doc/man/lttng-start.1.txt

   1 lttng-start(1)
   2 ==============
   3
   4
   5 NAME
   6 ----
   7 lttng-start - Start LTTng tracers
   8
   9
  10 SYNOPSIS
  11 --------
  12 [verse]
  13 *lttng* ['linkgenoptions:(GENERAL OPTIONS)'] *start* ['SESSION']
  14
  15
  16 DESCRIPTION
  17 -----------
  18 The `lttng start` command starts the various LTTng tracers for a
  19 given inactive tracing session.
  20
  21 Starting the LTTng tracers has the effect that all enabled event rules
  22 within enabled channels can make their target event sources _emit_ trace
  23 events. Whether they are recorded to the local file system, sent over
  24 the network, or not recorded at all depends on the specific
  25 configuration of the tracing session in which tracing is started. See
  26 man:lttng-create(1) for different session modes.
  27
  28 A tracing session with running tracers is said to be _active_. Active
  29 tracing sessions can return to the inactive state using the
  30 man:lttng-stop(1) command.
  31
  32 If 'SESSION' is omitted, the LTTng tracers are started for the current
  33 tracing session (see man:lttng-create(1) for more information
  34 about the current tracing session). Otherwise, they are started for the
  35 existing tracing session named 'SESSION'. `lttng list`
  36 outputs all the existing tracing sessions (see man:lttng-list(1)).
  37
  38
  39 include::common-cmd-options-head.txt[]
  40
  41
  42 include::common-cmd-help-options.txt[]
  43
  44
  45 include::common-cmd-footer.txt[]
  46
  47
  48 SEE ALSO
  49 --------
  50 man:lttng-stop(1),
  51 man:lttng(1)