3 analysis(easier awk)

8/12/2019 3 Analysis(Easier Awk)

1/36


2/36

#utline

A Simulation and its results The Format of Trace File The AWK language

Result Analysis End-to-End Delay Jitter

Pacet !oss

Figure "ut#ut $%lot

'


3/36

" Simulation$ %CP and U&P

s'

s1

r d

tc#

ud#

ft#

c(r

)

sin

null

T*P and &DP +ueuing

,1 s . /0 s

1 s . /, s


4/36

%he #%cl Script

set s1 [$ns node]set s2 [$ns node]set r [$ns node]set d [$ns node]

$ns duplex-link $s1 $r 2Mb 10ms DropTail

$ns duplex-link $s2 $r 2Mb 10ms DropTail$ns duplex-link $r $d 1.7Mb 20ms DropTail

$ns queue-limit $r $d 10

$ns duplex-link-op $s1 $r orient right-down

$ns duplex-link-op $s2 $r orient right-up$ns duplex-link-op $r $d orient right

$ns duplex-link-op $r $d queuePos 0.5

/


5/36

%he #%cl Script

set tcp [new Agent/TCP]$ns attach-agent $s1 $tcpset sink [new Agent/TCPSink]$ns attach-agent $d $sink$ns connect $tcp $sink

$tcp set fid_ 1

set ftp [new Application/FTP]$ftp attach-agent $tcp$ftp set type_ FTP

0


6/36

%he #%cl Script

set udp [new Agent/UDP]$ns attach-agent $s2 $udpset null [new Agent/Null]$ns attach-agent $d $null$ns connect $udp $null

$udp set fid_ 2

set cbr [new Application/Traffic/CBR]$cbr attach-agent $udp$cbr set type_ CBR

$cbr set packet_size_ 1000$cbr set rate_ 1mb$cbr set random_ false


7/36

%he #%cl Script

$ns at 0.1 "$cbr start"$ns at 1.0 "$ftp start"$ns at 4.0 "$ftp stop"$ns at 4.5 "$cbr stop"

$ns at 4.5 "$ns detach-agent $s1 $tcp; $ns detach-agent $d

$sink"

$ns at 5.0 "finish"

2


8/36

N"M !esult

3


9/36

%race 'ile

+ 0.1 1 2 cbr 1000 ------- 2 1.0 3.1 0 0- 0.1 1 2 cbr 1000 ------- 2 1.0 3.1 0 0+ 0.108 1 2 cbr 1000 ------- 2 1.0 3.1 1 1- 0.108 1 2 cbr 1000 ------- 2 1.0 3.1 1 1r 0.114 1 2 cbr 1000 ------- 2 1.0 3.1 0 0+ 0.114 2 3 cbr 1000 ------- 2 1.0 3.1 0 0

- 0.114 2 3 cbr 1000 ------- 2 1.0 3.1 0 0+ 0.116 1 2 cbr 1000 ------- 2 1.0 3.1 2 2- 0.116 1 2 cbr 1000 ------- 2 1.0 3.1 2 2r 0.122 1 2 cbr 1000 ------- 2 1.0 3.1 1 1+ 0.122 2 3 cbr 1000 ------- 2 1.0 3.1 1 1- 0.122 2 3 cbr 1000 ------- 2 1.0 3.1 1 1

+ 0.124 1 2 cbr 1000 ------- 2 1.0 3.1 3 3- 0.124 1 2 cbr 1000 ------- 2 1.0 3.1 3 3r 0.13 1 2 cbr 1000 ------- 2 1.0 3.1 2 2+ 0.13 2 3 cbr 1000 ------- 2 1.0 3.1 2 2- 0.13 2 3 cbr 1000 ------- 2 1.0 3.1 2 2+ 0.132 1 2 cbr 1000 ------- 2 1.0 3.1 4 4

... 4


10/36

%race 'ormat

++0.10.11122cbrcbr10001000--------------221.01.03.13.10000

EventEventTimeTime

From nodeFrom nodeTo nodeTo nodePacket TypePacket TypePacket SizePacket SizeFlagsFlags

Flow IDFlow IDSource addressSource addressDestination addressDestination addressSequence numberSequence numberPacket IDPacket ID

r: receiver: receive+: enqueue+: enqueue

-: dequeue-: dequeued: dropd: drop

src_node.portsrc_node.portdest_node.portdest_node.port

1,


11/36

"() *anguage

Designed for te5t analysis Similar to * (ut more sim#le Read the records line (y line

6,7 the 8hole string in the corres#onding line

617 the first data in the corres#onding line

6'7 the second data in the corres#onding line

++0.10.11122cbrcbr10001000--------------221.01.03.13.10000

61 6' 6) 6/ 60 6 62 63 64 61, 611 61'

11


12/36

"() *anguage +Cont,

Three #arts in the AWK code 9E$:%

Process

E%D Process Procedure

1;Read one record

';date the #arameters

);Run the Pattern *ode

/;Re#eat until no record remain

1'


13/36

"n "() Eample

AWK *ode7 a8a8 file

9E$:%< sum=,>?

< if@61==B; < sumBB>

??

E%D< #rintf@The num(er of enCueue is7 dnsum;>?

1)


14/36

"n "() Eample +Cont,

&se the a8a8 to anlyGe the outtr trace file.6 a8 -f a8a8 outtr

"ut#ut the results into sumt5t.6 a8 -f a8a8 outtr H sumt5t

1/


15/36

"nalysis .$ End-to-End &elay

*alculate the duration of a #acet

:n this e5am#le 8e calculate the end-to-enddelay for the c(r traffic Iia ud# transmission

s'

r d

Start Time

End Time

End to End Delay = End Time Start Time

10


16/36

"nalysis .$ End-to-End &elay+Cont,

9E$:% < highest#acetid=,> ?< action = 61> time = 6'> from = 6)> to = 6/> ty#e = 60> #tsiGe = 6> flo8id = 63> src = 64> dst = 61,> seCno = 611> #acetid = 61'> if @ #acetid H highest#acetid ; highest#acetid = #acetid> if @ starttimeL#acetidM == , ;

starttimeL#acetidM = time> if @ flo8id == ' NN action O= d ; < if@ action == r ; < endtimeL#acetidM = time> ? else < endtimeL#acetidM = -1> ?

?? 1


17/36


E%D #acetid highest#acetid> #acetidBB; < start = starttimeL#acetidM> end = endtimeL#acetidM> #acetduration = end-start> if@ start end ; < #rintf@f fnstart #acetduration;> ? ??

12


18/36


.6 a8 -f delaya8 outtr H delayt5t

delayt5t7,1,,,,, ,,)32,

,1,3,,, ,,)32,

,11,,, ,,)32,

,1'/,,, ,,)32,

,1)',,, ,,)32,

,1/,,,, ,,)32,

,1/3,,, ,,)32,

,10,,, ,,)32, 13


19/36

"nalysis 2$ /itter

Jitter re#resents the Iariance of delay

Jitter = @ @EndTime@;-StartTime@;; - @EndTime@i;-StartTime@i;; ; @ i;

:n this e5am#le 8e calculate the itter for thec(r traffic Iia ud# transmission

14


20/36

"nalysis 2$ /itter+Cont,

9E$:% < highest#acetid=,> ?

time = 6'> from = 6)> to = 6/> ty#e = 60> #tsiGe = 6>

flo8id = 63> src = 64> dst = 61,> seCno = 611> #acetid = 61'> if @ #acetid H highest#acetid ; highest#acetid = #acetid>

if @ starttimeL#acetidM == , ; < #tseCnoL#acetidM = seCno> starttimeL#acetidM = time> ? if @ flo8id == ' NN action O= d ; < if@ action == r ; < endtimeL#acetidM = time> ? else < endtimeL#acetidM = -1> ? ?

? ',


21/36

"nalysis 2$ /itter+Cont,E%D < lastseCuno = ,>

lastdelay = ,> seCnodiff = ,> for@#acetid=,> #acetid highest#acetid> #acetidBB; < start = starttimeL#acetidM> end = endtimeL#acetidM> #acetduration = end-start>

if@ start end ; < seCnodiff = #tseCnoL#acetidM-lastseCno> delaydiff = #acetduration - lastdelay>

if @ seCnodiff == , ; < itter = ,> ? else < itter = delaydiffseCnodiff> ?

#rintf@f fnstart itter;> lastseCno = #tseCnoL#acetidM> lastdelay = #acetduration> ? ?? '1


22/36

"nalysis 2$ /itter+Cont,

.6 a8 ittera8 outtr H ittert5t

,1,,,,, ,,,,,,,

,1,3,,, ,,,,,,,

,11,,, ,,,,,,,

,1'/,,, -,,,,,,,

,1)',,, ,,,,,,,

,1/,,,, ,,,,,,,

,1/3,,, ,,,,,,,

,10,,, -,,,,,,,

Q ''


23/36

"nalysis 3$ Pac0et *oss

:n the transmission some of the #acets may(e lost due to the oIerflo8 of the Cueue

!oss = PacetsSent - PacetsRecieIe

:n this e5am#le 8e calculate the #acet loss forthe c(r traffic Iia ud# transmission

s'

r d

Start Time

End Time

')

l i 0 + ,


24/36

"nalysis 3$ Pac0et *oss+Cont,

9E$:% < fsDro#s = ,> numFs = ,> ?< action = 61> time = 6'> from = 6)> to = 6/> ty#e = 60>

#tsiGe = 6> flo8id = 63> src = 64> dst = 61,> seCno = 611> #acetid = 61'> if @ from == 1 NN to == ' NN action == B ;

< numFsBB> ? if @ flo8id == ' NN action == d ; < fsDro#sBB> ??E%D?

'/

P i . %h h


25/36

Practice .$ %hroughput

To calculate the aIerage through#ut of the c(rtraffic (et8een node ' and node )

AIerage Through#ut = Total RecieIed 9ytes Ela#sed Time

"nce node ) recieIe a #acet #rint out thereal-time though#ut

'0

'i # t t


26/36

'igure #utput

A #icture #aints a thousand 8ords :n a #a#er figures@#lots; are al8ays the

essential #arts of the simulation and analysissection

Tools for figure dra8ing atla(

athematica

$%lot

'

1NU l t


27/36

1NUplot

Porta(le command-line driIen gra#hing utility Su##ort !inu5 Windo8s ac "S :t allo8s scientists and students to IisualiGe

mathematical functions and data Su##orts many ty#es of #lots in either 'D and

)D htt#7888gnu#lotinfo :nstallation in &(untu from source

sudo a#t-get install gnu#lot

'2

t d fi
http://www.gnuplot.info/http://www.gnuplot.info/


28/36

o to dra a figure

Enter the $%lot model

Dra8 a #lot

.6 gnu#lot

gnu#lot H #lot Udelayt5tU

To denote thegnu#lot model

To denote thegnu#lot model

The command fordra8ing

The command fordra8ing The file name

The file name

'3

! lt f th 1NU l t


29/36

!esult from the 1NUplot

'4

Commands in 1NUplot +.,


30/36

Commands in 1NUplot +.,

Set A5is Range

Ste#

E5am#le For 5 a5is

Sho8ing range

gnu#lot H set 5tics -1,11,gnu#lot H #lot sin@5;

gnu#lot H set yrange L-'7'Mgnu#lot H #lot sin@5;

VV

),

Commands in 1NUplot +2,


31/36


Sho8 gridgnu#lot H set gridgnu#lot H #lot sin@5;

)1



32/36


!a(els

gnu#lot H set title U*9R DelayUgnu#lot H set 5la(el USimulation Time @s;Ugnu#lot H set yla(el UDelay @s;Ugnu#lot H unset eygnu#lot H set la(el Uconstant delay = ,)32, secU at ,1,,0gnu#lot H set arro8 from ,0,,0 to ,0,,/

gnu#lot H #lot Udelayt5tU 8ith lines#oints

yla(elyla(el

5la(el5la(el

titletitle

la(ella(el

arro8arro8

)'



33/36


Styles lines

#oints

lines#oints

im#ulses

dots

ste#s

error(ars

#oints im#ulses

lines ste#s

))

Command in 1NUplot +5,


34/36

Command in 1NUplot +5,

"ut#ut

set the #icture formatgnu#lot H set terminal #ngset the out#ut file namegnu#lot H set out#ut Udelay#ngU

dra8 the #lotgnu#lot H #lot Udelayt5tU 8ith lines#oints

)/

1P* script


35/36

1P* script

:t is inconIenient to in#ut commands Ty#os mae errors

We may redra8 the #lot for many times

Solution Write the $P! scri#t as g#l file

Run the scri#t in the terminal

.6 gnu#lot -#ersist delayg#l

set title *9R Delayset 5la(el Simulation Time @s;set yla(el Delay @s;unset eyset la(el constant delay = ,)32, sec at ,1,,0set arro8 from ,0,,0 to ,0,,/set terminal #ngset out#ut c(rdelay#ng#lot delayt5t 8ith lines#oints

)0

6uestions7


36/36

6uestions7

Than you O

3 analysis(easier awk)

Documents