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b4c138244f
This change is made in anticipation of needing more than one kind of reader in future. Most notably, a reader to extract data from the MySQL results database would be a nice addition. BUG=None TEST=run showbootdata on any pre-existing data set Change-Id: I5811aa1427a2714ce6ba392cdec584b4236162fd Reviewed-on: http://gerrit.chromium.org/gerrit/2644 Reviewed-by: Mike Truty <truty@chromium.org> Tested-by: Richard Barnette <jrbarnette@chromium.org>
140 lines
4.6 KiB
Python
Executable File
140 lines
4.6 KiB
Python
Executable File
#!/usr/bin/python
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# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""A command to display summary statistics from runs of 'bootperf'.
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Command line options allow selecting from one of two sets of
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performance statistics: The boot time statistics (selected by
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--timestats) measure time spent from kernel startup in milliseconds.
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The disk statistics (selected by --diskstats) measure total bytes
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read from the boot device since kernel startup.
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Boot time statistics are recorded as cumulative time (or disk read)
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since kernel startup, measured when specific events occur during
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boot. Events include such things as 'startup', the moment when the
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upstart 'startup' job begins running, and 'login', when the
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Chrome OS login screen is displayed. By default, all recorded events
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are included in the output; command line options allow restricting
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the view to a selected subset of events.
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Separate command line options allow selecting from one of two
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different display modes. When --averages is selected, the display
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shows the average value and sample standard deviation (as a percent
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of the average) for all selected events. The --averages display also
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calculates the time (or bytes) between adjacent events, and shows
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the avearage and sample standard deviation of the differences.
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The --rawdata display shows the raw data value associated with each
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event for each boot: Each line of output represents the event values
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for one boot cycle.
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"""
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import sys
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import optparse
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import resultsdir
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import perfprinter
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_USAGE = "%prog [options] [results-directory ...]"
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_DESCRIPTION = """\
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Summarize boot time performance results. The result directory
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arguments are directories previously specified as output for the
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'bootperf' script.
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"""
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def _SetupOptions():
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optparser = optparse.OptionParser(usage=_USAGE, description=_DESCRIPTION)
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optgroup = optparse.OptionGroup(
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optparser, "Selecting boot time or disk statistics (choose one)")
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optgroup.add_option(
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"-t", "--timestats", action="store_true",
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dest="use_timestats",
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help="use statistics for time since kernel startup (default)")
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optgroup.add_option(
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"-d", "--diskstats", action="store_true",
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dest="use_diskstats",
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help="use statistics for bytes read since kernel startup")
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optparser.add_option_group(optgroup)
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optparser.set_defaults(use_diskstats=False)
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optparser.set_defaults(use_timestats=False)
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optgroup = optparse.OptionGroup(optparser, "Event selection")
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optgroup.add_option(
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"-e", "--event", action="append",
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dest="eventnames",
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help="restrict statistics to the comma-separated list of events")
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optparser.add_option_group(optgroup)
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optgroup = optparse.OptionGroup(
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optparser, "Display mode selection (choose one)")
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optgroup.add_option(
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"-a", "--averages", action="store_true",
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dest="print_averages",
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help="display a summary of the averages of chosen statistics (default)")
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optgroup.add_option(
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"-r", "--rawdata", action="store_true",
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dest="print_raw",
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help="display raw data from all boot iterations")
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optparser.add_option_group(optgroup)
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optparser.set_defaults(print_averages=False)
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optparser.set_defaults(print_raw=False)
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return optparser
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def _ProcessDisplayOptions(options):
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display_count = 0
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if options.print_averages:
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display_count += 1
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printfunc = perfprinter.PrintStatisticsSummary
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if options.print_raw:
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display_count += 1
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printfunc = perfprinter.PrintRawData
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if display_count == 0:
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printfunc = perfprinter.PrintStatisticsSummary
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elif display_count > 1:
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print >>sys.stderr, "Can't use -a and -r together.\n"
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return None
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return printfunc
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def _ProcessStatsOptions(options):
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if options.use_timestats and options.use_diskstats:
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print >>sys.stderr, "Can't use -t and -d together.\n"
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return None
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return not options.use_diskstats
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def _ProcessKeylistOptions(options):
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if not options.eventnames:
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return None
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keylist = []
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for kl in options.eventnames:
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keylist.extend(kl.split(','))
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return keylist
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def main(argv):
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optparser = _SetupOptions()
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(options, args) = optparser.parse_args(argv)
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printfunc = _ProcessDisplayOptions(options)
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use_timestats = _ProcessStatsOptions(options)
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keylist = _ProcessKeylistOptions(options)
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if printfunc is None or use_timestats is None:
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optparser.print_help()
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sys.exit(1)
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if not args:
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args = ["."]
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printfunc(resultsdir.ReadResultsDirectory,
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args, use_timestats, keylist)
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if __name__ == "__main__":
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main(sys.argv[1:])
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