NAME | SYNOPSIS | DESCRIPTION | COMMANDS | OPTIONS | SEE ALSO | AUTHOR | RESOURCES | COPYING | NOTES | COLOPHON

TRACE-CMD(1)                                                    TRACE-CMD(1)

NAME         top

       trace-cmd - interacts with Ftrace Linux kernel internal tracer

SYNOPSIS         top

       trace-cmd COMMAND [OPTIONS]

DESCRIPTION         top

       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         top

           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         top

       -h, --help
           Display the help text.

       Other options see the man page for the corresponding command.

SEE ALSO         top

       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         top

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

RESOURCES         top

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

COPYING         top

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

NOTES         top

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

COLOPHON         top

       This page is part of the trace-cmd (a front-end for Ftrace) project.
       Information about the project can be found at [unknown -- if you
       know, please contact man-pages@man7.org] If you have a bug report for
       this manual page, send it to Steven Rostedt <rostedt@goodmis.org>.
       This page was obtained from the project's upstream Git repository 
       ⟨git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git⟩
       on 2017-03-13.  If you discover any rendering problems in this HTML
       version of the page, or you believe there is a better or more up-to-
       date source for the page, or you have corrections or improvements to
       the information in this COLOPHON (which is not part of the original
       manual page), send a mail to man-pages@man7.org

                                 12/17/2015                     TRACE-CMD(1)