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