1 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 import logging, time 6 from autotest_lib.client.bin import test 7 from autotest_lib.client.cros import power_status 8 9 10 class power_StatsUSB(test.test): 11 version = 1 12 13 14 def run_once(self, test_time=60): 15 usb = power_status.USBSuspendStats() 16 17 # get USB percent active since boot 18 usb.incremental = False 19 stats = usb.refresh() 20 logging.info('USB active time since boot: %.2f%%', stats['active']) 21 22 # sleep for some time 23 time.sleep(test_time) 24 25 # get USB percent active during the test time 26 usb.incremental = True 27 stats = usb.refresh() 28 logging.info('USB active time in the last %d seconds: %.2f%%', 29 test_time, stats['active']) 30
