Bibliography

Air

Web Site, http://www.apple.com/airportexpress.

BHB04

Brett Bode, Jason Hill, and Troy Benjegerdes.
Cluster interconnect overview.
Proceedings of the USENIX Extreme Linux Technical Conference, pages 211-218, July 2004.

BPSK97

Hari Balakrishnan, Venkata N. Padmanabhan, Srinivasan Seshan, and Randy H. Katz.
A comparison of mechanisms for improving TCP performance over wireless links.
IEEEACM Transactions on Networking, 5(6):756-769, 1997.

FA

Shaojian Fu and Mohammed Atiquzzaman.
Sctp: State of the art in research, products, and technical challenges.
http://www.cs.ou.edu/ atiq/publications.html.

FAI

Shaojian Fu, Mohammed Atiquzzaman, and William Ivancic.
Sctp over satellite networks.
http://www.cs.ou.edu/ atiq/publications.html.

iBo

Web Site, http://www.apple-history.com/frames/body.php?page=gallery&model=ibook.

ipe

Web Site, http://dast.nlanr.net/Projects/Iperf/.

LJ

Chunlei Liu and Raj Jain.
Congestion coherence: A local enhancement for tcp over wireless links.
http://www.cse.ohio-state.edu/ jain/papers/coh.htm.

lkS

Web Site, http://lksctp.sourceforge.net/.

ope

Web Site, http://openss7.org/.

APPENDIX A: runtest.py

#!/usr/bin/env python

import os, time, string

runtime = 60
noisedelay = 20
noisetime = 30

datasrc =  ["talia", "192.168.20.3", "lyta.local"]
noisesrc = ["lyta.local", "192.168.10.2", "talia"]
dir = "cd /raid/home/hozer/cpre543x/tests/; "

#bandwidth rates for noise (kilobits/sec), default iperf UDP packets
noiserates = [ 0, 50, 100, 200, 500, 1000, 2000 ]
#noiserates = [ 0 ]

#iperf '-l' argument
sizes = [1, 4, 16, 64, 256, 1024, 4096, 16384, 65536, 262144]


args = ['', '-z', '-u -b30M']

for sz in sizes:

    print "size %d" % sz

    for nz in noiserates:
        print "noise rate %d" % nz
        for arg in args:
            print "arg: %s" % arg
            file = datasrc[0] + '_sz-%d_nz-%d_'%(sz,nz) + \
                                    string.replace(arg, ' ', '')
            #start data recv
            cmd = dir + "./iperf -i1 -s %s | tee rs/recv-%s" \
                                        % (arg, file)
            datarecv = os.spawnlp(os.P_NOWAIT, 'ssh', 'ssh', \
                                                datasrc[2], cmd)

            if nz:
                #start noise recv
                cmd = dir + "./iperf -i1 -s -u | tee rs/nsrc-%s" \
                                                        % (file)
                noiserecv = os.spawnlp(os.P_NOWAIT, 'ssh', 'ssh', \
                                                noisesrc[2], cmd)

            time.sleep(1)
            #start data send
            cmd = dir+"./iperf -i1 -t%s -c%s -l%s %s | tee rs/send-%s"%(
                                runtime, datasrc[1], sz, arg, file )
            datasend = os.spawnlp(os.P_NOWAIT, 'ssh', 'ssh', \
                                                datasrc[0], cmd)

            if nz:
                #start noise send
                cmd = dir+"./iperf -i1 -t%s -c%s -u -b%sK | tee rs/nssd-%s"%(
                                noisetime, noisesrc[1], nz, file)
                time.sleep(noisedelay)
                noisesend = os.spawnlp(os.P_WAIT, 'ssh', 'ssh', \
                                                noisesrc[0], cmd)

            os.waitpid(datasend, 0)

            time.sleep(1)
            os.system("ssh %s killall iperf" % datasrc[2])
            if nz:
                os.system("ssh %s killall iperf" % noisesrc[2])

            os.wait()

APPENDIX B: vis-totbw.py

#!/usr/bin/env python

import os, time, string, sys
from Numeric import *
from mayavi.tools import imv

runtime = 60
noisedelay = 20
noisetime = 30

datasrc =  ["talia", "192.168.20.3", "lyta.local"]
noisesrc = ["lyta.local", "192.168.10.2", "talia"]
dir = "cd /raid/home/hozer/cpre543x/tests/; "

#bandwidth rates for noise (kilobits/sec), default iperf UDP packets
noiserates = [ 0, 50, 100, 200, 500, 1000, 2000 ]
#noiserates = [ 0 ]

#iperf '-l' argument
sizes = [1, 4, 16, 64, 256, 1024, 4096, 16384, 65536, 262144]


args = ['-u -b30M', '', '-z']
debug=0

v = ''

for arg in args:
  z = []
  for sz in sizes:
    n = []
    for nz in noiserates:
        file = 'rs/send-' + datasrc[0] + '_sz-%d_nz-%d_'%(sz,nz) + \
                string.replace(arg, ' ', '')

        f = open(file,'r')
        totbytes = 0
        lastbw = 0
        for line in f.readlines():

                if line[0] != '[':
                        continue

                if line[2:4] == 'ID':
                        continue

                l = string.split(line,'Bytes')
                if len(l) < 2:
                        continue

                bw = l[1][0:7]
                mag = l[1][7:12]
                mult = 0
                if mag == "bits/":
                        mult=1
                elif mag == "Kbits":
                        mult=1000
                elif mag == "Mbits":
                        mult=1000*1000
                if debug:
                        print bw +'  --|' + mag + '|'
                try:
                        bw = float(bw) * mult
                        lastbw = bw
                except ValueError:
                        continue


        sys.stdout.write("file %s" % file)
        sys.stdout.write(" bw %d\n" % lastbw)

        n.append(lastbw)

    z.append(n)

#  v = imv.view(array(z))
#  v.master.wait_window()
  vis = not debug
  if vis:
    x = array(noiserates)
    y = array(sizes)
    z = array(z)
    s = [1.0/noiserates[-1],1.0/sizes[-1],1.0/25e7]
    s = [1.0/2000,1.0/200,1.0/25e7]
    if v:
      v = imv.surf(x,y,z,scale=s,viewer=v)
    else:
      v = imv.surf(x,y,z,scale=s)

  else:
    print z

v.master.wait_window()

APPENDIX C: vis.py

#!/usr/bin/env python

import os, time, string, sys
from Numeric import *
from mayavi.tools import imv

runtime = 60
noisedelay = 20
noisetime = 30

datasrc =  ["talia", "192.168.20.3", "lyta.local"]
noisesrc = ["lyta.local", "192.168.10.2", "talia"]
dir = "cd /raid/home/hozer/cpre543x/tests/; "

#bandwidth rates for noise (kilobits/sec), default iperf UDP packets
noiserates = [ 0, 50, 100, 200, 500, 1000, 2000 ]
#noiserates = [ 0 ]

#iperf '-l' argument
sizes = [1, 4, 16, 64, 256, 1024, 4096, 16384, 65536, 262144]


args = ['-u -b30M', '', '-z']
debug=0

v = ''

for arg in args:
  z = []
  for sz in sizes:
    n = []
    for nz in noiserates:
        t = []
        file = 'rs/send-' + datasrc[0] + '_sz-%d_nz-%d_'%(sz,nz) + \
                string.replace(arg, ' ', '')

        f = open(file,'r')
        totbytes = 0
        lastbw = 0
        for line in f.readlines():

                if line[0] != '[':
                        continue

                if line[2:4] == 'ID':
                        continue

                l = string.split(line,'Bytes')
                if len(l) < 2:
                        continue

                bw = l[1][0:7]
                mag = l[1][7:12]
                mult = 0
                if mag == "bits/":
                        mult=1
                elif mag == "Kbits":
                        mult=1000
                elif mag == "Mbits":
                        mult=1000*1000
                if debug:
                        print bw +'  --|' + mag + '|'
                try:
                        bw = float(bw) * mult
                        t.append(bw)
                        lastbw = bw
                except ValueError:
                        continue

        t.pop()
        if len(t) > 60:
                print "len t is %d" % len(t)
                sys.exit(1)

        while len(t) < 60: t.append(0)

        sys.stdout.write("%s, " % file)
        for i in t:
                sys.stdout.write("%d, " %i)
        sys.stdout.write("%d\n"%lastbw)

        z.append(t)



#  v = imv.view(array(z))
#  v.master.wait_window()
  z = array(z)
  vis = 0
  if vis:
    x = arange(60)
    y = arange(len(noiserates)*len(sizes))
    s = [1.0,1.0,1.0/25e5]
    if v:
      v = imv.surf(x,y,z,scale=s,viewer=v)
    else:
      v = imv.surf(x,y,z,scale=s)

  else:
    pass
#    print z


if vis:
  v.master.wait_window()