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trace-cmd(1)


NAME

   trace-cmd - interacts with Ftrace Linux kernel internal tracer

SYNOPSIS

   trace-cmd COMMAND [OPTIONS]

DESCRIPTION

   The trace-cmd(1) command interacts with the Ftrace tracer that is built
   inside the Linux kernel. It interfaces with the Ftrace specific files
   found in the debugfs file system under the tracing directory. A COMMAND
   must be specified to tell trace-cmd what to do.

COMMANDS

       record  - record a live trace and write a trace.dat file to the
                 local disk or to the network.

       report  - reads a trace.dat file and converts the binary data to a
                 ASCII text readable format.

       hist    - show a histogram of the events.

       stat    - show tracing (ftrace) status of the running system

       options - list the plugin options that are available to *report*

       start   - start the tracing without recording to a trace.dat file.

       stop    - stop tracing (only disables recording, overhead of tracer
                 is still in effect)

       restart - restart tracing from a previous stop (only effects recording)

       extract - extract the data from the kernel buffer and create a trace.dat
                 file.

       reset   - disables all tracing and gives back the system performance.
                 (clears all data from the kernel buffers)

       split   - splits a trace.dat file into smaller files.

       list    - list the available plugins or events that can be recorded.

       listen  - open up a port to listen for remote tracing connections.

       restore - restore the data files of a crashed run of trace-cmd record

       stack   - run and display the stack tracer

       check-events - parse format strings for all trace events and return
                      whether all formats are parseable

OPTIONS

   -h, --help
       Display the help text.

   Other options see the man page for the corresponding command.

SEE ALSO

   trace-cmd-record(1), trace-cmd-report(1), trace-cmd-hist(1),
   trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1),
   trace-cmd-reset(1), trace-cmd-restore(1), trace-cmd-stack(1),
   trace-cmd-split(1), trace-cmd-list(1), trace-cmd-listen(1),
   trace-cmd.dat(5), trace-cmd-check-events(1) trace-cmd-stat(1)

AUTHOR

   Written by Steven Rostedt, <rostedt@goodmis.org[1]>

RESOURCES

   git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git

COPYING

   Copyright (C) 2010 Red Hat, Inc. Free use of this software is granted
   under the terms of the GNU Public License (GPL).

NOTES

    1. rostedt@goodmis.org
       mailto:rostedt@goodmis.org

                              07/17/2016                      TRACE-CMD(1)



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