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trace-cmd - interacts with Ftrace Linux kernel internal tracer
*trace-cmd* 'COMMAND' ['OPTIONS']
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.
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.
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
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
*-h*, --help::
Display the help text.
Other options see the man page for the corresponding command.
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)
Written by Steven Rostedt, <>
Copyright \(C) 2010 Red Hat, Inc. Free use of this software is granted under
the terms of the GNU Public License (GPL).