1TRACE-CMD-STAT(1) libtracefs Manual TRACE-CMD-STAT(1)
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6 trace-cmd-stat - show the status of the tracing (ftrace) system
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9 trace-cmd stat [OPTIONS]
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12 The trace-cmd(1) stat displays the various status of the tracing
13 (ftrace) system. The status that it shows is:
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15 Instances: List all configured ftrace instances.
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17 Tracer: if one of the tracers (like function_graph) is active.
18 Otherwise nothing is displayed.
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20 Events: Lists the events that are enable.
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22 Event filters: Shows any filters that are set for any events
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24 Function filters: Shows any filters for the function tracers
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26 Graph functions: Shows any functions that the function graph tracer
27 should graph
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29 Buffers: Shows the trace buffer size if they have been expanded. By
30 default, tracing buffers are in a compressed format until they are
31 used. If they are compressed, the buffer display will not be shown.
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33 Trace clock: If the tracing clock is anything other than the default
34 "local" it will be displayed.
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36 Trace CPU mask: If not all available CPUs are in the tracing CPU mask,
37 then the tracing CPU mask will be displayed.
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39 Trace max latency: Shows the value of the trace max latency if it is
40 other than zero.
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42 Kprobes: Shows any kprobes that are defined for tracing.
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44 Uprobes: Shows any uprobes that are defined for tracing.
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46 Error log: Dump the content of ftrace error_log file.
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49 -B buffer-name
50 Display the status of a given buffer instance. May be specified
51 more than once to display the status of multiple instances.
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53 -t
54 If -B is also specified, show the status of the top level tracing
55 directory as well as the instance(s).
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57 -o
58 Display the all the options along with their values. If they start
59 with "no", then the option is disabled.
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62 trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1),
63 trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1),
64 trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-listen(1)
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67 Written by Steven Rostedt, <rostedt@goodmis.org[1]>
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70 https://git.kernel.org/pub/scm/utils/trace-cmd/trace-cmd.git/
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73 Copyright (C) 2014 Red Hat, Inc. Free use of this software is granted
74 under the terms of the GNU Public License (GPL).
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77 1. rostedt@goodmis.org
78 mailto:rostedt@goodmis.org
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82libtracefs 07/23/2022 TRACE-CMD-STAT(1)