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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
from math import ceil
from statistics import mean
from past.utils import old_div
from rapid_log import RapidLog
from rapid_log import bcolors
from rapid_test import RapidTest
inf = float("inf")
class FlowSizeTest(RapidTest):
"""
Class to manage the flowsizetesting
"""
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
if self.test['test'] == 'TST009test':
# This test implements some of the testing as defined in
# https://docbox.etsi.org/ISG/NFV/open/Publications_pdf/Specs-Reports/NFV-TST%20009v3.2.1%20-%20GS%20-%20NFVI_Benchmarks.pdf
self.test['TST009_n'] = int(ceil(old_div(
self.test['maxframespersecondallingress'],
self.test['stepsize'])))
self.test['TST009'] = True
self.test['TST009_L'] = 0
self.test['TST009_R'] = self.test['TST009_n'] - 1
self.test['TST009_S']= []
for m in range(0, self.test['TST009_n']):
self.test['TST009_S'].append((m+1) * self.test['stepsize'])
elif self.test['test'] == 'fixed_rate':
for key in['drop_rate_threshold','lat_avg_threshold',
'lat_perc_threshold','lat_max_threshold']:
self.test[key] = inf
def new_speed(self, speed,size,success):
if self.test['test'] == 'fixed_rate':
return (self.test['startspeed'])
elif self.test['test'] == 'increment_till_fail':
return (speed + self.test['step'])
elif 'TST009' in self.test.keys():
if success:
self.test['TST009_L'] = self.test['TST009_m'] + 1
else:
self.test['TST009_R'] = max(self.test['TST009_m'] - 1, self.test['TST009_L'])
self.test['TST009_m'] = int (old_div((self.test['TST009_L'] + self.test['TST009_R']),2))
return (self.get_percentageof10Gbps(self.test['TST009_S'][self.test['TST009_m']],size))
else:
if success:
self.test['minspeed'] = speed
else:
self.test['maxspeed'] = speed
return (old_div((self.test['minspeed'] + self.test['maxspeed']),2.0))
def get_start_speed_and_init(self, size):
if self.test['test'] == 'fixed_rate':
return (self.test['startspeed'])
elif self.test['test'] == 'increment_till_fail':
return (self.test['startspeed'])
elif 'TST009' in self.test.keys():
self.test['TST009_L'] = 0
self.test['TST009_R'] = self.test['TST009_n'] - 1
self.test['TST009_m'] = int(old_div((self.test['TST009_L'] + self.test['TST009_R']), 2))
return (self.get_percentageof10Gbps(self.test['TST009_S'][self.test['TST009_m']],size))
else:
self.test['minspeed'] = 0
self.test['maxspeed'] = self.test['startspeed']
return (self.test['startspeed'])
def resolution_achieved(self):
if self.test['test'] == 'fixed_rate':
return (True)
elif 'TST009' in self.test.keys():
return (self.test['TST009_L'] == self.test['TST009_R'])
else:
return ((self.test['maxspeed'] - self.test['minspeed']) <= self.test['accuracy'])
def run(self):
result_details = {'Details': 'Nothing'}
self.gen_machine.start_latency_cores()
TestPassed = True
for imix in self.test['imixs']:
size = mean(imix)
self.gen_machine.set_udp_packet_size(imix)
if self.background_machines:
backgroundinfo = '{}Running {} x background traffic not represented in the table{}'.format(bcolors.FLASH,len(self.background_machines),bcolors.ENDC)
else:
backgroundinfo = '{}{}'.format(bcolors.FLASH,bcolors.ENDC)
self.set_background_size(self.background_machines, imix)
RapidLog.info("+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+")
RapidLog.info('| UDP, {:>5} bytes, different number of flows by randomizing SRC & DST UDP port. {:116.116}|'.format(size, backgroundinfo))
RapidLog.info("+--------+------------------+-------------+-------------+-------------+------------------------+----------+----------+----------+-----------+-----------+-----------+-----------+-------+----+")
RapidLog.info('| Flows | 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("+--------+------------------+-------------+-------------+-------------+------------------------+----------+----------+----------+-----------+-----------+-----------+-----------+-------+----+")
for flow_number in self.test['flows']:
attempts = 0
self.gen_machine.reset_stats()
if self.sut_machine:
self.sut_machine.reset_stats()
flow_number = self.gen_machine.set_flows(flow_number)
self.set_background_flows(self.background_machines, flow_number)
endspeed = None
speed = self.get_start_speed_and_init(size)
self.record_start_time()
while True:
attempts += 1
endwarning = False
print(str(flow_number)+' flows: Measurement ongoing at speed: ' + str(round(speed,2)) + '% ',end='\r')
sys.stdout.flush()
# Start generating packets at requested speed (in % of a 10Gb/s link)
self.gen_machine.set_generator_speed(speed)
self.set_background_speed(self.background_machines, speed)
self.start_background_traffic(self.background_machines)
# Get statistics now that the generation is stable and initial ARP messages are dealt with
pps_req_tx,pps_tx,pps_sut_tx,pps_rx,lat_avg,lat_perc , lat_perc_max, lat_max, abs_tx,abs_rx,abs_dropped, abs_tx_fail, drop_rate, lat_min, lat_used, r, actual_duration, avg_bg_rate, bucket_size, buckets = self.run_iteration(float(self.test['runtime']),flow_number,size,speed)
self.stop_background_traffic(self.background_machines)
if r > 1:
retry_warning = bcolors.WARNING + ' {:1} retries needed'.format(r) + bcolors.ENDC
else:
retry_warning = ''
# 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 (drop_rate + lat_used * 100) < 95:
lat_warning = bcolors.WARNING + ' Latency accuracy issue?: {:>3.0f}%'.format(lat_used*100) + bcolors.ENDC
else:
lat_warning = ''
if self.test['test'] == 'fixed_rate':
endspeed = speed
endpps_req_tx = None
endpps_tx = None
endpps_sut_tx = None
endpps_rx = None
endlat_avg = lat_avg
endlat_perc = lat_perc
endlat_perc_max = lat_perc_max
endlat_max = lat_max
endbuckets = buckets
endabs_dropped = abs_dropped
enddrop_rate = drop_rate
endabs_tx = abs_tx
endabs_rx = abs_rx
endavg_bg_rate = avg_bg_rate
if lat_warning or retry_warning:
endwarning = '| | {:177.177} |'.format(retry_warning + lat_warning)
success = True
TestPassed = False # fixed rate testing cannot be True, it is just reporting numbers every second
speed_prefix = lat_avg_prefix = lat_perc_prefix = lat_max_prefix = abs_drop_rate_prefix = drop_rate_prefix = bcolors.ENDC
# The following if statement is testing if we pass the success criteria of a certain drop rate, average latency and maximum latency below the threshold
# The drop rate success can be achieved in 2 ways: either the drop rate is below a treshold, either we want that no packet has been lost during the test
# This can be specified by putting 0 in the .test file
elif ((drop_rate < self.test['drop_rate_threshold']) or (abs_dropped==self.test['drop_rate_threshold']==0)) and (lat_avg< self.test['lat_avg_threshold']) and (lat_perc< self.test['lat_perc_threshold']) and (lat_max < self.test['lat_max_threshold']):
if (old_div((self.get_pps(speed,size) - pps_tx),self.get_pps(speed,size)))>0.01:
speed_prefix = bcolors.WARNING
if abs_tx_fail > 0:
gen_warning = bcolors.WARNING + ' Network limit?: requesting {:<.3f} Mpps and getting {:<.3f} Mpps - {} failed to be transmitted'.format(self.get_pps(speed,size), pps_tx, abs_tx_fail) + bcolors.ENDC
else:
gen_warning = bcolors.WARNING + ' Generator limit?: requesting {:<.3f} Mpps and getting {:<.3f} Mpps'.format(self.get_pps(speed,size), pps_tx) + bcolors.ENDC
else:
speed_prefix = bcolors.ENDC
gen_warning = ''
endspeed = speed
endspeed_prefix = speed_prefix
endpps_req_tx = pps_req_tx
endpps_tx = pps_tx
endpps_sut_tx = pps_sut_tx
endpps_rx = pps_rx
endlat_avg = lat_avg
endlat_perc = lat_perc
endlat_perc_max = lat_perc_max
endlat_max = lat_max
endbuckets = buckets
endabs_dropped = None
enddrop_rate = drop_rate
endabs_tx = abs_tx
endabs_rx = abs_rx
endavg_bg_rate = avg_bg_rate
if lat_warning or gen_warning or retry_warning:
endwarning = '| | {:186.186} |'.format(retry_warning + lat_warning + gen_warning)
success = True
success_message=' SUCCESS'
speed_prefix = lat_avg_prefix = lat_perc_prefix = lat_max_prefix = abs_drop_rate_prefix = drop_rate_prefix = bcolors.ENDC
RapidLog.debug(self.report_result(-attempts,size,speed,pps_req_tx,pps_tx,pps_sut_tx,pps_rx,lat_avg,lat_perc,lat_perc_max,lat_max,abs_tx,abs_rx,abs_dropped,actual_duration,speed_prefix,lat_avg_prefix,lat_max_prefix,abs_drop_rate_prefix,drop_rate_prefix)+ success_message + retry_warning + lat_warning + gen_warning)
else:
success_message=' FAILED'
abs_drop_rate_prefix = bcolors.ENDC
if ((abs_dropped>0) and (self.test['drop_rate_threshold'] ==0)):
abs_drop_rate_prefix = bcolors.FAIL
if (drop_rate < self.test['drop_rate_threshold']):
drop_rate_prefix = bcolors.ENDC
else:
drop_rate_prefix = bcolors.FAIL
if (lat_avg< self.test['lat_avg_threshold']):
lat_avg_prefix = bcolors.ENDC
else:
lat_avg_prefix = bcolors.FAIL
if (lat_perc< self.test['lat_perc_threshold']):
lat_perc_prefix = bcolors.ENDC
else:
lat_perc_prefix = bcolors.FAIL
if (lat_max< self.test['lat_max_threshold']):
lat_max_prefix = bcolors.ENDC
else:
lat_max_prefix = bcolors.FAIL
if ((old_div((self.get_pps(speed,size) - pps_tx),self.get_pps(speed,size)))<0.001):
speed_prefix = bcolors.ENDC
else:
speed_prefix = bcolors.FAIL
success = False
RapidLog.debug(self.report_result(-attempts,size,speed,pps_req_tx,pps_tx,pps_sut_tx,pps_rx,lat_avg,lat_perc,lat_perc_max,lat_max,abs_tx,abs_rx,abs_dropped,actual_duration,speed_prefix,lat_avg_prefix,lat_perc_prefix,lat_max_prefix,abs_drop_rate_prefix,drop_rate_prefix)+ success_message + retry_warning + lat_warning)
speed = self.new_speed(speed, size, success)
if self.test['test'] == 'increment_till_fail':
if not success:
break
elif self.resolution_achieved():
break
self.record_stop_time()
if endspeed is not None:
if TestPassed and (endpps_rx < self.test['pass_threshold']):
TestPassed = False
speed_prefix = lat_avg_prefix = lat_perc_prefix = lat_max_prefix = abs_drop_rate_prefix = drop_rate_prefix = bcolors.ENDC
RapidLog.info(self.report_result(flow_number,size,endspeed,endpps_req_tx,endpps_tx,endpps_sut_tx,endpps_rx,endlat_avg,endlat_perc,endlat_perc_max,endlat_max,endabs_tx,endabs_rx,endabs_dropped,actual_duration,speed_prefix,lat_avg_prefix,lat_perc_prefix,lat_max_prefix,abs_drop_rate_prefix,drop_rate_prefix))
if endavg_bg_rate:
tot_avg_rx_rate = endpps_rx + (endavg_bg_rate * len(self.background_machines))
endtotaltrafficrate = '| | Total amount of traffic received by all generators during this test: {:>4.3f} Gb/s {:7.3f} Mpps {} |'.format(RapidTest.get_speed(tot_avg_rx_rate,size) , tot_avg_rx_rate, ' '*84)
RapidLog.info (endtotaltrafficrate)
if endwarning:
RapidLog.info (endwarning)
RapidLog.info("+--------+------------------+-------------+-------------+-------------+------------------------+----------+----------+----------+-----------+-----------+-----------+-----------+-------+----+")
if self.test['test'] != 'fixed_rate':
result_details = {'test': self.test['testname'],
'environment_file': self.test['environment_file'],
'start_date': self.start,
'stop_date': self.stop,
'Flows': flow_number,
'Size': size,
'RequestedSpeed': RapidTest.get_pps(endspeed,size),
'CoreGenerated': endpps_req_tx,
'SentByNIC': endpps_tx,
'FwdBySUT': endpps_sut_tx,
'RevByCore': endpps_rx,
'AvgLatency': endlat_avg,
'PCTLatency': endlat_perc,
'MaxLatency': endlat_max,
'PacketsSent': endabs_tx,
'PacketsReceived': endabs_rx,
'PacketsLost': endabs_dropped,
'bucket_size': bucket_size,
'buckets': endbuckets}
self.post_data('rapid_flowsizetest', result_details)
else:
RapidLog.info('|{:>7}'.format(str(flow_number))+" | Speed 0 or close to 0")
self.gen_machine.stop_latency_cores()
return (TestPassed,result_details)
|
