def test_cpu_usage(self, local_path):
"""
Runs the video cpu usage test.
@param local_path: the path to the video file.
@return a dictionary that contains the test result.
"""
def get_cpu_usage(cr):
time.sleep(STABILIZATION_DURATION)
cpu_usage_start = site_utils.get_cpu_usage()
time.sleep(MEASUREMENT_DURATION)
cpu_usage_end = site_utils.get_cpu_usage()
return site_utils.compute_active_cpu_time(cpu_usage_start,
cpu_usage_end) * 100
if not utils.wait_for_idle_cpu(WAIT_FOR_IDLE_CPU_TIMEOUT,
CPU_IDLE_USAGE):
raise error.TestError('Could not get idle CPU.')
if not utils.wait_for_cool_machine():
raise error.TestError('Could not get cool machine.')
# Stop the thermal service that may change the cpu frequency.
services = service_stopper.ServiceStopper(THERMAL_SERVICES)
services.stop_services()
# Set the scaling governor to performance mode to set the cpu to the
# highest frequency available.
original_governors = utils.set_high_performance_mode()
try:
return self.test_webrtc(local_path, get_cpu_usage)
finally:
services.restore_services()
utils.restore_scaling_governor_states(original_governors)
def test_cpu_usage(self, local_path):
"""
Runs the video cpu usage test.
@param local_path: the path to the video file.
@return a dictionary that contains the test result.
"""
def get_cpu_usage(cr):
time.sleep(STABILIZATION_DURATION)
cpu_usage_start = utils.get_cpu_usage()
time.sleep(MEASUREMENT_DURATION)
cpu_usage_end = utils.get_cpu_usage()
return utils.compute_active_cpu_time(cpu_usage_start,
cpu_usage_end) * 100
# crbug/753292 - APNG login pictures increase CPU usage. Move the more
# strict idle checks after the login phase.
utils.wait_for_idle_cpu(WAIT_FOR_IDLE_CPU_TIMEOUT, CPU_IDLE_USAGE)
utils.wait_for_cool_machine()
if not utils.wait_for_idle_cpu(WAIT_FOR_IDLE_CPU_TIMEOUT,
CPU_IDLE_USAGE):
logging.warning('Could not get idle CPU pre login.')
if not utils.wait_for_cool_machine():
logging.warning('Could not get cold machine pre login.')
# Stop the thermal service that may change the cpu frequency.
self._service_stopper = service_stopper.ServiceStopper(
THERMAL_SERVICES)
self._service_stopper.stop_services()
# Set the scaling governor to performance mode to set the cpu to the
# highest frequency available.
self._original_governors = utils.set_high_performance_mode()
return self.test_webrtc(local_path, get_cpu_usage)
def __enter__(self):
# Stop the thermal service that may change the cpu frequency.
self._service_stopper = service_stopper.ServiceStopper(THERMAL_SERVICES)
self._service_stopper.stop_services()
if not utils.wait_for_idle_cpu(
WAIT_FOR_IDLE_CPU_TIMEOUT, CPU_IDLE_USAGE):
raise error.TestError('Could not get idle CPU.')
if not utils.wait_for_cool_machine():
raise error.TestError('Could not get cold machine.')
# Set the scaling governor to performance mode to set the cpu to the
# highest frequency available.
self._original_governors = utils.set_high_performance_mode()
return self
def __init__(self):
self._service_stopper = None
# Keep a copy of the current state for cleanup.
self._temperature_init = utils.get_current_temperature_max()
self._temperature_critical = utils.get_temperature_critical()
self._original_governors = utils.set_high_performance_mode()
self._error_reason = None
if not utils.wait_for_idle_cpu(60.0, 0.1):
self._error_reason = 'Could not get idle CPU.'
return
if not utils.wait_for_cool_machine():
self._error_reason = 'Could not get cold machine.'
return
self._temperature_cold = utils.get_current_temperature_max()
self._temperature_max = self._temperature_cold
threading.Thread(target=self._monitor_performance_state).start()
# Should be last just in case we had a runaway process.
self._stop_thermal_throttling()
