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   lttng-disable-event    ( 1 )

отключить правила событий LTTng (Disable LTTng event rules)

Имя (Name)

lttng-disable-event - Disable LTTng event rules

Синопсис (Synopsis)

lttng [GENERAL OPTIONS] disable-event (--kernel [--probe | --function | --syscall] | --userspace | --jul | --log4j | --python) [--session=SESSION] [--channel=CHANNEL] (--all-events | EVENT[,EVENT]...)

Описание (Description)

The lttng disable-event command disables one or more event rules previously enabled by the lttng-enable-event(1) command.

Event rules are always assigned to a channel when they are created. If the --channel option is omitted, the default channel named channel0 is used.

If the --session option is omitted, the chosen channel is picked from the current tracing session.

If the --all-events option is used, all the existing event rules of the chosen domain are disabled. Otherwise, at least one event rule to disable named EVENT must be specified.

With the --kernel option, the event source type can be specified using one of the --tracepoint, --probe, --function, or --syscall options. See lttng-enable-event(1) for more details about event source types.

Events can be disabled while tracing is active (use lttng-start(1) to make a tracing session active).

Параметры (Options)

General options are described in lttng(1).


   Domain
       One of:


       -j, --jul
           Disable event rules in the java.util.logging (JUL) domain.


       -k, --kernel
           Disable event rules in the Linux kernel domain.


       -l, --log4j
           Disable event rules in the Apache log4j domain.


       -p, --python
           Disable event rules in the Python domain.


       -u, --userspace
           Disable event rules in the user space domain.


   Target
       -c CHANNEL, --channel=CHANNEL
           Disable event rules in the channel named CHANNEL instead of
           the default channel name channel0.


       -s SESSION, --session=SESSION
           Disable event rules in the tracing session named SESSION
           instead of the current tracing session.


   Event source type
       One of:


       --function
           Linux kernel kretprobe. Only available with the --kernel
           domain option.


       --probe
           Linux kernel kprobe. Only available with the --kernel domain
           option.


       --syscall
           Linux kernel system call. Only available with the --kernel
           domain option.


       --tracepoint
           Linux kernel or application tracepoint. Only available with
           the --kernel domain option (default Linux kernel domain event
           source type).


   Disabling
       -a, --all-events
           Disable all enabled event rules in the chosen tracing
           session, tracing domain, and channel.


   Program information
       -h, --help
           Show command help.


           This option, like lttng-help(1), attempts to launch
           /usr/bin/man to view the command's man page. The path to the
           man pager can be overridden by the LTTNG_MAN_BIN_PATH
           environment variable.


       --list-options
           List available command options.

Переменные окружения (Environment variables)

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

LTTNG_HOME Overrides the $HOME environment variable. Useful when the user running the commands has a non-writable home directory.

LTTNG_MAN_BIN_PATH Absolute path to the man pager to use for viewing help information about LTTng commands (using lttng-help(1) or lttng COMMAND --help).

LTTNG_SESSION_CONFIG_XSD_PATH Path in which the session.xsd session configuration XML schema may be found.

LTTNG_SESSIOND_PATH Full session daemon binary path.

The --sessiond-path option has precedence over this environment variable.

Note that the lttng-create(1) command can spawn an LTTng session daemon automatically if none is running. See lttng-sessiond(8) for the environment variables influencing the execution of the session daemon.

Файлы (Files)

$LTTNG_HOME/.lttngrc User LTTng runtime configuration.

This is where the per-user current tracing session is stored between executions of lttng(1). The current tracing session can be set with lttng-set-session(1). See lttng-create(1) for more information about tracing sessions.

$LTTNG_HOME/lttng-traces Default output directory of LTTng traces. This can be overridden with the --output option of the lttng-create(1) command.

$LTTNG_HOME/.lttng User LTTng runtime and configuration directory.

$LTTNG_HOME/.lttng/sessions Default location of saved user tracing sessions (see lttng-save(1) and lttng-load(1)).

/usr/local/etc/lttng/sessions System-wide location of saved tracing sessions (see lttng-save(1) and lttng-load(1)).

Note $LTTNG_HOME defaults to $HOME when not explicitly set.

Статус выхода (Exit)

0 Success

1 Command error

2 Undefined command

3 Fatal error

4 Command warning (something went wrong during the command)

Ошибки (баги) (Bugs)

If you encounter any issue or usability problem, please report it on the LTTng bug tracker <https://bugs.lttng.org/projects/lttng- tools>.

Ресурсы (Resources)

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

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

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

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

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

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

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