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#!/usr/bin/python
##
## Copyright (c) 2020 Intel Corporation
##
## Licensed under the Apache License, Version 2.0 (the "License");
## you may not use this file except in compliance with the License.
## You may obtain a copy of the License at
##
##
## http://www.apache.org/licenses/LICENSE-2.0
##
## Unless required by applicable law or agreed to in writing, software
## distributed under the License is distributed on an "AS IS" BASIS,
## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
## See the License for the specific language governing permissions and
## limitations under the License.
##
import sys
import time
import requests
from rapid_log import RapidLog
from rapid_log import bcolors
from rapid_test import RapidTest
from statistics import mean
class ImpairTest(RapidTest):
"""
Class to manage the impair testing
"""
def __init__(self, test_param, lat_percentile, runtime, testname,
environment_file, gen_machine, sut_machine, background_machines):
super().__init__(test_param, runtime, testname, environment_file)
self.gen_machine = gen_machine
self.sut_machine = sut_machine
self.background_machines = background_machines
self.test['lat_percentile'] = lat_percentile
def run(self):
result_details = {'Details': 'Nothing'}
imix = self.test['imix']
size = mean (imix)
flow_number = self.test['flowsize']
attempts = self.test['steps']
self.gen_machine.set_udp_packet_size(imix)
flow_number = self.gen_machine.set_flows(flow_number)
self.gen_machine.start_latency_cores()
RapidLog.info('+' + '-' * 188 + '+')
RapidLog.info(("| Generator is sending UDP ({:>5} flow) packets ({:>5}"
" bytes) to SUT via GW dropping and delaying packets. SUT sends "
"packets back.{:>60}").format(flow_number,round(size),'|'))
RapidLog.info('+' + '-' * 8 + '+' + '-' * 18 + '+' + '-' * 13 +
'+' + '-' * 13 + '+' + '-' * 13 + '+' + '-' * 24 + '+' +
'-' * 10 + '+' + '-' * 10 + '+' + '-' * 10 + '+' + '-' * 11
+ '+' + '-' * 11 + '+' + '-' * 11 + '+' + '-' * 11 + '+'
+ '-' * 7 + '+' + '-' * 4 + '+')
RapidLog.info(('| Test | Speed requested | Gen by core | Sent by NIC'
' | Fwrd by SUT | Rec. by core | Avg. Lat.|{:.0f} Pcentil'
'| Max. Lat.| Sent | Received | Lost | Total Lost|'
'L.Ratio|Time|').format(self.test['lat_percentile']*100))
RapidLog.info('+' + '-' * 8 + '+' + '-' * 18 + '+' + '-' * 13 +
'+' + '-' * 13 + '+' + '-' * 13 + '+' + '-' * 24 + '+' +
'-' * 10 + '+' + '-' * 10 + '+' + '-' * 10 + '+' + '-' * 11
+ '+' + '-' * 11 + '+' + '-' * 11 + '+' + '-' * 11 + '+'
+ '-' * 7 + '+' + '-' * 4 + '+')
speed = self.test['startspeed']
self.gen_machine.set_generator_speed(speed)
while attempts:
attempts -= 1
print('Measurement ongoing at speed: ' + str(round(speed,2)) + '% ',end='\r')
sys.stdout.flush()
time.sleep(1)
# Get statistics now that the generation is stable and NO ARP messages any more
iteration_data = self.run_iteration(float(self.test['runtime']),flow_number,size,speed)
iteration_data['speed'] = speed
# Drop rate is expressed in percentage. lat_used is a ratio (0 to 1). The sum of these 2 should be 100%.
# If the sum is lower than 95, it means that more than 5% of the latency measurements where dropped for accuracy reasons.
if (iteration_data['drop_rate'] +
iteration_data['lat_used'] * 100) < 95:
lat_warning = ('{} Latency accuracy issue?: {:>3.0f}%'
'{}').format(bcolors.WARNING,
iteration_data['lat_used']*100, bcolors.ENDC)
else:
lat_warning = ''
iteration_prefix = {'speed' : '',
'lat_avg' : '',
'lat_perc' : '',
'lat_max' : '',
'abs_drop_rate' : '',
'drop_rate' : ''}
RapidLog.info(self.report_result(attempts, size, iteration_data,
iteration_prefix))
iteration_data['test'] = self.test['testname']
iteration_data['environment_file'] = self.test['environment_file']
iteration_data['Flows'] = flow_number
iteration_data['Size'] = size
iteration_data['RequestedSpeed'] = RapidTest.get_pps(
iteration_data['speed'] ,size)
result_details = self.post_data(iteration_data)
RapidLog.debug(result_details)
RapidLog.info('+' + '-' * 8 + '+' + '-' * 18 + '+' + '-' * 13 +
'+' + '-' * 13 + '+' + '-' * 13 + '+' + '-' * 24 + '+' +
'-' * 10 + '+' + '-' * 10 + '+' + '-' * 10 + '+' + '-' * 11
+ '+' + '-' * 11 + '+' + '-' * 11 + '+' + '-' * 11 + '+'
+ '-' * 7 + '+' + '-' * 4 + '+')
self.gen_machine.stop_latency_cores()
return (True, result_details)
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