1TRACE-CMD-HIST(1)                                            TRACE-CMD-HIST(1)
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NAME

6       trace-cmd-hist - show histogram of events in trace.dat file
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SYNOPSIS

9       trace-cmd hist [OPTIONS][input-file]
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DESCRIPTION

12       The trace-cmd(1) hist displays a histogram form from the trace.dat
13       file. Instead of showing the events as they were ordered, it creates a
14       histogram that can be displayed per task or for all tasks where the
15       most common events appear first. It uses the function tracer and call
16       stacks that it finds to try to put together a call graph of the events.
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OPTIONS

19       -i input-file
20           By default, trace-cmd hist will read the file trace.dat. But the -i
21           option open up the given input-file instead. Note, the input file
22           may also be specified as the last item on the command line.
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24       -P
25           To compact all events and show the call graphs by ignoring tasks
26           and different PIDs, add the -P to do so. Instead of showing the
27           task name, it will group all chains together and show "<all pids>".
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SEE ALSO

30       trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1),
31       trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1),
32       trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-listen(1)
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AUTHOR

35       Written by Steven Rostedt, <rostedt@goodmis.org[1]>
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RESOURCES

38       git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git
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COPYING

41       Copyright (C) 2010 Red Hat, Inc. Free use of this software is granted
42       under the terms of the GNU Public License (GPL).
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NOTES

45        1. rostedt@goodmis.org
46           mailto:rostedt@goodmis.org
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50                                  02/03/2019                 TRACE-CMD-HIST(1)