User Guide

  • 2020.4
  • 12/10/2020
  • Public Content

About Instrumentation and Tracing Technology (ITT) API

The instrumentation and tracing technology (ITT) API provided by Intel® GPA enables your application to generate and control the collection of trace data during its execution. ITT API has the following features:
  • Application performance overhead can be controlled based on the amount of traces that you collect.
  • Enables trace collection without recompiling your application.
  • Supports applications in C/C++ environments.
  • Automatically traces data from Microsoft DirectX* applications.
  • Automatically traces data from OpenGL* ES v1, v2, and v3 APIs on Android* applications.
  • Supports instrumentation for tracing application code.
This document describes how to add basic instrumentation to your application, and also includes examples of several advanced instrumentation topics.
User applications/modules linked to the static ITT API library do not have a runtime dependency on a dynamic library. Therefore, they can be executed without Intel® GPA or other Intel® Parallel Studio XE tools.
ITT API enables you to manually instrument your application for further application performance analysis.
ITT API is a set of pure C functions. There are no Java or .NET APIs. If you need runtime environment support, you can use a JNI, or C/C++ function call from the managed code. If the collector causes significant overhead or data storage, you can pause the analysis to reduce the overhead.
See Also

Product and Performance Information


Performance varies by use, configuration and other factors. Learn more at