def testParsePowerMetricsOutput(self):
power_monitor = powermetrics_power_monitor.PowerMetricsPowerMonitor(
mac_platform_backend.MacPlatformBackend())
if not power_monitor.CanMonitorPower():
logging.warning('Test not supported on this platform.')
return
# Not supported on Mac at this time.
self.assertFalse(power_monitor.CanMeasurePerApplicationPower())
# Supported hardware reports power samples and energy consumption.
result = _parsePowerMetricsDataFromTestFile('powermetrics_output.output')
self.assertTrue(result['energy_consumption_mwh'] > 0)
# Verify platform info exists in output.
self.assertTrue(result['platform_info']['average_frequency_hz'] > 0)
self.assertTrue(result['platform_info']['idle_percent'] > 0)
# Verify that all component entries exist in output.
component_utilization = result['component_utilization']
for k in ['gpu'] + ['cpu%d' % x for x in range(8)]:
self.assertTrue(component_utilization[k]['average_frequency_hz'] > 0)
self.assertTrue(component_utilization[k]['idle_percent'] > 0)
# Unsupported hardware doesn't.
result = _parsePowerMetricsDataFromTestFile(
'powermetrics_output_unsupported_hardware.output')
self.assertNotIn('energy_consumption_mwh', result)
def testCanMonitorPowerUsage(self):
backend = mac_platform_backend.MacPlatformBackend()
power_monitor = powermetrics_power_monitor.PowerMetricsPowerMonitor(backend)
mavericks_or_later = (
backend.GetOSVersionName() >= os_version.MAVERICKS)
# Should always be able to monitor power usage on OS Version >= 10.9 .
self.assertEqual(
power_monitor.CanMonitorPower(), mavericks_or_later,
"Error checking powermetrics availability: '%s'" % '|'.join(os.uname()))
def __init__(self):
super(MacPlatformBackend, self).__init__()
self.libproc = None
self._power_monitor = powermetrics_power_monitor.PowerMetricsPowerMonitor(
self)