Class: PerfMonger::Command::PlotCommand

Inherits:
BaseCommand show all
Defined in:
lib/perfmonger/command/plot.rb

Instance Method Summary collapse

Methods inherited from BaseCommand

register_alias, register_command

Constructor Details

#initialize ⇒ PlotCommand

Returns a new instance of PlotCommand.



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# File 'lib/perfmonger/command/plot.rb', line 13

def initialize
  @parser = OptionParser.new
  @parser.banner = "Usage: perfmonger plot [options] LOG_FILE\n\nOptions:\n"

  @data_file = nil
  @offset_time = 0.0
  @output_dir = Dir.pwd
  @output_type = 'pdf'
  @output_prefix = ''
  @save_gpfiles = false
  @disk_only = nil
  @disk_only_regex = nil
  @disk_plot_read = true
  @disk_plot_write = true
  @disk_numkey_threshold = 10
  @plot_iops_max = nil
  @gnuplot_bin = `which gnuplot`
end

Instance Method Details

#parse_args(argv) ⇒ Object 



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# File 'lib/perfmonger/command/plot.rb', line 36

def parse_args(argv)
  @parser.on('--offset-time TIME') do |time|
    @offset_time = Float(time)
  end

  @parser.on('-o', '--output-dir DIR') do |dir|
    unless File.directory?(dir)
      puts("ERROR: no such directory: #{dir}")
      puts(@parser.help)
      exit(false)
    end

    @output_dir = dir
  end

  @parser.on('--with-gnuplot GNUPLOT_BIN') do |gnuplot_bin|
    @gnuplot_bin = gnuplot_bin
  end

  @parser.on('-T', '--output-type TYPE', 'Available: pdf, png') do |typ|
    unless ['pdf', 'png'].include?(typ)
      puts("ERROR: non supported image type: #{typ}")
      puts(@parser.help)
      exit(false)
    end

    if typ != 'pdf' && ! system('which convert >/dev/null 2>&1')
      puts("ERROR: convert(1) not found.")
      puts("ERROR: ImageMagick is required for #{typ}")
      puts(@parser.help)
      exit(false)
    end

    @output_type = typ
  end

  @parser.on('-p', '--prefix PREFIX',
             'Output file name prefix.') do |prefix|
    if ! (prefix =~ /-\Z/)
      prefix += '-'
    end

    @output_prefix = prefix
  end

  @parser.on('-s', '--save',
             'Save GNUPLOT and data files.') do
    @save_gpfiles = true
  end

  @parser.on('--disk-only REGEX', "Select disk devices that matches REGEX") do |regex|
    @disk_only = regex
    @disk_only_regex = Regexp.compile(regex)
  end

  @parser.on('--plot-read-only', "Plot only READ performance for disks") do
    @disk_plot_read = true
    @disk_plot_write = false
  end

  @parser.on('--plot-write-only', "Plot only WRITE performance for disks") do
    @disk_plot_read = false
    @disk_plot_write = true
  end

  @parser.on('--plot-read-write', "Plot READ and WRITE performance for disks") do
    @disk_plot_read = true
    @disk_plot_write = true
  end

  @parser.on('--plot-numkey-threshold NUM', "Legends of per-disk plots are turned off if the number of disks is larger than this value.") do |num|
    @disk_numkey_threshold = num.to_i
  end

  @parser.on('--plot-iops-max IOPS', "Maximum of IOPS plot range (default: auto)") do |iops|
    @plot_iops_max = iops.to_f
  end

  @parser.parse!(argv)

  if argv.size == 0
    puts("ERROR: PerfMonger log file is required")
    puts(@parser.help)
    exit(false)
  end


  @data_file = File.expand_path(argv.shift)
end

#run(argv) ⇒ Object 



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# File 'lib/perfmonger/command/plot.rb', line 126

def run(argv)
  unless system('which gnuplot >/dev/null 2>&1')
    puts("ERROR: gnuplot not found")
    puts(@parser.help)
    exit(false)
  end

  parse_args(argv)

  unless system('gnuplot -e "set terminal" < /dev/null 2>&1 | grep pdfcairo >/dev/null 2>&1')
    puts("ERROR: pdfcairo is not supported by installed gnuplot")
    puts("ERROR: PerfMonger requires pdfcairo-supported gnuplot")
    puts(@parser.help)
    exit(false)
  end

  formatter_bin = ::PerfMonger::Command::CoreFinder.plot_formatter()

  @tmpdir = Dir.mktmpdir

  @disk_dat = File.expand_path("disk.dat", @tmpdir)
  @cpu_dat = File.expand_path("cpu.dat", @tmpdir)

  meta_json = nil
  cmd = [formatter_bin, "-perfmonger", @data_file, "-cpufile", @cpu_dat,
    "-diskfile", @disk_dat]
  if @disk_only_regex
    cmd << "-disk-only"
    cmd << @disk_only
  end
  IO.popen(cmd, "r") do |io|
    meta_json = io.read
  end
  if $?.exitstatus != 0
    puts("ERROR: failed to run perfmonger-plot-formatter")
    exit(false)
  end
  meta = JSON.parse(meta_json)

  plot_disk(meta)
  plot_cpu(meta)

  FileUtils.rm_rf(@tmpdir)

  true
end