def update(self):
if not self.is_available:
return
current_measurement_value = rapl_read()
current_measurement_time = time.time()
for m_idx, _ in enumerate(self.last_probe):
joule_used = ((current_measurement_value[m_idx].current -
self.last_probe[m_idx].current) /
float(self.MICRO_JOULE_IN_JOULE))
self.last_probe[m_idx] = joule_used
seconds_passed = (current_measurement_time - self.last_probe_time)
logging.debug("seconds passed %s", seconds_passed)
watts_used = float(joule_used) / float(seconds_passed)
logging.debug("watts used %s", watts_used)
logging.info("Joule_Used %d, seconds passed, %d", joule_used,
seconds_passed)
if watts_used > 0:
# The information on joules used elapses every once in a while,
# this might lead to negative readings.
# To prevent this, we keep the last value until the next update
self.last_measurement[m_idx] = watts_used
logging.info("Power reading elapsed")
self.last_probe = current_measurement_value
self.last_probe_time = current_measurement_time
def __init__(self):
Source.__init__(self)
self.name = 'Power'
self.measurement_unit = 'W'
self.pallet = ('power light', 'power dark', 'power light smooth',
'power dark smooth')
self.last_probe_time = time.time()
self.last_probe = rapl_read()
if not self.last_probe:
self.is_available = False
logging.debug("Power reading is not available")
return
self.max_power = 1
self.last_measurement = [0] * len(self.last_probe)
multi_sensors = []
for item in self.last_probe:
name = item.label
sensor_count = multi_sensors.count(name)
multi_sensors.append(name)
if 'package' not in name:
name += ",Pkg" + str(sensor_count)
self.available_sensors.append(name)