| # 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 |
| import time |
| |
| from autotest_lib.client.common_lib import error |
| from autotest_lib.client.common_lib import utils |
| from autotest_lib.client.common_lib.cros.network import xmlrpc_datatypes |
| from autotest_lib.server.cros.network import netperf_runner |
| from autotest_lib.server.cros.network import netperf_session |
| from autotest_lib.server.cros.network import wifi_cell_test_base |
| |
| |
| class network_WiFi_Perf(wifi_cell_test_base.WiFiCellTestBase): |
| """Test maximal achievable bandwidth on several channels per band. |
| |
| Conducts a performance test for a set of specified router configurations |
| and reports results as keyval pairs. |
| |
| """ |
| |
| version = 1 |
| |
| NETPERF_CONFIGS = [ |
| netperf_runner.NetperfConfig( |
| netperf_runner.NetperfConfig.TEST_TYPE_TCP_STREAM), |
| netperf_runner.NetperfConfig( |
| netperf_runner.NetperfConfig.TEST_TYPE_TCP_MAERTS), |
| netperf_runner.NetperfConfig( |
| netperf_runner.NetperfConfig.TEST_TYPE_UDP_STREAM), |
| netperf_runner.NetperfConfig( |
| netperf_runner.NetperfConfig.TEST_TYPE_UDP_MAERTS), |
| ] |
| |
| |
| def parse_additional_arguments(self, commandline_args, additional_params): |
| """Hook into super class to take control files parameters. |
| |
| @param commandline_args dict of parsed parameters from the autotest. |
| @param additional_params list of HostapConfig objects. |
| |
| """ |
| if 'governor' in commandline_args: |
| self._governor = commandline_args['governor'] |
| # validate governor string. Not all machines will support all of |
| # these governors, but this at least ensures that a potentially |
| # valid governor was passed in |
| if self._governor not in ('performance', 'powersave', 'userspace', |
| 'ondemand', 'conservative', 'schedutil'): |
| logging.warning('Unrecognized CPU governor "%s". Running test ' |
| 'without setting CPU governor...' % self._governor) |
| self._governor = None |
| else: |
| self._governor = None |
| self._ap_configs = additional_params |
| |
| |
| def do_run(self, ap_config, session, power_save, governor): |
| """Run a single set of perf tests, for a given AP and DUT config. |
| |
| @param ap_config: the AP configuration that is being used |
| @param session: a netperf session instance |
| @param power_save: whether or not to use power-save mode on the DUT |
| (boolean) |
| |
| """ |
| def get_current_governor(host): |
| """ |
| @ return the CPU governor name used on a machine. If cannot find |
| the governor info of the host, or if there are multiple |
| different governors being used on different cores, return |
| 'default'. |
| """ |
| try: |
| governors = set(utils.get_scaling_governor_states(host)) |
| if len(governors) != 1: |
| return 'default' |
| return next(iter(governors)) |
| except: |
| return 'default' |
| if governor: |
| client_governor = utils.get_scaling_governor_states( |
| self.context.client.host) |
| router_governor = utils.get_scaling_governor_states( |
| self.context.router.host) |
| utils.set_scaling_governors(governor, self.context.client.host) |
| utils.set_scaling_governors(governor, self.context.router.host) |
| governor_name = governor |
| else: |
| # try to get machine's current governor |
| governor_name = get_current_governor(self.context.client.host) |
| if governor_name != get_current_governor(self.context.router.host): |
| governor_name = 'default' |
| if governor_name == self._governor: |
| # If CPU governor is already set to self._governor, don't |
| # perform the run twice |
| return |
| |
| self.context.client.powersave_switch(power_save) |
| session.warmup_stations() |
| ps_tag = 'PS%s' % ('on' if power_save else 'off') |
| governor_tag = 'governor-%s' % governor_name |
| ap_config_tag = '_'.join([ap_config.perf_loggable_description, |
| ps_tag, governor_tag]) |
| signal_level = self.context.client.wifi_signal_level |
| signal_description = '_'.join([ap_config_tag, 'signal']) |
| self.write_perf_keyval({signal_description: signal_level}) |
| for config in self.NETPERF_CONFIGS: |
| results = session.run(config) |
| if not results: |
| logging.error('Failed to take measurement for %s', |
| config.tag) |
| continue |
| values = [result.throughput for result in results] |
| self.output_perf_value(config.tag, values, units='Mbps', |
| higher_is_better=True, |
| graph=ap_config_tag) |
| result = netperf_runner.NetperfResult.from_samples(results) |
| self.write_perf_keyval(result.get_keyval( |
| prefix='_'.join([ap_config_tag, config.tag]))) |
| if governor: |
| utils.restore_scaling_governor_states(client_governor, |
| self.context.client.host) |
| utils.restore_scaling_governor_states(router_governor, |
| self.context.router.host) |
| |
| |
| def run_once(self): |
| """Test body.""" |
| start_time = time.time() |
| for ap_config in self._ap_configs: |
| # Set up the router and associate the client with it. |
| self.context.configure(ap_config) |
| # self.context.configure has a similar check - but that one only |
| # errors out if the AP *requires* VHT i.e. AP is requesting |
| # MODE_11AC_PURE and the client does not support it. |
| # For wifi_perf, we don't want to run MODE_11AC_MIXED on the AP if |
| # the client does not support VHT, as we are guaranteed to get the |
| # same results at 802.11n/HT40 in that case. |
| if ap_config.is_11ac and not self.context.client.is_vht_supported(): |
| raise error.TestNAError('Client does not have AC support') |
| assoc_params = xmlrpc_datatypes.AssociationParameters( |
| ssid=self.context.router.get_ssid(), |
| security_config=ap_config.security_config) |
| self.context.assert_connect_wifi(assoc_params) |
| session = netperf_session.NetperfSession(self.context.client, |
| self.context.router) |
| |
| # Flag a test error if we disconnect for any reason. |
| with self.context.client.assert_no_disconnects(): |
| # Conduct the performance tests while toggling powersave mode. |
| for power_save in (True, False): |
| for governor in sorted(set([None, self._governor])): |
| self.do_run(ap_config, session, power_save, governor) |
| |
| # Clean up router and client state for the next run. |
| self.context.client.shill.disconnect(self.context.router.get_ssid()) |
| self.context.router.deconfig() |
| end_time = time.time() |
| logging.info('Running time %0.1f seconds.', end_time - start_time) |
