build/android/device_stats_monitor.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style license that can be
   5 # found in the LICENSE file.
   6
   7 """Provides iotop/top style profiling for android.
   8
   9 Usage:
  10   ./device_stats_monitor.py --hz=20 --duration=5 --outfile=/tmp/foo
  11 """
  12
  13 import optparse
  14 import os
  15 import sys
  16 import time
  17
  18 from pylib import android_commands
  19 from pylib import device_stats_monitor
  20 from pylib.utils import test_options_parser
  21
  22
  23 def main(argv):
  24   option_parser = optparse.OptionParser()
  25   option_parser.add_option('--hz', type='int', default=20,
  26                            help='Number of samples/sec.')
  27   option_parser.add_option('--duration', type='int', default=5,
  28                            help='Seconds to monitor.')
  29   option_parser.add_option('--outfile', default='/tmp/devicestatsmonitor',
  30                            help='Location to start output file.')
  31   test_options_parser.AddBuildTypeOption(option_parser)
  32   options, args = option_parser.parse_args(argv)
  33
  34   monitor = device_stats_monitor.DeviceStatsMonitor(
  35       android_commands.AndroidCommands(), options.hz, options.build_type)
  36   monitor.Start()
  37   print 'Waiting for %d seconds while profiling.' % options.duration
  38   time.sleep(options.duration)
  39   url = monitor.StopAndCollect(options.outfile)
  40   print 'View results in browser at %s' % url
  41
  42 if __name__ == '__main__':
  43   sys.exit(main(sys.argv))