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 5from autotest_lib.client.bin import test 6from autotest_lib.client.common_lib import error 7from autotest_lib.client.cros import power_suspend 8 9 10# In cases like crosbug.com/p/26289, we want results, but also want 11# to make sure we are suspending quickly enough. Retry with this amount 12# of extra suspend time to make sure we can get some results, even 13# if we throw a warning. 14EXTRA_TIME = 10 15 16 17class power_Resume(test.test): 18 """class for power_Resume test.""" 19 version = 1 20 preserve_srcdir = True 21 22 def initialize(self, suspend_state=''): 23 """ 24 Entry point. 25 26 @param suspend_state: Force to suspend to a specific 27 state ("mem" or "freeze"). If the string is empty, suspend 28 state is left to the default pref on the system. 29 """ 30 self._suspender = power_suspend.Suspender(self.resultsdir, 31 throw=True, device_times=True, 32 suspend_state=suspend_state) 33 34 35 def run_once(self, max_devs_returned=10, seconds=0, 36 ignore_kernel_warns=False): 37 try: 38 self._suspend_once(max_devs_returned, seconds, ignore_kernel_warns) 39 except error.TestWarn: 40 self._suspend_once(max_devs_returned, seconds + EXTRA_TIME, 41 ignore_kernel_warns) 42 raise 43 44 45 def _suspend_once(self, max_devs_returned, seconds, ignore_kernel_warns): 46 (results, device_times) = \ 47 self._suspender.suspend(seconds, 48 ignore_kernel_warns=ignore_kernel_warns) 49 50 # return as keyvals the slowest n devices 51 slowest_devs = sorted( 52 device_times, 53 key=device_times.get, 54 reverse=True)[:max_devs_returned] 55 for dev in slowest_devs: 56 results[dev] = device_times[dev] 57 58 self.output_perf_value(description='system_suspend', 59 value=results['seconds_system_suspend'], 60 units='sec', higher_is_better=False) 61 self.output_perf_value(description='system_resume', 62 value=results['seconds_system_resume'], 63 units='sec', higher_is_better=False) 64 self.write_perf_keyval(results) 65