lttng-snapshot(1)
=================
+:revdate: 9 November 2018
NAME
is sent to the registered snapshot outputs.
The tracing session should be created in _snapshot mode_ to make sure
-taking snapshots is allowed. This is done at tracing session creation
-time using the man:lttng-create(1) command.
+that taking snapshots is allowed. This is done at tracing session
+creation time using the man:lttng-create(1) command's
+nloption:--snapshot option.
Note that, when a snapshot is taken, the sub-buffers are not cleared.
This means that different recorded snapshots may contain the same
events.
+If you want, instead, to keep all the trace data, but divide it into
+archived chunks which are then free to process (just like snapshots),
+see the lttng-rotate(1) and lttng-enable-rotation(1) commands. Trace
+chunk archives do not overlap like snapshots can.
+
Snapshot outputs
~~~~~~~~~~~~~~~~
Taking a snapshot of the current tracing session is as easy as:
[role="term"]
----------------------
-lttng snapshot record
----------------------
+----
+$ lttng snapshot record
+----
This writes the snapshot files to the configured output. It is possible
to use a custom, unregistered output at record time using the same