Intel® VTune™ Profiler User Guide

User Guide

Contents

Android* Targets

Use the
Intel® VTune™
Profiler
 installed on the Windows*, Linux,* or macOS* host to analyze code performance on a remote Android* system.
For successful product operation, the target Android system should have ~25 MB disk space.
VTune
Profiler
 supports the following usage mode with
VTune
Profiler
 remote collector and ADB communication:

1. Install
VTune
Profiler

Install the full-scale
VTune
Profiler
 product on the host system. By default, the
VTune
Profiler
 also installs the remote collector on the target Android system as soon as you run the first remote collection.
If the remote
VTune
Profiler
 collector is installed on a non-rooted device, during installation you may get an error message on missing/incorrect drivers. You can dismiss this message if you plan to run the user-mode sampling and tracing collection (Hotspots) only.

2. Prepare your target system for analysis

  • Configure your Android device for analysis.
  • Gain adb access through TCP/IP to an Android device.
  • To enable hardware-event-based sampling analysis or Java* analysis, gain root mode adb access to the Android device.
    Depending on your system configuration, you may not need to gain a root mode access for Hotspots (
    hardware event-based sampling
     mode), Microarchitecture Exploration and Custom EBS analysis types.
  • To enable hardware-event-based sampling analysis, verify that version compatible pre-installed signed drivers are on the target Android system.

3. Configure and run remote analysis

  1. Use ITT APIs to control performance data collection by adding basic instrumentation to your application.
  2. Specify your analysis target and remote system.
    You may use the
    Analyze unplugged device
     option to exclude the ADB connection and power supply impact on the performance results. In this case, the collection starts as soon as you disconnect the device from the USB cable or a network. The analysis results are transferred to the host when you plug in the device back.
  4. Choose an analysis type.
    On Android platforms, the
    VTune
    Profiler
     supports hardware event-based sampling analysis types and Hotspots analysis in the
    user-mode sampling
     mode. Other algorithmic analysis types are not supported.
  5. Configure the analysis type.
  6. Run the analysis from the host.

4. View collected data

View the collected data on the host.
To run Energy analysis on an Android system, use the Intel® SoC Watch tool.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.