trace-cmd - Man Page

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, ā€‰--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, <rostedt@goodmis.org[1]>

Resources

https://git.kernel.org/pub/scm/utils/trace-cmd/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@goodmis.org
mailto:rostedt@goodmis.org

Referenced By

kvm_stat(1), libtracecmd(3), libtraceevent(3), strace(1), tep_alloc(3), tep_data_type(3), tep_event_common_fields(3), tep_filter_alloc(3), tep_find_common_field(3), tep_find_event(3), tep_find_function(3), tep_get_any_field_val(3), tep_get_cpus(3), tep_get_event(3), tep_get_header_page_size(3), tep_get_long_size(3), tep_get_page_size(3), tep_is_bigendian(3), tep_is_file_bigendian(3), tep_list_events(3), tep_load_plugins(3), tep_parse_event(3), tep_parse_header_page(3), tep_parse_saved_cmdlines(3), tep_print_event(3), tep_print_field(3), tep_print_printk(3), tep_read_number(3), tep_read_number_field(3), tep_register_comm(3), tep_register_event_handler(3), tep_register_print_function(3), tep_set_flag(3), tep_strerror(3), tracecmd_buffer_instances(3), trace-cmd-check-events(1), trace-cmd-clear(1), trace-cmd.dat(5), trace-cmd-dump(1), trace-cmd-extract(1), tracecmd_get_traceid(3), trace-cmd-hist(1), trace-cmd-list(1), trace-cmd-listen(1), trace-cmd-mem(1), tracecmd_open(3), trace-cmd-options(1), trace-cmd-profile(1), tracecmd_read_cpu_first(3), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-reset(1), trace-cmd-restore(1), trace-cmd-set(1), trace-cmd-show(1), trace-cmd-snapshot(1), trace-cmd-split(1), trace-cmd-stack(1), trace-cmd-start(1), trace-cmd-stat(1), trace-cmd-stop(1), trace-cmd-stream(1), trace_seq_init(3).

04/23/2021