blob: f0af0505be82fd5e1033d4371ac819e1a633914a [file] [log] [blame]
#!/usr/bin/python
'''
Script that tests Flow Synchronizer performance
Author: Brian O'Connor <bocon@onlab.us>
Usage:
1. Ensure that ONOS is running
2. sudo ./flow-sync-perf.sh <list of tests>
e.g. sudo ./flow-sync-perf.sh 1 10 100 1000
or to run the default tests:
sudo ./flow-sync-perf.sh
3. Results are CSV files in a date stamped directory
'''
import csv
import os
import sys
from time import sleep, strftime
from subprocess import Popen, call, check_output, PIPE
from mininet.net import Mininet
from mininet.topo import SingleSwitchTopo
from mininet.node import RemoteController
from mininet.cli import CLI
from mininet.log import setLogLevel
try:
import pexpect
except:
# install pexpect if it cannot be found and re-import
print '* Installing Pexpect'
call( 'apt-get install -y python-pexpect', stdout=PIPE, shell=True )
import pexpect
ONOS_HOME = '..'
ONOS_LOG = '%s/onos-logs/onos.%s.log' % ( ONOS_HOME, check_output( 'hostname').strip() )
print "ONOS Log File:", ONOS_LOG
# Verify that tcpkill is installed
if not Popen( 'which tcpkill', stdout=PIPE, shell=True).communicate():
print '* Installing tcpkill'
call( 'apt-get install -y dsniff', stdout=PIPE, shell=True )
# ----------------- Tests scenarios -------------------------
def doNothing(n):
print "Doing nothing with %d flows..." % n
def addFakeFlows(n):
print "Adding %d random flows to switch..." % n
for i in range( 1, (n+1) ):
a = i / (256*256) % 256
b = i / 256 % 256
c = i % 256
ip = '10.%d.%d.%d' % (a,b,c)
call( 'ovs-ofctl add-flow s1 "ip, nw_src=%s/32, idle_timeout=0, hard_timeout=0, cookie=%d, actions=output:2"' % ( ip, i ), shell=True )
def delFlowsFromSwitch(n):
print "Removing all %d flows from switch..." % n
call( 'ovs-ofctl del-flows s1', shell=True )
# ----------------- Utility Functions -------------------------
def wait(time, msg=None):
if msg:
print msg,
for i in range(time):
sys.stdout.write('.')
sys.stdout.flush()
sleep(1)
print ". done"
def startNet(net):
tail = pexpect.spawn( 'tail -0f %s' % ONOS_LOG )
sleep(1)
net.start()
print "Waiting for ONOS to detech the switch..."
index = tail.expect(['Sync time \(ms\)', pexpect.EOF, pexpect.TIMEOUT])
if index >= 1:
print '* ONOS not started'
net.stop()
exit(1)
tail.terminate()
def dumpFlows():
return check_output( 'ovs-ofctl dump-flows s1', shell=True )
def addFlowsToONOS(n):
print "Adding %d flows to ONOS" % n,
call( './generate_flows.py 1 %d > /tmp/flows.txt' % n, shell=True )
#call( '%s/web/add_flow.py -m onos -f /tmp/flows.txt' % ONOS_HOME, shell=True )
p = Popen( '%s/web/add_flow.py -m onos -f /tmp/flows.txt' % ONOS_HOME, shell=True )
while p.poll() is None:
sys.stdout.write('.')
sys.stdout.flush()
sleep(1)
print ". done\nWaiting for flow entries to be added to switch",
while True:
output = check_output( 'ovs-ofctl dump-flows s1', shell=True )
lines = len(output.split('\n'))
if lines >= (n+2):
break
sys.stdout.write('.')
sys.stdout.flush()
sleep(1)
print ". done\nWaiting for flow entries to be visible in network graph",
while True:
output = pexpect.spawn( '%s/web/get_flow.py all' % ONOS_HOME )
count = 0
while count < n:
if output.expect(['FlowEntry', pexpect.EOF], timeout=2000) == 1:
break
count += 1
print '. done'
return
sys.stdout.write('.')
sys.stdout.flush()
sleep(5)
def removeFlowsFromONOS(checkSwitch=True):
print "Removing all flows from ONOS",
#call( '%s/web/delete_flow.py all' % ONOS_HOME, shell=True )
p = Popen( '%s/web/delete_flow.py all' % ONOS_HOME, shell=True )
while p.poll() is None:
sys.stdout.write('.')
sys.stdout.flush()
sleep(1)
print ". done"
if checkSwitch:
print "Waiting for flow entries to be removed from switch",
while True:
output = check_output( 'ovs-ofctl dump-flows s1', shell=True )
lines = len(output.split('\n'))
if lines == 2:
break
sys.stdout.write('.')
sys.stdout.flush()
sleep(1)
print ". done"
print "Waiting for flow entries to be removed from network graph",
while True:
output = pexpect.spawn( '%s/web/get_flow.py all' % ONOS_HOME )
if output.expect(['FlowEntry', pexpect.EOF], timeout=2000) == 1:
break
sys.stdout.write('.')
sys.stdout.flush()
sleep(5)
print '. done'
# ----------------- Running the test and output -------------------------
def test(i, fn):
# Start tailing the onos log
tail = pexpect.spawn( "tail -0f %s" % ONOS_LOG )
# disconnect the switch from the controller using tcpkill
tcp = Popen( 'exec tcpkill -i lo -9 port 6633 > /dev/null 2>&1', shell=True )
# wait until the switch has been disconnected
tail.expect( 'Switch removed' )
# call the test function
fn(i)
# dump to flows to ensure they have all made it to ovs
dumpFlows()
# end tcpkill process to reconnect the switch to the controller
tcp.terminate()
tail.expect('Sync time \(ms\):', timeout=6000)
tail.expect('([\d.]+,?)+\s')
print "* Results:", tail.match.group(0)
tail.terminate()
wait(3, "Waiting for 3 seconds between tests")
return tail.match.group(0).strip().split(',')
def initResults(files):
headers = ['# of FEs', 'Flow IDs from Graph', 'FEs from Switch', 'Compare',
'Read FE from graph', 'Extract FE', 'Push', 'Total' ]
for filename in files.values():
with open(filename, 'w') as csvfile:
writer = csv.writer(csvfile)
writer.writerow(headers)
def outputResults(filename, n, results):
results.insert(0, n)
with open(filename, 'a') as csvfile:
writer = csv.writer(csvfile)
writer.writerow(results)
def runPerf( resultDir, tests):
fileMap = { 'add': os.path.join(resultDir, 'add.csv'),
'delete': os.path.join(resultDir, 'delete.csv'),
'sync': os.path.join(resultDir, 'sync.csv') }
initResults(fileMap)
removeFlowsFromONOS(checkSwitch=False) # clear ONOS before starting
# start Mininet
topo = SingleSwitchTopo()
net = Mininet(topo=topo, controller=RemoteController)
print "Starting Mininet"
startNet(net)
wait(30, "Give ONOS 30 seconds to warm up") # let ONOS "warm-up"
for i in tests:
addFlowsToONOS(i)
outputResults(fileMap['sync'], i, test(i, doNothing))
outputResults(fileMap['delete'], i, test(i, delFlowsFromSwitch))
removeFlowsFromONOS()
outputResults(fileMap['add'], i, test(i, addFakeFlows)) # test needs empty DB
net.stop()
if __name__ == '__main__':
setLogLevel( 'output' )
resultDir = strftime( '%Y%m%d-%H%M%S' )
os.mkdir( resultDir )
tests = sys.argv[1:]
if not tests:
tests = [1, 10, 100, 1000, 10000]
runPerf( resultDir, tests )