contents/understanding-lttng/intro.md

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   2 id: understanding-lttng
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   5 If you're going to use LTTng in any serious way, it is fundamental that
   6 you become familiar with its core concepts. Technical terms like
   7 _tracing sessions_, _domains_, _channels_ and _events_ are used over
   8 and over in the [Using LTTng](#doc-using-lttng) chapter,
   9 and it is assumed that you understand what they mean when reading it.
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  11 LTTng, as you already know, is a _toolkit_. It would be wrong
  12 to call it a simple _tool_ since it is composed of multiple interacting
  13 components. This chapter also describes the latter, providing details
  14 about their respective roles and how they connect together to form
  15 the current LTTng ecosystem.