trace-cmd-stat(1) — Linux manual page


TRACE-CMD-STAT(1)           libtracefs Manual          TRACE-CMD-STAT(1)

NAME         top

       trace-cmd-stat - show the status of the tracing (ftrace) system

SYNOPSIS         top

       trace-cmd stat [OPTIONS]

DESCRIPTION         top

       The trace-cmd(1) stat displays the various status of the tracing
       (ftrace) system. The status that it shows is:

       Instances: List all configured ftrace instances.

       Tracer: if one of the tracers (like function_graph) is active.
       Otherwise nothing is displayed.

       Events: Lists the events that are enable.

       Event filters: Shows any filters that are set for any events

       Function filters: Shows any filters for the function tracers

       Graph functions: Shows any functions that the function graph
       tracer should graph

       Buffers: Shows the trace buffer size if they have been expanded.
       By default, tracing buffers are in a compressed format until they
       are used. If they are compressed, the buffer display will not be

       Trace clock: If the tracing clock is anything other than the
       default "local" it will be displayed.

       Trace CPU mask: If not all available CPUs are in the tracing CPU
       mask, then the tracing CPU mask will be displayed.

       Trace max latency: Shows the value of the trace max latency if it
       is other than zero.

       Kprobes: Shows any kprobes that are defined for tracing.

       Uprobes: Shows any uprobes that are defined for tracing.

       Error log: Dump the content of ftrace error_log file.

OPTIONS         top

       -B buffer-name
           Display the status of a given buffer instance. May be
           specified more than once to display the status of multiple

           If -B is also specified, show the status of the top level
           tracing directory as well as the instance(s).

           Display the all the options along with their values. If they
           start with "no", then the option is disabled.

SEE ALSO         top

       trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1),
       trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1),
       trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-listen(1)

AUTHOR         top

       Written by Steven Rostedt, <[1]>

RESOURCES         top 

COPYING         top

       Copyright (C) 2014 Red Hat, Inc. Free use of this software is
       granted under the terms of the GNU Public License (GPL).

NOTES         top


COLOPHON         top

       This page is part of the trace-cmd (a front-end for Ftrace)
       project.  Information about the project can be found at 
       ⟨⟩.  If you have a bug report for this
       manual page, see ⟨⟩.  This page was
       obtained from the project's upstream Git repository
       ⟨⟩ on
       2023-12-22.  (At that time, the date of the most recent commit
       that was found in the repository was 2023-11-28.)  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

libtracefs                     09/24/2023              TRACE-CMD-STAT(1)

Pages that refer to this page: trace-cmd(1)