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#!/usr/bin/env python
#
# Copyright 2015-2016 Ettus Research LLC
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
""" Test using benchmark_rate. """
import re
from uhd_test_base import uhd_example_test_case
class uhd_benchmark_rate_test(uhd_example_test_case):
"""
Run benchmark_rate in various configurations.
"""
tests = {}
def setup_example(self):
"""
Set args.
"""
self.test_params = uhd_benchmark_rate_test.tests
def run_test(self, test_name, test_args):
"""
Runs benchmark_rate with the given parameters. Parses output and writes
results to file.
We always run both tx and rx.
"""
rel_samp_err_threshold = 0.1 # 10% off is still quite generous
samp_rate = test_args.get('rate', 1e6)
duration = test_args.get('duration', 1)
chan = test_args.get('chan', '0')
n_chans = len(chan.split(","))
expected_samples = n_chans * duration * samp_rate
self.log.info('Running test {n}, Channel = {c}, Sample Rate = {r}'.format(
n=test_name, c=chan, r=samp_rate,
))
args = [
self.create_addr_args_str(),
'--duration', str(duration),
'--channels', str(chan),
]
if 'tx' in test_args.get('direction', ''):
args.append('--tx_rate')
args.append(str(samp_rate))
if 'rx' in test_args.get('direction', ''):
args.append('--rx_rate')
args.append(str(samp_rate))
(app, run_results) = self.run_example('benchmark_rate', args)
match = re.search(r'(Num received samples):\s*(.*)', app.stdout)
run_results['num_rx_samples'] = int(match.group(2)) if match else -1
if run_results['num_rx_samples'] != -1:
run_results['rel_rx_samples_error'] = 1.0 * abs(run_results['num_rx_samples'] - expected_samples) / expected_samples
else:
run_results['rel_rx_samples_error'] = 100
match = re.search(r'(Num dropped samples):\s*(.*)', app.stdout)
run_results['num_rx_dropped'] = int(match.group(2)) if match else -1
match = re.search(r'(Num overflows detected):\s*(.*)', app.stdout)
run_results['num_rx_overruns'] = int(match.group(2)) if match else -1
match = re.search(r'(Num transmitted samples):\s*(.*)', app.stdout)
run_results['num_tx_samples'] = int(match.group(2)) if match else -1
if run_results['num_tx_samples'] != -1:
run_results['rel_tx_samples_error'] = 1.0 * abs(run_results['num_tx_samples'] - expected_samples) / expected_samples
else:
run_results['rel_tx_samples_error'] = 100
match = re.search(r'(Num sequence errors):\s*(.*)', app.stdout)
run_results['num_tx_seqerrs'] = int(match.group(2)) if match else -1
match = re.search(r'(Num underflows detected):\s*(.*)', app.stdout)
run_results['num_tx_underruns'] = int(match.group(2)) if match else -1
match = re.search(r'(Num timeouts):\s*(.*)', app.stdout)
run_results['num_timeouts'] = int(match.group(2)) if match else -1
run_results['passed'] = all([
run_results['return_code'] == 0,
run_results['num_rx_dropped'] == 0,
run_results['num_tx_seqerrs'] == 0,
run_results['num_tx_underruns'] <= test_args.get('acceptable-underruns', 0),
run_results['num_rx_samples'] > 0,
run_results['num_tx_samples'] > 0,
run_results['num_timeouts'] == 0,
run_results['rel_rx_samples_error'] < rel_samp_err_threshold,
run_results['rel_tx_samples_error'] < rel_samp_err_threshold,
])
self.report_example_results(test_name, run_results)
return run_results
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