Provided by: trace-cmd_3.1-1_amd64
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. 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 dump - read out the meta data from a trace file
-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-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)
Written by Steven Rostedt, <email@example.com>
Copyright (C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL).