Provided by: lttng-tools_2.13.9-1build1_amd64 bug

NAME

       lttng-list - List LTTng recording sessions and instrumentation points

SYNOPSIS

       List the recording sessions:

       lttng [GENERAL OPTIONS] list

       List the tracing domains of a recording session with at least one channel:

       lttng [GENERAL OPTIONS] list --domain SESSION

       List the channels and recording event rules of a recording session:

       lttng [GENERAL OPTIONS] list [--channel=CHANNEL] SESSION
             [--kernel] [--userspace] [--jul] [--log4j] [--python]

       List the available LTTng tracepoints, Linux system calls, and/or Java/Python loggers:

       lttng [GENERAL OPTIONS] list [--fields]
             [--kernel [--syscall]] [--userspace] [--jul] [--log4j] [--python]

DESCRIPTION

       The lttng list command lists:

       Without arguments
           The recording sessions of your Unix user, or of all users if your Unix user is root,
           within the connected session daemon.

           See the “Session daemon connection” section of lttng(1) to learn how a user
           application connects to a session daemon.

           The command shows recording session properties such as their output directories/URLs
           and whether or not they’re active.

       With the SESSION argument

           With the --domain option
               The tracing domains (with at least one channel) of the recording session named
               SESSION.

           Without the --domain option

               With the --channel=CHANNEL option
                   The recording event rules of the channel CHANNEL of the recording session
                   named SESSION.

               Without the --channel option
                   The channels of the recording session named SESSION and their recording event
                   rules.

                   Use the dedicated tracing domain options (--kernel, --userspace, --jul,
                   --log4j, and --python) to only show specific channels.

       Without the SESSION argument and with at least one dedicated tracing domain option

           With the --kernel option

               Without the --syscall option
                   The available LTTng kernel tracepoints.

               With the --syscall option
                   The available, instrumented Linux system calls.

           With the --userspace option
               The available LTTng user space tracepoints.

           With the --jul, --log4j, and/or --python options
               The available java.util.logging, Apache log4j, and/or Python logger names.

           Also list the available instrumentation point fields with the --fields option.

       See lttng-concept(7) to learn more about recording sessions, tracing domains, channels,
       recording event rules, and instrumentation points.

       See the “EXAMPLES” section below for usage examples.

       List the channels and recording event rules of the current recording session (see lttng-
       concept(7) to learn more) with the lttng-status(1) command.

OPTIONS

       See lttng(1) for GENERAL OPTIONS.

   Tracing domain
       -j, --jul

           Without the SESSION argument
               List the java.util.logging logger names.

           With the SESSION argument
               Only list the java.util.logging channels and their recording event rules.

       -k, --kernel

           Without the SESSION argument
               List the LTTng kernel instrumentation points.

           With the SESSION argument
               Only list the Linux kernel channels and their recording event rules.

       -l, --log4j

           Without the SESSION argument
               List the Apache log4j logger names.

           With the SESSION argument
               Only list the Apache log4j channels and their recording event rules.

       -p, --python

           Without the SESSION argument
               List the Python logger names.

           With the SESSION argument
               Only list the Python channels and their recording event rules.

       -u, --userspace

           Without the SESSION argument
               List the LTTng user space tracepoints.

           With the SESSION argument
               Only list the user space channels and their recording event rules.

   Filtering
       -c CHANNEL, --channel=CHANNEL
           Only list the properties and recording event rules of the channel named CHANNEL.

           Only available with the SESSION argument.

       -d, --domain
           Show the tracing domains with at least one channel of the recording session named
           SESSION.

       -f, --fields
           When listing instrumentation points, also show their fields if they’re available.

       --syscall
           When listing LTTng kernel instrumentation points, only list Linux system calls.

   Program information
       -h, --help
           Show help.

           This option attempts to launch /usr/bin/man to view this manual page. Override the
           manual pager path with the LTTNG_MAN_BIN_PATH environment variable.

       --list-options
           List available command options and quit.

EXIT STATUS

       0
           Success

       1
           Command error

       2
           Undefined command

       3
           Fatal error

       4
           Command warning (something went wrong during the command)

ENVIRONMENT

       LTTNG_ABORT_ON_ERROR
           Set to 1 to abort the process after the first error is encountered.

       LTTNG_HOME
           Path to the LTTng home directory.

           Defaults to $HOME.

           Useful when the Unix user running the commands has a non-writable home directory.

       LTTNG_MAN_BIN_PATH
           Absolute path to the manual pager to use to read the LTTng command-line help (with
           lttng-help(1) or with the --help option) instead of /usr/bin/man.

       LTTNG_SESSION_CONFIG_XSD_PATH
           Path to the directory containing the session.xsd recording session configuration XML
           schema.

       LTTNG_SESSIOND_PATH
           Absolute path to the LTTng session daemon binary (see lttng-sessiond(8)) to spawn from
           the lttng-create(1) command.

           The --sessiond-path general option overrides this environment variable.

FILES

       $LTTNG_HOME/.lttngrc
           Unix user’s LTTng runtime configuration.

           This is where LTTng stores the name of the Unix user’s current recording session
           between executions of lttng(1).  lttng-create(1) and lttng-set-session(1) set the
           current recording session.

       $LTTNG_HOME/lttng-traces
           Default output directory of LTTng traces in local and snapshot modes.

           Override this path with the --output option of the lttng-create(1) command.

       $LTTNG_HOME/.lttng
           Unix user’s LTTng runtime and configuration directory.

       $LTTNG_HOME/.lttng/sessions
           Default directory containing the Unix user’s saved recording session configurations
           (see lttng-save(1) and lttng-load(1)).

       /etc/lttng/sessions
           Directory containing the system-wide saved recording session configurations (see
           lttng-save(1) and lttng-load(1)).

       Note
           $LTTNG_HOME defaults to the value of the HOME environment variable.

EXAMPLES

       Example 1. List the recording sessions.

               $ lttng list

       Example 2. Show the details of a specific recording session.

               $ lttng list my-session

       Example 3. List the available Linux kernel system call instrumentation points.

               $ lttng list --kernel --syscall

       Example 4. List the available user space tracepoints with their fields.

           See the --fields option.

               $ lttng list --userspace --fields

       Example 5. List the tracing domains of a specific recording session having at least one
       channel.

           See the --domain option.

               $ lttng list --domain my-session

       Example 6. Show the details of a specific channel in a specific recording session.

           See the --channel option.

               $ lttng list my-session --channel=channel0

RESOURCES

       •   LTTng project website <https://lttng.org>

       •   LTTng documentation <https://lttng.org/docs>

       •   LTTng bug tracker <https://bugs.lttng.org>

       •   Git repositories <https://git.lttng.org>

       •   GitHub organization <https://github.com/lttng>

       •   Continuous integration <https://ci.lttng.org/>

       •   Mailing list <https://lists.lttng.org/> for support and development: lttng-
           dev@lists.lttng.org

       •   IRC channel <irc://irc.oftc.net/lttng>: #lttng on irc.oftc.net

COPYRIGHT

       This program is part of the LTTng-tools project.

       LTTng-tools is distributed under the GNU General Public License version 2
       <http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html>. See the LICENSE
       <https://github.com/lttng/lttng-tools/blob/master/LICENSE> file for details.

THANKS

       Special thanks to Michel Dagenais and the DORSAL laboratory
       <http://www.dorsal.polymtl.ca/> at École Polytechnique de Montréal for the LTTng journey.

       Also thanks to the Ericsson teams working on tracing which helped us greatly with detailed
       bug reports and unusual test cases.

SEE ALSO

       lttng(1), lttng-concepts(7)