Discard event when subbuffers are full (default)
.TP
.BR "\-\-overwrite"
-Flight recorder mode : overwrites events when subbuffers are full
+Flight recorder mode: overwrites events when subbuffers are full. The
+number of subbuffer must be 2 or more.
.TP
.BR "\-\-subbuf-size SIZE"
Subbuffer size in bytes {+k,+M,+G}.
.BR "\-C, \-\-tracefile-size SIZE"
Maximum size of each tracefile within a stream (in bytes).
0 means unlimited. (default: 0)
+Note: traces generated with this option may inaccurately report
+discarded events as of CTF 1.8.
.TP
.BR "\-W, \-\-tracefile-count COUNT"
Used in conjunction with \-C option, this will limit the number of files
'$ctx.vtid == 1234'
.fi
+Context information is available to all filters whether or not the add-context
+command has been used to add it to the event's channel, as long as the context
+field exists for that domain. For example, the filter examples given above will
+never fail to link: no add-context is required for the event's channel.
+
.TP
.BR "\-x, \-\-exclude LIST"
Add exclusions to UST tracepoints:
Save tracing session configuration
If SESSION is omitted, all session configurations will be saved to individual
-\fB.lttng\fP files under the user's session configuration directory. The
-default session configuration file naming scheme is \fBSESSION.lttng\fP.
+\fB.lttng\fP files under the user's session configuration directory (default:
+~/.lttng/sessions/ or /var/run/lttng/sessions/ for root user). The default
+session configuration file naming scheme is \fBSESSION.lttng\fP.
.B OPTIONS:
Save all session configurations (default).
.TP
.BR "\-o, \-\-output-path PATH"
-Specify the output path for saved sessions (default: ~/.lttng/sessions/).
+Specify the output path for saved sessions. This overrides the default session
+configuration directory.
.TP
.BR "\-f, -\-force"
Overwrite session configuration file if session name clashes.
Maximum size in bytes of the snapshot. The maxium size does not include the
metadata file. Human readable format is accepted: {+k,+M,+G}. For instance,
\-\-max-size 5M
+
+The minimum size of a snapshot is computed by multiplying the total amount of
+streams in the session by the largest subbuffer size. This is to ensure
+fairness between channels when extracting data.
.TP
.BR "\-C, \-\-ctrl-url URL"
Set control path URL. (Must use -D also)