lttng-crash(1) (v2.7)


lttng-crash — LTTng Crash Trace Viewer


  lttng-crash    OPTIONS


The LTTng project aims at providing highly efficient tracing tools for Linux. Its tracers help track down performance issues and debug problems involving multiple concurrent processes and threads. Tracing across multiple systems is also possible.

The lttng-crash command line tool, part of the lttng-tools package, is used to view or recover trace buffers in the event of a crash.


This program follows the usual GNU command line syntax with long options starting with two dashes. Below is a summary of the available options.

-h, --help

Show summary of possible options and commands.

-V, --version

Show version.

-v, --verbose

Increase verbosity. Three levels of verbosity are available which are triggered by putting additional v to the option (-vv or -vvv)

-e, --viewer NAME

Specify viewer and/or options to use. This will completely override the default viewers therefore make sure to specify the full command. The trace directory paths are appended at the end to the arguments. (defaults: babeltrace)

-x, --extract PATH

Extract trace(s) to the specified path. Don't display the trace.



If you encounter any issues or usability problem, please report it on our mailing list <> to help improve this project or at which is a bug tracker.


lttng is distributed under the GNU General Public License version 2. See the file COPYING for details.

A Web site is available at for more information on the LTTng project.

You can also find our git tree at

Mailing lists for support and development: <>.

You can find us on IRC server (OFTC) in #lttng.


lttng-crash was originally written by Mathieu Desnoyers. It is currently maintained by Jérémie Galarneau <>.