Manual: trace-cmd

TRACE-CMD(1)					      libtracefs Manual						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.

	   set	   - set a ftrace configuration parameter.

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

	   stream  - Start tracing and read the output directly

	   profile - Start profiling and read the output directly

	   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.

	   show	   - display the contents of one of the Ftrace Linux kernel tracing files

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

	   clear   - clear the content of the Ftrace ring 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.

	   agent   - listen on a vsocket for trace clients

	   setup-guest - create FIFOs for tracing guest VMs

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

	   snapshot- take snapshot of running trace

	   stack   - run and display the stack tracer

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

	   convert   - convert trace files

	   attach   - attach a host trace.dat file to a guest trace.dat file

	   dump	   - read out the meta data from a trace file

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-convert(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), trace-cmd-attach(1)

AUTHOR
       Written by Steven Rostedt, 

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

libtracefs						 01/22/2026						TRACE-CMD(1)