20022009 Ericsson AB. All Rights Reserved. The contents of this file are subject to the Erlang Public License, Version 1.1, (the "License"); you may not use this file except in compliance with the License. You should have received a copy of the Erlang Public License along with this software. If not, it can be retrieved online at http://www.erlang.org/. Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language governing rights and limitations under the License. Introduction Håkan Mattsson Håkan Mattsson Håkan Mattsson %VSN% et_intro.xml

The Event Tracer (ET) uses the built-in trace mechanism in Erlang and provides tools for collection and graphical viewing of trace data.

The viewed trace data is normally collected from Erlang trace ports or files.

Scope and Purpose

This manual describes the Event Tracer (ET) application, as a component of the Erlang/Open Telecom Platform development environment. It is assumed that the reader is familiar with the Erlang Development Environment, which is described in a separate User's Guide.

Prerequisites

The following prerequisites is required for understanding the material in the Event Tracer (ET) User's Guide:

familiarity with the Erlang system and Erlang programming in general and the especially the art of Erlang tracing.

The application requires Erlang/OTP release R7B or later.

About This Manual

In addition to this introductory chapter, the Megaco User's Guide contains the following chapters:

Chapter 2: "Usage" describes the architecture and typical usage of the application.

Chapter 3: "Examples" gives some usage examples
Where to Find More Information

Refer to the following documentation for more information about Event Tracer (ET) and about the Erlang/OTP development system:

the Reference Manual of the Event Tracer (ET).

documentation of basic tracing in erlang:trace/4 and erlang:trace_pattern/3 and then the utilities derived from these: dbg, observer and et.

Concurrent Programming in Erlang, 2nd Edition (1996), Prentice-Hall, ISBN 0-13-508301-X.