esp-idf/tools/ci/python_packages/idf_iperf_test_util/IperfUtility.py

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import os
import re
import subprocess
import time
from builtins import object, range, str
from idf_iperf_test_util import LineChart
from tiny_test_fw import DUT, Utility
try:
from typing import Any, Tuple
except ImportError:
# Only used for type annotations
pass
# configurations
TEST_TIME = TEST_TIMEOUT = 66
WAIT_AP_POWER_ON_TIMEOUT = 90
SCAN_TIMEOUT = 3
SCAN_RETRY_COUNT = 3
# constants
FAILED_TO_SCAN_RSSI = -97
INVALID_HEAP_SIZE = 0xFFFFFFFF
PC_IPERF_TEMP_LOG_FILE = '.tmp_iperf.log'
class TestResult(object):
""" record, analysis test result and convert data to output format """
PC_BANDWIDTH_LOG_PATTERN = re.compile(r'(\d+\.\d+)\s*-\s*(\d+.\d+)\s+sec\s+[\d.]+\s+MBytes\s+([\d.]+)\s+Mbits\/sec')
DUT_BANDWIDTH_LOG_PATTERN = re.compile(r'(\d+)-\s+(\d+)\s+sec\s+([\d.]+)\s+Mbits/sec')
ZERO_POINT_THRESHOLD = -88 # RSSI, dbm
ZERO_THROUGHPUT_THRESHOLD = -92 # RSSI, dbm
BAD_POINT_RSSI_THRESHOLD = -75 # RSSI, dbm
BAD_POINT_MIN_THRESHOLD = 10 # Mbps
BAD_POINT_PERCENTAGE_THRESHOLD = 0.3
# we need at least 1/2 valid points to qualify the test result
THROUGHPUT_QUALIFY_COUNT = TEST_TIME // 2
RSSI_RANGE = [-x for x in range(10, 100)]
ATT_RANGE = [x for x in range(0, 64)]
def __init__(self, proto, direction, config_name): # type: (str, str, str) -> None
self.proto = proto
self.direction = direction
self.config_name = config_name
self.throughput_by_rssi = dict() # type: dict
self.throughput_by_att = dict() # type: dict
self.att_rssi_map = dict() # type: dict
self.heap_size = INVALID_HEAP_SIZE
self.error_list = [] # type: list[str]
def _save_result(self, throughput, ap_ssid, att, rssi, heap_size): # type: (float, str, int, int, str) -> None
"""
save the test results:
* record the better throughput if att/rssi is the same.
* record the min heap size.
"""
if ap_ssid not in self.att_rssi_map:
# for new ap, create empty dict()
self.throughput_by_att[ap_ssid] = dict()
self.throughput_by_rssi[ap_ssid] = dict()
self.att_rssi_map[ap_ssid] = dict()
self.att_rssi_map[ap_ssid][att] = rssi
def record_throughput(database, key_value): # type: (dict, int) -> None
try:
# we save the larger value for same att
if throughput > database[ap_ssid][key_value]:
database[ap_ssid][key_value] = throughput
except KeyError:
database[ap_ssid][key_value] = throughput
record_throughput(self.throughput_by_att, att)
record_throughput(self.throughput_by_rssi, rssi)
if int(heap_size) < self.heap_size:
self.heap_size = int(heap_size)
def add_result(self, raw_data, ap_ssid, att, rssi, heap_size): # type: (str, str, int, int, str) -> float
"""
add result for one test
:param raw_data: iperf raw data
:param ap_ssid: ap ssid that tested
:param att: attenuate value
:param rssi: AP RSSI
:param heap_size: min heap size during test
:return: throughput
"""
fall_to_0_recorded = 0
throughput_list = []
max_throughput = 0.0
result_list = self.PC_BANDWIDTH_LOG_PATTERN.findall(raw_data)
if not result_list:
# failed to find raw data by PC pattern, it might be DUT pattern
result_list = self.DUT_BANDWIDTH_LOG_PATTERN.findall(raw_data)
for result in result_list:
t_start = float(result[0])
t_end = float(result[1])
throughput = float(result[2])
if int(t_end - t_start) != 1:
# this could be summary, ignore this
continue
throughput_list.append(throughput)
max_throughput = max(max_throughput, throughput)
if throughput == 0 and rssi > self.ZERO_POINT_THRESHOLD \
and fall_to_0_recorded < 1:
# throughput fall to 0 error. we only record 1 records for one test
self.error_list.append('[Error][fall to 0][{}][att: {}][rssi: {}]: 0 throughput interval: {}-{}'
.format(ap_ssid, att, rssi, result[0], result[1]))
fall_to_0_recorded += 1
if len(throughput_list) < self.THROUGHPUT_QUALIFY_COUNT:
self.error_list.append('[Error][Fatal][{}][att: {}][rssi: {}]: Only {} throughput values found, expected at least {}'
.format(ap_ssid, att, rssi, len(throughput_list), self.THROUGHPUT_QUALIFY_COUNT))
max_throughput = 0.0
if max_throughput == 0 and rssi > self.ZERO_THROUGHPUT_THRESHOLD:
self.error_list.append('[Error][Fatal][{}][att: {}][rssi: {}]: No throughput data found'
.format(ap_ssid, att, rssi))
self._save_result(max_throughput, ap_ssid, att, rssi, heap_size)
return max_throughput
def post_analysis(self): # type: () -> None
"""
some rules need to be checked after we collected all test raw data:
1. throughput value 30% worse than the next point with lower RSSI
2. throughput value 30% worse than the next point with larger attenuate
"""
def analysis_bad_point(data, index_type): # type: (dict, str) -> None
for ap_ssid in data:
result_dict = data[ap_ssid]
index_list = list(result_dict.keys())
index_list.sort()
if index_type == 'att':
index_list.reverse()
for i, index_value in enumerate(index_list[1:]):
if index_value < self.BAD_POINT_RSSI_THRESHOLD or \
result_dict[index_list[i]] < self.BAD_POINT_MIN_THRESHOLD:
continue
_percentage = result_dict[index_value] / result_dict[index_list[i]]
if _percentage < 1 - self.BAD_POINT_PERCENTAGE_THRESHOLD:
self.error_list.append('[Error][Bad point][{}][{}: {}]: drop {:.02f}%'
.format(ap_ssid, index_type, index_value,
(1 - _percentage) * 100))
analysis_bad_point(self.throughput_by_rssi, 'rssi')
analysis_bad_point(self.throughput_by_att, 'att')
def draw_throughput_figure(self, path, ap_ssid, draw_type): # type: (str, str, str) -> str
"""
:param path: folder to save figure. make sure the folder is already created.
:param ap_ssid: ap ssid string or a list of ap ssid string
:param draw_type: "att" or "rssi"
:return: file_name
"""
if draw_type == 'rssi':
type_name = 'RSSI'
data = self.throughput_by_rssi
range_list = self.RSSI_RANGE
elif draw_type == 'att':
type_name = 'Att'
data = self.throughput_by_att
range_list = self.ATT_RANGE
else:
raise AssertionError('draw type not supported')
if isinstance(ap_ssid, list):
file_name = 'ThroughputVs{}_{}_{}.html'.format(type_name, self.proto, self.direction)
else:
file_name = 'ThroughputVs{}_{}_{}.html'.format(type_name, self.proto, self.direction)
LineChart.draw_line_chart(os.path.join(path, file_name),
'Throughput Vs {} ({} {})'.format(type_name, self.proto, self.direction),
'{} (dbm)'.format(type_name),
'Throughput (Mbps)',
data, range_list)
return file_name
def draw_rssi_vs_att_figure(self, path, ap_ssid): # type: (str, str) -> str
"""
:param path: folder to save figure. make sure the folder is already created.
:param ap_ssid: ap to use
:return: file_name
"""
if isinstance(ap_ssid, list):
file_name = 'AttVsRSSI.html'
else:
file_name = 'AttVsRSSI.html'
LineChart.draw_line_chart(os.path.join(path, file_name),
'Att Vs RSSI',
'Att (dbm)',
'RSSI (dbm)',
self.att_rssi_map,
self.ATT_RANGE)
return file_name
def get_best_throughput(self): # type: () -> Any
""" get the best throughput during test """
best_for_aps = [max(self.throughput_by_att[ap_ssid].values())
for ap_ssid in self.throughput_by_att]
return max(best_for_aps)
def __str__(self): # type: () -> str
"""
returns summary for this test:
1. test result (success or fail)
2. best performance for each AP
3. min free heap size during test
"""
if self.throughput_by_att:
ret = '[{}_{}][{}]: {}\r\n\r\n'.format(self.proto, self.direction, self.config_name,
'Fail' if self.error_list else 'Success')
ret += 'Performance for each AP:\r\n'
for ap_ssid in self.throughput_by_att:
ret += '[{}]: {:.02f} Mbps\r\n'.format(ap_ssid, max(self.throughput_by_att[ap_ssid].values()))
if self.heap_size != INVALID_HEAP_SIZE:
ret += 'Minimum heap size: {}'.format(self.heap_size)
else:
ret = ''
return ret
class IperfTestUtility(object):
""" iperf test implementation """
def __init__(self, dut, config_name, ap_ssid, ap_password,
pc_nic_ip, pc_iperf_log_file, test_result=None): # type: (str, str, str, str, str, str, Any) -> None
self.config_name = config_name
self.dut = dut
self.pc_iperf_log_file = pc_iperf_log_file
self.ap_ssid = ap_ssid
self.ap_password = ap_password
self.pc_nic_ip = pc_nic_ip
self.fail_to_scan = 0
self.lowest_rssi_scanned = 0
if test_result:
self.test_result = test_result
else:
self.test_result = {
'tcp_tx': TestResult('tcp', 'tx', config_name),
'tcp_rx': TestResult('tcp', 'rx', config_name),
'udp_tx': TestResult('udp', 'tx', config_name),
'udp_rx': TestResult('udp', 'rx', config_name),
}
def setup(self): # type: (Any) -> Tuple[str,int]
"""
setup iperf test:
1. kill current iperf process
2. reboot DUT (currently iperf is not very robust, need to reboot DUT)
3. scan to get AP RSSI
4. connect to AP
"""
try:
subprocess.check_output('sudo killall iperf 2>&1 > /dev/null', shell=True)
except subprocess.CalledProcessError:
pass
time.sleep(5)
self.dut.write('restart')
self.dut.expect_any('iperf>', 'esp32>')
self.dut.write('scan {}'.format(self.ap_ssid))
for _ in range(SCAN_RETRY_COUNT):
try:
rssi = int(self.dut.expect(re.compile(r'\[{}]\[rssi=(-\d+)]'.format(self.ap_ssid)),
timeout=SCAN_TIMEOUT)[0])
break
except DUT.ExpectTimeout:
continue
else:
raise AssertionError('Failed to scan AP')
self.dut.write('sta {} {}'.format(self.ap_ssid, self.ap_password))
dut_ip = self.dut.expect(re.compile(r'sta ip: ([\d.]+), mask: ([\d.]+), gw: ([\d.]+)'))[0]
return dut_ip, rssi
def _save_test_result(self, test_case, raw_data, att, rssi, heap_size): # type: (str, str, int, int, int) -> Any
return self.test_result[test_case].add_result(raw_data, self.ap_ssid, att, rssi, heap_size)
def _test_once(self, proto, direction, bw_limit): # type: (Any, str, str, int) -> Tuple[str, int, int]
""" do measure once for one type """
# connect and scan to get RSSI
dut_ip, rssi = self.setup()
assert direction in ['rx', 'tx']
assert proto in ['tcp', 'udp']
# run iperf test
if direction == 'tx':
with open(PC_IPERF_TEMP_LOG_FILE, 'w') as f:
if proto == 'tcp':
process = subprocess.Popen(['iperf', '-s', '-B', self.pc_nic_ip,
'-t', str(TEST_TIME), '-i', '1', '-f', 'm'],
stdout=f, stderr=f)
if bw_limit > 0:
self.dut.write('iperf -c {} -i 1 -t {} -b {}'.format(self.pc_nic_ip, TEST_TIME, bw_limit))
else:
self.dut.write('iperf -c {} -i 1 -t {}'.format(self.pc_nic_ip, TEST_TIME))
else:
process = subprocess.Popen(['iperf', '-s', '-u', '-B', self.pc_nic_ip,
'-t', str(TEST_TIME), '-i', '1', '-f', 'm'],
stdout=f, stderr=f)
if bw_limit > 0:
self.dut.write('iperf -c {} -u -i 1 -t {} -b {}'.format(self.pc_nic_ip, TEST_TIME, bw_limit))
else:
self.dut.write('iperf -c {} -u -i 1 -t {}'.format(self.pc_nic_ip, TEST_TIME))
for _ in range(TEST_TIMEOUT):
if process.poll() is not None:
break
time.sleep(1)
else:
process.terminate()
with open(PC_IPERF_TEMP_LOG_FILE, 'r') as f:
pc_raw_data = server_raw_data = f.read()
else:
with open(PC_IPERF_TEMP_LOG_FILE, 'w') as f:
if proto == 'tcp':
self.dut.write('iperf -s -i 1 -t {}'.format(TEST_TIME))
# wait until DUT TCP server created
try:
self.dut.expect('iperf tcp server create successfully', timeout=1)
except DUT.ExpectTimeout:
# compatible with old iperf example binary
Utility.console_log('create iperf tcp server fail')
if bw_limit > 0:
process = subprocess.Popen(['iperf', '-c', dut_ip, '-b', str(bw_limit) + 'm',
'-t', str(TEST_TIME), '-f', 'm'], stdout=f, stderr=f)
else:
process = subprocess.Popen(['iperf', '-c', dut_ip,
'-t', str(TEST_TIME), '-f', 'm'], stdout=f, stderr=f)
for _ in range(TEST_TIMEOUT):
if process.poll() is not None:
break
time.sleep(1)
else:
process.terminate()
else:
self.dut.write('iperf -s -u -i 1 -t {}'.format(TEST_TIME))
# wait until DUT TCP server created
try:
self.dut.expect('iperf udp server create successfully', timeout=1)
except DUT.ExpectTimeout:
# compatible with old iperf example binary
Utility.console_log('create iperf udp server fail')
if bw_limit > 0:
process = subprocess.Popen(['iperf', '-c', dut_ip, '-u', '-b', str(bw_limit) + 'm',
'-t', str(TEST_TIME), '-f', 'm'], stdout=f, stderr=f)
for _ in range(TEST_TIMEOUT):
if process.poll() is not None:
break
time.sleep(1)
else:
process.terminate()
else:
for bandwidth in range(50, 101, 5):
process = subprocess.Popen(['iperf', '-c', dut_ip, '-u', '-b', str(bandwidth) + 'm',
'-t', str(TEST_TIME / 11), '-f', 'm'], stdout=f, stderr=f)
for _ in range(TEST_TIMEOUT):
if process.poll() is not None:
break
time.sleep(1)
else:
process.terminate()
server_raw_data = self.dut.read()
with open(PC_IPERF_TEMP_LOG_FILE, 'r') as f:
pc_raw_data = f.read()
# save PC iperf logs to console
with open(self.pc_iperf_log_file, 'a+') as f:
f.write('## [{}] `{}`\r\n##### {}'
.format(self.config_name,
'{}_{}'.format(proto, direction),
time.strftime('%m-%d %H:%M:%S', time.localtime(time.time()))))
f.write('\r\n```\r\n\r\n' + pc_raw_data + '\r\n```\r\n')
self.dut.write('heap')
heap_size = self.dut.expect(re.compile(r'min heap size: (\d+)\D'))[0]
# return server raw data (for parsing test results) and RSSI
return server_raw_data, rssi, heap_size
def run_test(self, proto, direction, atten_val, bw_limit): # type: (str, str, int, int) -> None
"""
run test for one type, with specified atten_value and save the test result
:param proto: tcp or udp
:param direction: tx or rx
:param atten_val: attenuate value
"""
rssi = FAILED_TO_SCAN_RSSI
heap_size = INVALID_HEAP_SIZE
try:
server_raw_data, rssi, heap_size = self._test_once(proto, direction, bw_limit)
throughput = self._save_test_result('{}_{}'.format(proto, direction),
server_raw_data, atten_val,
rssi, heap_size)
Utility.console_log('[{}][{}_{}][{}][{}]: {:.02f}'
.format(self.config_name, proto, direction, rssi, self.ap_ssid, throughput))
self.lowest_rssi_scanned = min(self.lowest_rssi_scanned, rssi)
except (ValueError, IndexError):
self._save_test_result('{}_{}'.format(proto, direction), '', atten_val, rssi, heap_size)
Utility.console_log('Fail to get throughput results.')
except AssertionError:
self.fail_to_scan += 1
Utility.console_log('Fail to scan AP.')
def run_all_cases(self, atten_val, bw_limit): # type: (int, int) -> None
"""
run test for all types (udp_tx, udp_rx, tcp_tx, tcp_rx).
:param atten_val: attenuate value
"""
self.run_test('tcp', 'tx', atten_val, bw_limit)
self.run_test('tcp', 'rx', atten_val, bw_limit)
self.run_test('udp', 'tx', atten_val, bw_limit)
self.run_test('udp', 'rx', atten_val, bw_limit)
if self.fail_to_scan > 10:
Utility.console_log(
'Fail to scan AP for more than 10 times. Lowest RSSI scanned is {}'.format(self.lowest_rssi_scanned))
raise AssertionError
def wait_ap_power_on(self): # type: (Any) -> bool
"""
AP need to take sometime to power on. It changes for different APs.
This method will scan to check if the AP powers on.
:return: True or False
"""
self.dut.write('restart')
self.dut.expect_any('iperf>', 'esp32>')
for _ in range(WAIT_AP_POWER_ON_TIMEOUT // SCAN_TIMEOUT):
try:
self.dut.write('scan {}'.format(self.ap_ssid))
self.dut.expect(re.compile(r'\[{}]\[rssi=(-\d+)]'.format(self.ap_ssid)),
timeout=SCAN_TIMEOUT)
ret = True
break
except DUT.ExpectTimeout:
pass
else:
ret = False
return ret