LTTng » LTTng-tools

Note how the enable-event command will create a channel named channel0 while the listing then shows a channel named lttng_jul_channel.

$ lttng create p1
Spawning a session daemon
Session p1 created.
Traces will be written in /home/jgalar/lttng-traces/p1-20140530-122643
$ lttng enable-event -j 'root.l'
JUL event root.l created in channel channel0
$ lttng list p1
Tracing session p1: [inactive]
    Trace path: /home/jgalar/lttng-traces/p1-20140530-122643
    Live timer interval (usec): 0

=== Domain: UST global ===

Buffer type: per UID

Channels:
-------------
- lttng_jul_channel: [enabled]

    Attributes:
      overwrite mode: 0
      subbufers size: 131072
      number of subbufers: 4
      switch timer interval: 0
      read timer interval: 0
      trace file count: 0
      trace file size (bytes): 0
      output: mmap()

    Events:
      lttng_jul:user* (type: tracepoint) [enabled] [with filter]

=== Domain: JUL (Java Util Logging) ===

Events (Logger name):
---------------------
    - root.l [enabled] (loglevel: JUL_ALL)