TRACE-CMD-STAT(1)

# TRACE-CMD-STAT(1) Manual Page

## NAME

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

## SYNOPSIS

trace-cmd stat [OPTIONS]

## DESCRIPTION

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 shown.

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

-B buffer-name

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

-t

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

-o

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

## SEE ALSO

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

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

## RESOURCES

https://git.kernel.org/pub/scm/utils/trace-cmd/trace-cmd.git/

## COPYING

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