for startup stats, broken down by program name, compiler filter, and cache status. If Trebuchet is built using the Android build system, there will be a StartupSummarizerKt program placed into a directory that is a member of the PATH system variable. If you wish to use Gradle, you can use the startup-summarizer.sh script located in the scripts/ directory.

Helper Scripts

The scripts/ directory contains a shell script called run-startup.sh, which will start a trace, launch an activity given a package name and an activity name, transfer the trace file to the host machine, and run the StartupAnalyzer.