<?xml version="1.0" encoding="latin1" ?> <!DOCTYPE chapter SYSTEM "chapter.dtd"> <chapter> <header> <copyright> <year>2002</year><year>2012</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> 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. </legalnotice> <title>Introduction</title> <prepared>Håkan Mattsson</prepared> <responsible>Håkan Mattsson</responsible> <docno></docno> <approved>Håkan Mattsson</approved> <checked></checked> <date></date> <rev>%VSN%</rev> <file>et_intro.xml</file> </header> <p>The <c>Event Tracer (ET)</c> uses the built-in trace mechanism in Erlang and provides tools for collection and graphical viewing of trace data.</p> <p>The viewed trace data is normally collected from Erlang trace ports or files.</p> <section> <title>Scope and Purpose</title> <p>This manual describes the <c>Event Tracer (ET)</c> 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.</p> </section> <section> <title>Prerequisites</title> <p>The following prerequisites is required for understanding the material in the <c>Event Tracer (ET)</c> User's Guide:</p> <list type="bulleted"> <item> <p>familiarity with the Erlang system and Erlang programming in general and the especially the art of Erlang tracing.</p> </item> </list> <p>The application requires Erlang/OTP release R13BB or later. If you use the old <c>GS</c> based GUI it does suffice with R7B.</p> </section> <section> <title>About This Manual</title> <p>In addition to this introductory chapter, the <c>Event Tracers</c> User's Guide contains the following chapters:</p> <list type="bulleted"> <item> <p>Chapter 2: "Tutorial" provides a walk-through of the various parts of the application. The tutorial is based on <c>Jayson Vantuyl's</c> article <c>http://souja.net/2009/04/making-sense-of-erlangs-event-tracer.html</c>.</p> </item> <item> <p>Chapter 3: "Description" describes the architecture and typical usage of the application.</p> </item> <item> <p>Chapter 4: "Advanced examples" gives some usage examples</p> </item> </list> </section> <section> <title>Where to Find More Information</title> <p>Refer to the following documentation for more information about <c>Event Tracer (ET)</c> and about the Erlang/OTP development system:</p> <list type="bulleted"> <item> <p>the Reference Manual of the <c>Event Tracer (ET)</c>.</p> </item> <item> <p>documentation of basic tracing in <c>erlang:trace/4</c> and <c>erlang:trace_pattern/3</c> and then the utilities derived from these: <c>dbg</c>, <c>observer</c>, <c>invisio</c> and <c>et</c>.</p> </item> <item> <p>Programming Erlang: Software for a Concurrent World by Joe Armstrong; ISBN: 978-1-93435-600-5</p> </item> </list> </section> </chapter>