trace-cmd (1) - Linux Manuals
trace-cmd: interacts with Ftrace Linux kernel internal tracer
NAME
trace-cmd - interacts with Ftrace Linux kernel internal tracer
SYNOPSIS
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.
-
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
-h, --help
- Display the help text.
Other options see the man page for the corresponding command.
AUTHOR
Written by Steven Rostedt, <m[blue]rostedt [at] goodmis.orgm[][1]>
RESOURCES
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/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 [at] goodmis.org
- mailto:rostedt [at] goodmis.org
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-split(1), trace-cmd-list(1), trace-cmd-listen(1), trace-cmd.dat(5), trace-cmd-check-events(1) trace-cmd-stat(1)