trace-cmd (1) Linux Manual Page
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.
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)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.gitCopying
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