path: root/VNFs/DPPD-PROX/helper-scripts/openstackrapid/runrapid.py

#!/usr/bin/python

##
## Copyright (c) 2010-2017 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.
##

from __future__ import print_function

import os
import stat
import sys
import time
import subprocess
import getopt
import re
import logging
from logging.handlers import RotatingFileHandler
from logging import handlers
from prox_ctrl import prox_ctrl
import ConfigParser
import ast

version="18.3.27"
env = "rapid" #Default string for environment
test = "basicrapid" #Default string for test
loglevel="DEBUG" # sets log level for writing to file
runtime=10 # time in seconds for 1 test run
configonly = False # IF True, the system will upload all the necessary config fiels to the VMs, but not start PROX and the actual testing

def usage():
	print("usage: runrapid    [--version] [-v]")
	print("                   [--env ENVIRONMENT_NAME]")
	print("                   [--test TEST_NAME]")
	print("                   [--runtime TIME_FOR_TEST]")
	print("                   [--configonly False|True]")
	print("                   [--log DEBUG|INFO|WARNING|ERROR|CRITICAL]")
	print("                   [-h] [--help]")
	print("")
	print("Command-line interface to runrapid")
	print("")
	print("optional arguments:")
	print("  -v,  --version           	Show program's version number and exit")
	print("  --env ENVIRONMENT_NAME       	Parameters will be read from ENVIRONMENT_NAME.env Default is %s."%env)
	print("  --test TEST_NAME       	Test cases will be read from TEST_NAME.test Default is %s."%test)
	print("  --runtime			Specify time in seconds for 1 test run")
	print("  --configonly			If True, only upload all config files to the VMs, do not run the tests. Default is %s."%configonly)
	print("  --log				Specify logging level for log file output, screen output level is hard coded")
	print("  -h, --help               	Show help message and exit.")
	print("")

try:
	opts, args = getopt.getopt(sys.argv[1:], "vh", ["version","help", "env=", "test=","runtime=","configonly=","log="])
except getopt.GetoptError as err:
	print("===========================================")
	print(str(err))
	print("===========================================")
	usage()
	sys.exit(2)
if args:
	usage()
	sys.exit(2)
for opt, arg in opts:
	if opt in ("-h", "--help"):
		usage()
		sys.exit()
	if opt in ("-v", "--version"):
		print("Rapid Automated Performance Indication for Dataplane "+version)
		sys.exit()
	if opt in ("--env"):
		env = arg
		print ("Using '"+env+"' as name for the environment")
	if opt in ("--test"):
		test = arg
		print ("Using '"+test+".test' for test case definition")
	if opt in ("--runtime"):
		runtime = arg
		print ("Runtime: "+ runtime)
	if opt in ("--configonly"):
		configonly = arg
		print ("configonly: "+ configonly)
	if opt in ("--log"):
		loglevel = arg
		print ("Log level: "+ loglevel)


# create formatters
screen_formatter = logging.Formatter("%(message)s")
file_formatter = logging.Formatter("%(asctime)s - %(levelname)s - %(message)s")

# get a top-level logger,
# set its log level,
# BUT PREVENT IT from propagating messages to the root logger
#
log = logging.getLogger()
numeric_level = getattr(logging, loglevel.upper(), None)
if not isinstance(numeric_level, int):
    raise ValueError('Invalid log level: %s' % loglevel)
log.setLevel(numeric_level)
log.propagate = 0

# create a console handler
# and set its log level to the command-line option 
# 
console_handler = logging.StreamHandler(sys.stdout)
console_handler.setLevel(logging.INFO)
console_handler.setFormatter(screen_formatter)

# create a file handler
# and set its log level to DEBUG
#
log_file = 'RUN' +env+'.'+test+'.log'
file_handler = logging.handlers.RotatingFileHandler(log_file, backupCount=10)
#file_handler = log.handlers.TimedRotatingFileHandler(log_file, 'D', 1, 5)
file_handler.setLevel(numeric_level)
file_handler.setFormatter(file_formatter)

# add handlers to the logger
#
log.addHandler(file_handler)
log.addHandler(console_handler)

# Check if log exists and should therefore be rolled
needRoll = os.path.isfile(log_file)


# This is a stale log, so roll it
if needRoll:    
    # Add timestamp
    log.debug('\n---------\nLog closed on %s.\n---------\n' % time.asctime())

    # Roll over on application start
    log.handlers[0].doRollover()

# Add timestamp
log.debug('\n---------\nLog started on %s.\n---------\n' % time.asctime())

log.debug("runrapid.py version: "+version)
#========================================================================
def connect_socket(client):
	attempts = 1
	log.debug("Trying to connect to PROX (just launched) on %s, attempt: %d" % (client.ip(), attempts))
	sock = None
	while True:
		sock = client.prox_sock()
		if sock is not None:
			break
		attempts += 1
		if attempts > 20:
			log.exception("Failed to connect to PROX on %s after %d attempts" % (client.ip(), attempts))
			raise Exception("Failed to connect to PROX on %s after %d attempts" % (client.ip(), attempts))
		time.sleep(2)
		log.debug("Trying to connect to PROX (just launched) on %s, attempt: %d" % (client.ip(), attempts))
	log.info("Connected to PROX on %s" % client.ip())
	return sock

def connect_client(client):
	attempts = 1
	log.debug("Trying to connect to VM which was just launched on %s, attempt: %d" % (client.ip(), attempts))
	while True:
		try:
			client.connect()
			break
		except RuntimeWarning, ex:
			attempts += 1
			if attempts > 20:
				log.exception("Failed to connect to VM after %d attempts:\n%s" % (attempts, ex))
				raise Exception("Failed to connect to VM after %d attempts:\n%s" % (attempts, ex))
			time.sleep(2)
			log.debug("Trying to connect to VM which was just launched on %s, attempt: %d" % (client.ip(), attempts))
	log.debug("Connected to VM on %s" % client.ip())

def run_iteration(gensock,sutsock):
	sleep_time = 2
	# Sleep_time is needed to be able to do accurate measurements to check for packet loss. We need to make this time large enough so that we do not take the first measurement while some packets from the previous tests migth still be in flight
	time.sleep(sleep_time)
	abs_old_rx, abs_old_tx, abs_old_drop, abs_old_tsc, abs_tsc_hz = gensock.core_stats(genstatcores)
	gensock.start(gencores)
	time.sleep(sleep_time)
	if sutsock!='none':
		old_sut_rx, old_sut_tx, old_sut_drop, old_sut_tsc, sut_tsc_hz = sutsock.core_stats(sutstatcores)
	old_rx, old_tx, old_drop, old_tsc, tsc_hz = gensock.core_stats(genstatcores)
	time.sleep(float(runtime))
	lat_min, lat_max, lat_avg = gensock.lat_stats(latcores)
	# Get statistics after some execution time
	new_rx, new_tx, new_drop, new_tsc, tsc_hz = gensock.core_stats(genstatcores)
	if sutsock!='none':
		new_sut_rx, new_sut_tx, new_sut_drop, new_sut_tsc, sut_tsc_hz = sutsock.core_stats(sutstatcores)
	#Stop generating
	gensock.stop(gencores)
	time.sleep(sleep_time)
	abs_new_rx, abs_new_tx, abs_new_drop, abs_new_tsc, abs_tsc_hz = gensock.core_stats(genstatcores)
	drop = new_drop-old_drop # drop is all packets dropped by all tasks. This includes packets dropped at the generator task + packets dropped by the nop task. In steady state, this equals to the number of packets received by this VM
	rx = new_rx - old_rx     # rx is all packets received by the nop task = all packets received in the gen VM
	tx = new_tx - old_tx     # tx is all generated packets actually accepted by the interface
	abs_dropped = (abs_new_tx - abs_old_tx) - (abs_new_rx - abs_old_rx)
	tsc = new_tsc - old_tsc  # time difference between the 2 measurements, expressed in cycles.
	pps_req_tx = (tx+drop-rx)*tsc_hz*1.0/(tsc*1000000)
	pps_tx = tx*tsc_hz*1.0/(tsc*1000000)
	pps_rx = rx*tsc_hz*1.0/(tsc*1000000)
	if sutsock!='none':
		sut_rx = new_sut_rx - old_sut_rx
		sut_tx = new_sut_tx - old_sut_tx
		sut_tsc = new_sut_tsc - old_sut_tsc
		pps_sut_tx = sut_tx*sut_tsc_hz*1.0/(sut_tsc*1000000)
		pps_sut_tx_str = '{:>9.3f}'.format(pps_sut_tx)
	else:
		pps_sut_tx = 0
		pps_sut_tx_str = 'NO MEAS.'
	if (tx == 0):
        	log.critical("TX = 0. Test interrupted since no packet has been sent.")
		raise Exception("TX = 0")
	return(pps_req_tx,pps_tx,pps_sut_tx_str,pps_rx,lat_avg,lat_max,abs_dropped,(abs_new_tx - abs_old_tx))

def new_speed(speed,minspeed,maxspeed,success):
	# Following calculates the ratio for the new speed to be applied
	# On the Y axis, we will find the ratio, a number between 0 and 1
	# On the x axis, we find the % of dropped packets, a number between 0 and 100
	# 2 lines are drawn and we take the minumun of these lines to calculate the ratio
	# One line goes through (0,y0) and (p,q)
	# The second line goes through (p,q) and (100,y100)
#	y0=0.99
#	y100=0.1
#	p=1
#	q=.99
#	ratio = min((q-y0)/p*drop_rate+y0,(q-y100)/(p-100)*drop_rate+q-p*(q-y100)/(p-100))
#	return (int(speed*ratio*100)+0.5)/100.0
	if success:
		minspeed = speed
	else:
		maxspeed = speed
	newspeed = (maxspeed+minspeed)/2.0
	return (newspeed,minspeed,maxspeed)

def get_pps(speed,size):
	return (speed * 100.0 / (8*(size+24)))

def run_speedtest(gensock,sutsock):
        log.info("+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+")
        log.info("| Generator is sending UDP (1 flow) packets (64 bytes) to SUT. SUT sends packets back                                                                                          |")
	log.info("+--------+--------------------+----------------+----------------+----------------+----------------+----------------+----------------+----------------+------------+------------+")
	log.info("| Test   |  Speed requested   | Sent to NIC    |  Sent by Gen   | Forward by SUT |  Rec. by Gen   |  Avg. Latency  |  Max. Latency  |  Packets Lost  | Loss Ratio | Result     |")
	log.info("+--------+--------------------+----------------+----------------+----------------+----------------+----------------+----------------+----------------+------------+------------+")
	maxspeed = speed = 100
	minspeed = 0
	size=60
	attempts = 0
	endpps_sut_tx_str = 'NO_RESULTS'
	gensock.set_size(gencores,0,size) # This is setting the frame size
	gensock.set_value(gencores,0,16,(size-14),2) # 18 is the difference between the frame size and IP size = size of (MAC addresses, ethertype and FCS)
	gensock.set_value(gencores,0,38,(size-34),2) # 38 is the difference between the frame size and UDP size = 18 + size of IP header (=20)
	# This will only work when using sending UDP packets. For different protocls and ehternet types, we would need a differnt calculation
        while (maxspeed-minspeed > ACCURACY):
                attempts += 1
                print('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)
                gensock.speed(speed, gencores)
                time.sleep(1)
                # Get statistics now that the generation is stable and NO ARP messages any more
		pps_req_tx,pps_tx,pps_sut_tx_str,pps_rx,lat_avg,lat_max, abs_dropped, abs_tx = run_iteration(gensock,sutsock)
		drop_rate = 100.0*abs_dropped/abs_tx
        	if ((get_pps(speed,size) - pps_tx)/get_pps(speed,size))<0.001 and ((drop_rate < DROP_RATE_TRESHOLD) or (abs_dropped==DROP_RATE_TRESHOLD ==0)):
	                log.info('|{:>7}'.format(str(attempts))+" | " + '{:>5.1f}'.format(speed) + '% ' +'{:>6.3f}'.format(get_pps(speed,size)) + ' Mpps | '+ '{:>9.3f}'.format(pps_req_tx)+' Mpps | '+ '{:>9.3f}'.format(pps_tx) +' Mpps | ' + '{:>9}'.format(pps_sut_tx_str) +' Mpps | '+ '{:>9.3f}'.format(pps_rx)+' Mpps | '+ '{:>9.0f}'.format(lat_avg)+' us   | '+  '{:>9.0f}'.format(lat_max)+' us   | '+ '{:>14d}'.format(abs_dropped)+ ' |''{:>9.2f}'.format(drop_rate)+ '%  | SUCCESS    |')
			endspeed = speed
			endpps_req_tx = pps_req_tx
			endpps_tx = pps_tx
			endpps_sut_tx_str = pps_sut_tx_str
			endpps_rx = pps_rx
			endlat_avg = lat_avg
			endlat_max = lat_max
			endabs_dropped = abs_dropped
			enddrop_rate = drop_rate
			success = True 
	        else:
	                log.info('|{:>7}'.format(str(attempts))+" | " + '{:>5.1f}'.format(speed) + '% ' +'{:>6.3f}'.format(get_pps(speed,size)) + ' Mpps | '+ '{:>9.3f}'.format(pps_req_tx)+' Mpps | '+ '{:>9.3f}'.format(pps_tx) +' Mpps | ' + '{:>9}'.format(pps_sut_tx_str) +' Mpps | '+ '{:>9.3f}'.format(pps_rx)+' Mpps | '+ '{:>9.0f}'.format(lat_avg)+' us   | '+ '{:>9.0f}'.format(lat_max)+' us   | '+ '{:>14d}'.format(abs_dropped)+ ' |''{:>9.2f}'.format(drop_rate)+ '%  | FAILED     |')
			success = False 
		speed,minspeed,maxspeed = new_speed(speed,minspeed,maxspeed,success)
	if endpps_sut_tx_str <>  'NO_RESULTS':
		log.info("+--------+--------------------+----------------+----------------+----------------+----------------+----------------+----------------+----------------+------------+------------+")
                log.info('|{:>7}'.format('END')+" | " + '{:>5.1f}'.format(endspeed) + '% ' +'{:>6.3f}'.format(get_pps(endspeed,size)) + ' Mpps | '+ '{:>9.3f}'.format(endpps_req_tx)+' Mpps | '+ '{:>9.3f}'.format(endpps_tx) +' Mpps | ' + '{:>9}'.format(endpps_sut_tx_str) +' Mpps | '+ '{:>9.3f}'.format(endpps_rx)+' Mpps | '+ '{:>9.0f}'.format(endlat_avg)+' us   | '+ '{:>9.0f}'.format(endlat_max)+' us   | '+'{:>14d}'.format(endabs_dropped)+ ' |''{:>9.2f}'.format(enddrop_rate)+ '%  | SUCCESS    |')
		log.info("+--------+--------------------+----------------+----------------+----------------+----------------+----------------+----------------+----------------+------------+------------+")
	else:
		log.info('| Speed 0 or close to 0')

def run_flowtest(gensock,sutsock):
	log.info("+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+")
	log.info("| UDP, 64 bytes, different number of flows by randomizing SRC & DST UDP port                                                                                      |")
	log.info("+--------+--------------------+----------------+----------------+----------------+----------------+----------------+----------------+----------------+------------+")
	log.info("| Flows  |  Speed requested   | Sent to NIC    |  Sent by Gen   | Forward by SUT |  Rec. by Gen   |  Avg. Latency  |  Max. Latency  |  Packets Lost  | Loss Ratio |")
	log.info("+--------+--------------------+----------------+----------------+----------------+----------------+----------------+----------------+----------------+------------+")
	size=60
	# To generate a desired number of flows, PROX will randomize the bits in source and destination ports, as specified by the bit masks in the flows variable. 
	flows={128:['1000000000000XXX','100000000000XXXX'],1024:['10000000000XXXXX','10000000000XXXXX'],8192:['1000000000XXXXXX','100000000XXXXXXX'],65535:['10000000XXXXXXXX','10000000XXXXXXXX'],524280:['1000000XXXXXXXXX','100000XXXXXXXXXX']}
#	flows={524280:['1000000XXXXXXXXX','100000XXXXXXXXXX']}
	gensock.set_size(gencores,0,size) # This is setting the frame size
	gensock.set_value(gencores,0,16,(size-14),2) # 18 is the difference between the frame size and IP size = size of (MAC addresses, ethertype and FCS)
	gensock.set_value(gencores,0,38,(size-34),2) # 38 is the difference between the frame size and UDP size = 18 + size of IP header (=20)
	# This will only work when using sending UDP packets. For different protocls and ehternet types, we would need a differnt calculation
	for flow_number in sorted(flows.iterkeys()):
		#speed = 100 Commented out: Not starting from 100% since we are trying more flows, so speed will not be higher than the speed achieved in previous loop
		gensock.reset_stats()
		if sutsock!='none':
			sutsock.reset_stats()
		source_port,destination_port = flows[flow_number]
		gensock.set_random(gencores,0,34,source_port,2)
		gensock.set_random(gencores,0,36,destination_port,2)
		endpps_sut_tx_str = 'NO_RESULTS'
		maxspeed = speed = 100
		minspeed = 0
		while (maxspeed-minspeed > ACCURACY):
			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)
			gensock.speed(speed, gencores)
			time.sleep(1)
			# Get statistics now that the generation is stable and NO ARP messages any more
			pps_req_tx,pps_tx,pps_sut_tx_str,pps_rx,lat_avg,lat_max, abs_dropped, abs_tx = run_iteration(gensock,sutsock)
			drop_rate = 100.0*abs_dropped/abs_tx
	        	if ((get_pps(speed,size) - pps_tx)/get_pps(speed,size))<0.001 and ((drop_rate < DROP_RATE_TRESHOLD) or (abs_dropped==DROP_RATE_TRESHOLD ==0)):
				endspeed = speed
				endpps_req_tx = pps_req_tx
				endpps_tx = pps_tx
				endpps_sut_tx_str = pps_sut_tx_str
				endpps_rx = pps_rx
				endlat_avg = lat_avg 
				endlat_max = lat_max 
				endabs_dropped = abs_dropped
				enddrop_rate = drop_rate
				success = True
			else:
				success = False 
			speed,minspeed,maxspeed = new_speed(speed,minspeed,maxspeed,success)
		if endpps_sut_tx_str <>  'NO_RESULTS':
                	log.info('|{:>7}'.format(str(flow_number))+" | " + '{:>5.1f}'.format(endspeed) + '% ' +'{:>6.3f}'.format(get_pps(endspeed,size)) + ' Mpps | '+ '{:>9.3f}'.format(endpps_req_tx)+' Mpps | '+ '{:>9.3f}'.format(endpps_tx) +' Mpps | ' + '{:>9}'.format(endpps_sut_tx_str) +' Mpps | '+ '{:>9.3f}'.format(endpps_rx)+' Mpps | '+ '{:>9.0f}'.format(endlat_avg)+' us   | '+ '{:>9.0f}'.format(endlat_max)+' us   | '+ '{:>14d}'.format(endabs_dropped)+ ' |'+'{:>9.2f}'.format(enddrop_rate)+ '%  |')
			log.info("+--------+--------------------+----------------+----------------+----------------+----------------+----------------+----------------+----------------+------------+")
		else:
			log.info('|{:>7}'.format(str(flow_number))+" | Speed 0 or close to 0")

def run_sizetest(gensock,sutsock):
	log.info("+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+")
	log.info("| UDP, 1 flow, different packet sizes                                                                                                                             |")
	log.info("+--------+--------------------+----------------+----------------+----------------+----------------+----------------+----------------+----------------+------------+")
	log.info("| Pktsize|  Speed requested   | Sent to NIC    |  Sent by Gen   | Forward by SUT |  Rec. by Gen   |  Avg. Latency  |  Max. Latency  |  Packets Lost  | Loss Ratio |")
	log.info("+--------+--------------------+----------------+----------------+----------------+----------------+----------------+----------------+----------------+------------+")
	# PROX will use different packet sizes as defined in sizes[]
#	sizes=[1496,1020,508,252,124,60]
	sizes=[1020,508,252,124,60]
	for size in sizes:
		#speed = 100 Commented out: Not starting from 100% since we are trying smaller packets, so speed will not be higher than the speed achieved in previous loop
		gensock.reset_stats()
		if sutsock!='none':
			sutsock.reset_stats()
		gensock.set_size(gencores,0,size) # This is setting the frame size
		gensock.set_value(gencores,0,16,(size-14),2) # 18 is the difference between the frame size and IP size = size of (MAC addresses, ethertype and FCS)
		gensock.set_value(gencores,0,38,(size-34),2) # 38 is the difference between the frame size and UDP size = 18 + size of IP header (=20)
		# This will only work when using sending UDP packets. For different protocls and ehternet types, we would need a differnt calculation
		endpps_sut_tx_str = 'NO_RESULTS'
		maxspeed = speed = 100
		minspeed = 0
		while (maxspeed-minspeed > ACCURACY):
			print(str(size+4)+' bytes: 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)
			gensock.speed(speed, gencores)
			# Get statistics now that the generation is stable and NO ARP messages any more
			pps_req_tx,pps_tx,pps_sut_tx_str,pps_rx,lat_avg,lat_max, abs_dropped, abs_tx = run_iteration(gensock,sutsock)
			drop_rate = 100.0*abs_dropped/abs_tx
	        	if ((get_pps(speed,size) - pps_tx)/get_pps(speed,size))<0.001 and ((drop_rate < DROP_RATE_TRESHOLD) or (abs_dropped==DROP_RATE_TRESHOLD ==0)):
				endspeed = speed
				endpps_req_tx = pps_req_tx
				endpps_tx = pps_tx
				endpps_sut_tx_str = pps_sut_tx_str
				endpps_rx = pps_rx
				endlat_avg = lat_avg 
				endlat_max = lat_max 
				endabs_dropped = abs_dropped
				enddrop_rate = drop_rate
				success = True
			else:
				success = False 
			speed,minspeed,maxspeed = new_speed(speed,minspeed,maxspeed,success)
		if endpps_sut_tx_str <>  'NO_RESULTS':
                	log.info('|{:>7}'.format(size+4)+" | " + '{:>5.1f}'.format(endspeed) + '% ' +'{:>6.3f}'.format(get_pps(endspeed,size)) + ' Mpps | '+ '{:>9.3f}'.format(endpps_req_tx)+' Mpps | '+ '{:>9.3f}'.format(endpps_tx) +' Mpps | ' + '{:>9}'.format(endpps_sut_tx_str) +' Mpps | '+ '{:>9.3f}'.format(endpps_rx)+' Mpps | '+ '{:>9.0f}'.format(endlat_avg)+' us   | '+'{:>9.0f}'.format(endlat_max)+' us   | '+ '{:>14d}'.format(endabs_dropped)+ ' |'+'{:>9.2f}'.format(enddrop_rate)+ '%  |')
        		log.info("+--------+--------------------+----------------+----------------+----------------+----------------+----------------+----------------+----------------+------------+")
		else:
			log.debug('|{:>7}'.format(str(size))+" | Speed 0 or close to 0")


def run_irqtest(sock):
        log.info("+----------------------------------------------------------------------------------------------------------------------------")
        log.info("| Measuring time probably spent dealing with an interrupt. Interrupting DPDK cores for more than 50us might be problematic   ")
        log.info("| and result in packet loss. The first row shows the interrupted time buckets: first number is the bucket between 0us and    ")
	log.info("| that number expressed in us and so on. The numbers in the other rows show how many times per second, the program was       ")
        log.info("| interrupted for a time as specified by its bucket. '0' is printed when there are no interrupts in this bucket throughout   ")
        log.info("| the duration of the test. This is to avoid rounding errors in the case of 0.0                                              ") 
        log.info("+----------------------------------------------------------------------------------------------------------------------------")
        sys.stdout.flush()
	buckets=sock.show_irq_buckets(1)
        print('Measurement ongoing ... ',end='\r')
	sock.stop(irqcores)
	old_irq = [[0 for x in range(len(buckets)+1)] for y in range(len(irqcores)+1)] 
	irq = [[0 for x in range(len(buckets)+1)] for y in range(len(irqcores)+1)]
	irq[0][0] = 'bucket us' 
	for j,bucket in enumerate(buckets,start=1):
		irq[0][j] = '<'+ bucket
	irq[0][-1] = '>'+ buckets [-2]
	for j,bucket in enumerate(buckets,start=1):
		for i,irqcore in enumerate(irqcores,start=1):
			old_irq[i][j] = sock.irq_stats(irqcore,j-1)
	sock.start(irqcores)
	time.sleep(float(runtime))
	sock.stop(irqcores)
	for i,irqcore in enumerate(irqcores,start=1):
		irq[i][0]='core %s '%irqcore
		for j,bucket in enumerate(buckets,start=1):
			diff =  sock.irq_stats(irqcore,j-1) - old_irq[i][j]
			if diff == 0:
				irq[i][j] = '0'
			else:
				irq[i][j] = diff/float(runtime)
	log.info('\n'.join([''.join(['{:>12}'.format(item) for item in row]) for row in irq]))


def init_test():
# Running at low speed to make sure the ARP messages can get through.
# If not doing this, the ARP message could be dropped by a switch in overload and then the test will not give proper results
# Note hoever that if we would run the test steps during a very long time, the ARP would expire in the switch.
# PROX will send a new ARP request every seconds so chances are very low that they will all fail to get through
	sock[0].speed(0.01, gencores)
	sock[0].start(genstatcores)
	time.sleep(2)
	sock[0].stop(gencores)

global sutstatcores
global genstatcores
global latcores
global gencores
global irqcores
global DROP_RATE_TRESHOLD
global ACCURACY
vmDPIP =[]
vmAdminIP =[]
vmDPmac =[]
hexDPIP =[]
config_file =[]
script_control =[]

testconfig = ConfigParser.RawConfigParser()
testconfig.read(test+'.test')
required_number_of_test_machines = testconfig.get('DEFAULT', 'total_number_of_test_machines')
DROP_RATE_TRESHOLD = float(testconfig.get('DEFAULT', 'drop_rate_treshold'))
ACCURACY = float(testconfig.get('DEFAULT', 'accuracy'))
config = ConfigParser.RawConfigParser()
config.read(env+'.env')
key = config.get('OpenStack', 'key')
total_number_of_machines = config.get('rapid', 'total_number_of_machines')
if int(required_number_of_test_machines) > int(total_number_of_machines):
	log.exception("Not enough VMs for this test: %s needed and only %s available" % (required_number_of_test_machines,total_number_of_machines))
	raise Exception("Not enough VMs for this test: %s needed and only %s available" % (required_number_of_test_machines,total_number_of_machines))
for vm in range(1, int(total_number_of_machines)+1):
	vmAdminIP.append(config.get('M%d'%vm, 'admin_ip'))
	vmDPmac.append(config.get('M%d'%vm, 'dp_mac'))
	vmDPIP.append(config.get('M%d'%vm, 'dp_ip'))
	ip = vmDPIP[-1].split('.')
	hexDPIP.append(hex(int(ip[0]))[2:].zfill(2) + ' ' + hex(int(ip[1]))[2:].zfill(2) + ' ' + hex(int(ip[2]))[2:].zfill(2) + ' ' + hex(int(ip[3]))[2:].zfill(2))
machine_index = []
for vm in range(1, int(required_number_of_test_machines)+1):
	machine_index.append(int(testconfig.get('TestM%d'%vm, 'machine_index'))-1)
for vm in range(1, int(required_number_of_test_machines)+1):
	config_file.append(testconfig.get('TestM%d'%vm, 'config_file'))
	script_control.append(testconfig.get('TestM%d'%vm, 'script_control'))
        group1cores=testconfig.get('TestM%d'%vm, 'group1cores')
	if group1cores <> 'not_used':
		group1cores=ast.literal_eval(group1cores)
        group2cores=testconfig.get('TestM%d'%vm, 'group2cores')
	if group2cores <> 'not_used':
		group2cores=ast.literal_eval(group2cores)
        group3cores=testconfig.get('TestM%d'%vm, 'group3cores')
	if group3cores <> 'not_used':
		group3cores=ast.literal_eval(group3cores)
	with open("parameters%d.lua"%vm, "w") as f:
		f.write('name="%s"\n'% testconfig.get('TestM%d'%vm, 'name'))
		f.write('local_ip="%s"\n'% vmDPIP[machine_index[vm-1]])
		f.write('local_hex_ip="%s"\n'% hexDPIP[machine_index[vm-1]])
		gwVM = testconfig.get('TestM%d'%vm, 'gw_vm')
		if gwVM <> 'not_used':
			gwVMindex = int(gwVM)-1
			f.write('gw_ip="%s"\n'% vmDPIP[machine_index[gwVMindex]])
			f.write('gw_hex_ip="%s"\n'% hexDPIP[machine_index[gwVMindex]])
		destVM = testconfig.get('TestM%d'%vm, 'dest_vm')
		if destVM <> 'not_used':
			destVMindex = int(destVM)-1
			f.write('dest_ip="%s"\n'% vmDPIP[machine_index[destVMindex]])
			f.write('dest_hex_ip="%s"\n'% hexDPIP[machine_index[destVMindex]])
			f.write('dest_hex_mac="%s"\n'% vmDPmac[machine_index[destVMindex]].replace(':',' '))
                if group1cores <> 'not_used':
                        f.write('group1="%s"\n'% ','.join(map(str, group1cores)))
                if group2cores <> 'not_used':
                        f.write('group2="%s"\n'% ','.join(map(str, group2cores)))
                if group3cores <> 'not_used':
                        f.write('group3="%s"\n'% ','.join(map(str, group3cores)))
	if re.match('(l2){0,1}gen.*\.cfg',config_file[-1]):
		gencores = group1cores
		latcores = group2cores
		genstatcores = group3cores
	elif config_file[-1] == 'gen_gw.cfg':
		gencores = group1cores
		latcores = group2cores
		genstatcores = group3cores
	elif  re.match('(l2){0,1}swap.*\.cfg',config_file[-1]):
		sutstatcores = group1cores
	elif config_file[-1] == 'secgw2.cfg':
		sutstatcores = group1cores
	elif config_file[-1] == 'irq.cfg':
		irqcores = group1cores
	f.close
#####################################################################################
client =[]
sock =[]

for vm in range(0, int(required_number_of_test_machines)):
	client.append(prox_ctrl(vmAdminIP[machine_index[vm]], key+'.pem','root'))
	connect_client(client[-1])
# Creating script to bind the right network interface to the poll mode driver
	devbindfile = "devbindvm%d.sh"%(vm+1)
	with open("devbind.sh") as f:
		newText=f.read().replace('MACADDRESS', vmDPmac[machine_index[vm]])
		with open(devbindfile, "w") as f:
			f.write(newText)
	st = os.stat(devbindfile)
	os.chmod(devbindfile, st.st_mode | stat.S_IEXEC)
	client[-1].scp_put('./%s'%devbindfile, '/root/devbind.sh')
	cmd = '/root/devbind.sh'
	client[-1].run_cmd(cmd)
	log.debug("devbind.sh running on VM%d"%(vm+1))
	client[-1].scp_put('./%s'%config_file[vm], '/root/%s'%config_file[vm])
	client[-1].scp_put('./parameters%d.lua'%(vm+1), '/root/parameters.lua')
	log.debug("Starting PROX on VM%d"%(vm+1))
	if script_control[vm] == 'true':
		cmd = '/root/prox/build/prox -e -t -o cli -f /root/%s'%config_file[vm]
	else:
		cmd = '/root/prox/build/prox -t -o cli -f /root/%s'%config_file[vm]
	if configonly == False:
		client[-1].fork_cmd(cmd, 'PROX Testing on TestM%d'%(vm+1))
		sock.append(connect_socket(client[-1]))
if configonly:
	sys.exit()
init_code = testconfig.get('DEFAULT', 'init_code')
if init_code <> 'not_used':
	eval(init_code)
####################################################
# Run test cases
# Best to run the flow test at the end since otherwise the tests coming after thatmight be influenced by the big number of entries in the switch flow tables
####################################################
number_of_tests = testconfig.get('DEFAULT', 'number_of_tests')
for vm in range(1, int(number_of_tests)+1):
	cmd=testconfig.get('test%d'%vm,'cmd')
	eval(cmd)
####################################################
for vm in range(0, int(required_number_of_test_machines)):
	sock[vm].quit()
	client[vm].close()