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trace-cmd(1)

trace-cmd

Utility for retrieving and analyzing function tracing in the kernel

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.
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]\m[][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

REFERENCED BY

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