projects / lttng-docs.git / blame
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| 2 | id: installing-lttng | |
| 3 | --- | |
| 4 | ||
| 5 | **LTTng** is a set of software components which interact to allow | |
| 6 | instrumenting the Linux kernel and user applications and controlling | |
| 7 | tracing sessions (starting/stopping tracing, enabling/disabling events, | |
| 8 | etc.). Those components are bundled into the following packages: | |
| 9 | ||
| 10 | * **LTTng-tools**: Libraries and command line interface to control | |
| 11 | tracing sessions | |
| 12 | * **LTTng-modules**: Linux kernel modules allowing Linux to be | |
| 13 | traced using LTTng | |
| 14 | * **LTTng-UST**: User space tracing library | |
| 15 | ||
| 16 | Most distributions mark the LTTng-modules and LTTng-UST packages as | |
| 17 | optional. In the following sections, we always provide the steps to | |
| 18 | install all three, but be aware that LTTng-modules is only required if | |
| 19 | you intend to trace the Linux kernel and LTTng-UST is only required if | |
| 20 | you intend to trace user space applications. | |
| 21 | ||
| 22 | This chapter shows how to install the above packages on a Linux | |
| 23 | system. The easiest way is to use the package manager of the system's | |
| 24 | distribution ([desktop](#doc-desktop-distributions) or | |
| 25 | [embedded](#doc-embedded-distributions)). Otherwise, you can | |
| 26 | [build the LTTng packages from source](#doc-building-from-source). |