blob: 2aa83a31c9ed9b10baa47cf903ca90332ead1978 [file] [log] [blame]
# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import logging, numpy, random, time
from autotest_lib.client.bin import test, utils
from autotest_lib.client.common_lib import error
from import interface
from autotest_lib.client.cros.power import power_suspend, sys_power
class power_SuspendStress(test.test):
"""Class for test."""
version = 1
def initialize(self, duration, idle=False, init_delay=0, min_suspend=0,
min_resume=5, max_resume_window=3, check_connection=True,
iterations=None, suspend_state=''):
Entry point.
@param duration: total run time of the test
@param idle: use sys_power.idle_suspend method.
(use with dummy_IdleSuspend)
@param init_delay: wait this many seconds before starting the test to
give parallel tests time to get started
@param min_suspend: suspend durations will be chosen randomly out of
the interval between min_suspend and min_suspend + 3 seconds.
@param min_resume: minimal time in seconds between suspends.
@param max_resume_window: maximum range to use between suspends. i.e.,
we will stay awake between min_resume and min_resume +
max_resume_window seconds.
@param check_connection: If true, we check that the network interface
used for testing is up after resume. Otherwsie we reboot.
@param iterations: number of times to attempt suspend. If !=None has
precedence over duration.
@param suspend_state: Force to suspend to a specific
state ("mem" or "freeze"). If the string is empty, suspend
state is left to the default pref on the system.
self._endtime = time.time()
if duration:
self._endtime += duration
self._init_delay = init_delay
self._min_suspend = min_suspend
self._min_resume = min_resume
self._max_resume_window = max_resume_window
self._check_connection = check_connection
self._iterations = iterations
self._suspend_state = suspend_state
self._method = sys_power.idle_suspend if idle else sys_power.do_suspend
def _done(self):
if self._iterations != None:
self._iterations -= 1
return self._iterations < 0
return time.time() >= self._endtime
def run_once(self):
self._suspender = power_suspend.Suspender(
self.resultsdir, method=self._method,
# Find the interface which is used for most communication.
# We assume the interface connects to the gateway and has the lowest
# metric.
if self._check_connection:
with open('/proc/net/route') as fh:
for line in fh:
fields = line.strip().split()
if fields[1] != '00000000' or not int(fields[3], 16) & 2:
interface_choices[fields[0]] = fields[6]
iface = interface.Interface(min(interface_choices))
while not self._done():
time.sleep(self._min_resume +
random.randint(0, self._max_resume_window))
# Check the network interface to the caller is still available
if self._check_connection:
# Give a 10 second window for the network to come back.
desc='Link is operational')
except utils.TimeoutError:
logging.error('Link to the server gone, reboot')
# Reboot may return; raise a TestFail() to abort too, even
# though the server likely won't see this.
raise error.TestFail('Link is gone; rebooting')
self._suspender.suspend(random.randint(0, 3) + self._min_suspend)
def postprocess_iteration(self):
if self._suspender.successes:
keyvals = {'suspend_iterations': len(self._suspender.successes)}
for key in self._suspender.successes[0]:
values = [result[key] for result in self._suspender.successes]
keyvals[key + '_mean'] = numpy.mean(values)
keyvals[key + '_stddev'] = numpy.std(values)
keyvals[key + '_min'] = numpy.amin(values)
keyvals[key + '_max'] = numpy.amax(values)
if self._suspender.failures:
total = len(self._suspender.failures)
iterations = len(self._suspender.successes) + total
timeout = kernel = firmware = spurious = 0
for failure in self._suspender.failures:
if type(failure) is sys_power.SuspendTimeout: timeout += 1
if type(failure) is sys_power.KernelError: kernel += 1
if type(failure) is sys_power.FirmwareError: firmware += 1
if type(failure) is sys_power.SpuriousWakeupError: spurious += 1
if total == kernel + timeout:
raise error.TestWarn('%d non-fatal suspend failures in %d '
'iterations (%d timeouts, %d kernel warnings)' %
(total, iterations, timeout, kernel))
if total == 1:
# just throw it as is, makes aggregation on dashboards easier
raise self._suspender.failures[0]
raise error.TestFail('%d suspend failures in %d iterations (%d '
'timeouts, %d kernel warnings, %d firmware errors, %d '
'spurious wakeups)' %
(total, iterations, timeout, kernel, firmware, spurious))
def cleanup(self):
Clean this up before we wait ages for all the log copying to finish...