'\" t
.\"     Title: trace-cmd-stat
.\"    Author: [see the "AUTHOR" section]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 04/07/2024
.\"    Manual: libtracefs Manual
.\"    Source: libtracefs
.\"  Language: English
.\"
.TH "TRACE\-CMD\-STAT" "1" "04/07/2024" "libtracefs" "libtracefs Manual"
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.SH "NAME"
trace-cmd-stat \- show the status of the tracing (ftrace) system
.SH "SYNOPSIS"
.sp
\fBtrace\-cmd stat\fR [\fIOPTIONS\fR]
.SH "DESCRIPTION"
.sp
The trace\-cmd(1) stat displays the various status of the tracing (ftrace) system\&. The status that it shows is:
.sp
\fBInstances:\fR List all configured ftrace instances\&.
.sp
\fBTracer:\fR if one of the tracers (like function_graph) is active\&. Otherwise nothing is displayed\&.
.sp
\fBEvents:\fR Lists the events that are enable\&.
.sp
\fBEvent filters:\fR Shows any filters that are set for any events
.sp
\fBFunction filters:\fR Shows any filters for the function tracers
.sp
\fBGraph functions:\fR Shows any functions that the function graph tracer should graph
.sp
\fBBuffers:\fR 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\&.
.sp
\fBTrace clock:\fR If the tracing clock is anything other than the default "local" it will be displayed\&.
.sp
\fBTrace CPU mask:\fR If not all available CPUs are in the tracing CPU mask, then the tracing CPU mask will be displayed\&.
.sp
\fBTrace max latency:\fR Shows the value of the trace max latency if it is other than zero\&.
.sp
\fBKprobes:\fR Shows any kprobes that are defined for tracing\&.
.sp
\fBUprobes:\fR Shows any uprobes that are defined for tracing\&.
.sp
\fBError log:\fR Dump the content of ftrace error_log file\&.
.SH "OPTIONS"
.PP
\fB\-B\fR \fIbuffer\-name\fR
.RS 4
Display the status of a given buffer instance\&. May be specified more than once to display the status of multiple instances\&.
.RE
.PP
\fB\-t\fR
.RS 4
If
\fB\-B\fR
is also specified, show the status of the top level tracing directory as well as the instance(s)\&.
.RE
.PP
\fB\-o\fR
.RS 4
Display the all the options along with their values\&. If they start with "no", then the option is disabled\&.
.RE
.SH "SEE ALSO"
.sp
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)
.SH "AUTHOR"
.sp
Written by Steven Rostedt, <\m[blue]\fBrostedt@goodmis\&.org\fR\m[]\&\s-2\u[1]\d\s+2>
.SH "RESOURCES"
.sp
\m[blue]\fBhttps://git\&.kernel\&.org/pub/scm/utils/trace\-cmd/trace\-cmd\&.git/\fR\m[]
.SH "COPYING"
.sp
Copyright (C) 2014 Red Hat, Inc\&. Free use of this software is granted under the terms of the GNU Public License (GPL)\&.
.SH "NOTES"
.IP " 1." 4
rostedt@goodmis.org
.RS 4
\%mailto:rostedt@goodmis.org
.RE