[ns] e2e delay
hello
i am workin with ns...and i am tring to analyse the trace file..
i have found an awk programm that calculate the end to end delay...
http://mailman.isi.edu/pipermail/ns-users/2007-August/060808.html
however i didn't understand, this part of the program (i know that is
calculating the end to end delay : but how this is done) :
# CALCULATE DELAY
if ( start_time[packet_id] == 0 ) start_time[packet_id] = time;
if (( $1 == r) ( $35 == cbr ) ( $19==AGT )) {
end_time[packet_id] = time; }
else { end_time[packet_id] = -1; }
..
...
for ( i in end_time )
{
start = start_time[i];
end = end_time[i];
packet_duration = end - start;
if ( packet_duration 0 )
{sum += packet_duration;
recvnum++;
}
}
can you help me..
thanks in advance
--
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Re: [ns] NAM does not run wireless simulation over ns 2
try this command...
first as first remark
its preferable to work under this directory : /ns-allinone-2.33/bin and put
in it the trace file , the nam file and obviously the Tcl file..ok
second
i will suppose that you have done this.so to run the nam file :
exec ./nam /home/faraz/Desktop/ns-allinone-2.33/bin/attachment
i hope that it will work
Syed Faraz Hasan wrote:
Hello ALL,
I am trying to visualize the entire simulation using NAM. I open the .nam
file in the finish procedure. I have associated CBR source with one of the
nodes to make it send packets to another node. NAM executes properly at
the beginning (but does not show nodes at all), as soon as the scheduled
time of sending packets arrive NAM exits. Although it generates the trace
file.
Please write back soon
Heres the code...
# ==
# Define options
# ==
set val(chan) Channel/WirelessChannel;# channel type
set val(prop) Propagation/TwoRayGround ;# radio-propagation
model
set val(netif) Phy/WirelessPhy;# network interface
type
set val(mac)Mac/802_11 ;# MAC type
set val(ifq)Queue/DropTail/PriQueue;# interface queue type
set val(ll) LL ;# link layer type
set val(ant)Antenna/OmniAntenna;# antenna model
set val(ifqlen) 50 ;# max packet in ifq
set val(nn) 3 ;# number of
mobilenodes
set val(rp) AODV ;# routing protocol
set val(x) 880 ;# x-axis of grid
set val(y) 880 ;# y-axis of grid
set opt(energymodel)EnergyModel ;
set opt(radiomodel) RadioModel ;
set opt(initialenergy) 1000;# Initial energy in Joules
set num_ms_nodes10;
set opt(nn) 2;
# ==
# Main Program
# ==
#
# Initialize Global Variables
#
#start the simulator
set ns [new Simulator]
#open the trace file
set tracefile1 [open a.tr w]
$ns trace-all $tracefile1
#Open NAM file
set nf [open attachment.nam w]
$ns namtrace-all $nf
#define the procedure finish
#proc finish {} {
#global ns tracefile1
#$ns flush-trace
#close $tracefile1
#exit 0
#}
proc finish {} {
global ns nf
$ns flush-trace
close $nf
exec /home/faraz/Desktop/ns-allinone-2.33/nam-1.13/nam
attachment.nam
exit 0
}
# set up topography object
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
# Create God General Operations Director
create-god [expr $opt(nn) + $num_ms_nodes]
# Create channel #1 and #2
set chan_1_ [new $val(chan)]
#
# Create the specified number of mobilenodes [$val(nn)] and attach them
# to the channel.
# Here two nodes are created : node(0) and node(1)
# configure node
$ns node-config -adhocRouting $val(rp) \
-llType $val(ll) \
-macType $val(mac) \
-ifqType $val(ifq) \
-ifqLen $val(ifqlen) \
-antType $val(ant) \
-propType $val(prop) \
-phyType $val(netif) \
-topoInstance $topo \
-agentTrace OFF \
-routerTrace ON \
-macTrace OFF \
-movementTrace OFF\
-channel $chan_1_
#-energyModel $opt(energymodel) \
-idlePower 1.0 \
-rxPower 1.0 \
-txPower 1.0 \
-sleepPower 0.001 \
-transitionPower 0.2 \
-transitionTime 0.005 \
-initialEnergy $opt(initialenergy)
for {set i 0} {$i $val(nn) } {incr i} {
set node_($i) [$ns node]
$node_($i) random-motion 0 ;# disable random motion
}
set udp0 [new Agent/UDP]
$ns attach-agent $node_(0) $udp0
set cbr0 [new Application/Traffic/CBR]
$cbr0 set packetSize_ 1000
$cbr0 set interval_ 0.005
$cbr0 attach-agent $udp0
set null0 [new Agent/Null]
$ns attach-agent $node_(1) $null0
$ns connect $udp0 $null0
$ns at 1 $cbr0 start
$ns at 4 $cbr0 stop
$ns at 4.1 finish
puts Starting Simulation...
$ns run
--
View this message in context:
[ns] otcl tutorial needed
can ne1 suggest a gud otcl tutorial.i found one.but that seems not enuf...plz do provide useful links -- View this message in context: http://www.nabble.com/otcl-tutorial-needed-tp21371733p21371733.html Sent from the ns-users mailing list archive at Nabble.com.
[ns] passing parmeters from .tcl files to .cc
Hi all As you know, in the implementation of routing protocols, for example in aodv we have AODV::AODV(nsaddr_t id) ; so I want to create a .tcl file in which I have nodes , and each node has an identifier that will be passed as the nsaddr_t id (the argument of AODV) how can I do this please? thank you for your help.
[ns] Segmentation fault when compiling
Hi everybody, I am working on ns2.33 using cygwin. When compiling the attached code, I get the following message: $ ./ns Evaltran.tcl num_nodes is set 1 warning: Please use -channel as shown in tcl/ex/wireless-mitf.tcl INITIALIZE THE LIST xListHead Base station is created! wireles node is created! 39.312258 Simulation starts!! Segmentation fault (core dumped) An ns.exe text file appears in my compiling folder with the following content Exception: STATUS_ACCESS_VIOLATION at eip=18F71E50 eax= ebx=011F762C ecx=011EBDE4 edx=011F6808 esi=00229B00 edi=00229B50 ebp=002294B8 esp=002293E0 program=C:\cygwin\home\KiKoLoCo\ns-allinone-2.33\ns-2.33\ns.exe, pid 8112, thread main cs=001B ds=0023 es=0023 fs=003B gs= ss=0023 Stack trace: Frame Function Args 002294B8 18F71E50 (011E0998, 0602, , ) 002294D8 19226F3E (011E0998, 0602, , 1913AFAB) 002294F8 18F8685D (011E1E08, 0602, 00229518, 18F88603) 00229518 18F86ED0 (011E1E08, 011E1E08, 00229968, 18F86668) 00229528 18F8863A (011E1E08, 19338CEB, 00F72488, ) 00229968 18F86668 (011E1E08, 0002, 00229B0C, 0003) 00229988 1913B9C6 (011E1E08, 00F72370, 0005, 00229B00) 00229B38 1913F0F2 (011EB1D0, 00F72370, 0003, 00229B50) 00229BB8 19143F88 (011EB2F0, 00F72370, 0003, 00F74690) 00229C48 19145650 (00F72370, 0003, 00F74690, ) 00229EF8 191671D3 (00F72370, 011F29A8, 0010, 1915C357) 00229F28 1916AC4C (00F72370, 011F29A8, 0005, ) 0022A1D8 19167463 (00F72370, 0116D2A0, 0022A208, 1916B2FC) 0022A208 1916AC4C (00F72370, 00F7B320, 00F7CF40, 0001) 0022A5D8 19160E78 (00F861F8, 00F72370, 0005, 0022A600) 0022A668 191610F5 (00F861F8, 00F72370, 0005, 0022A720) End of stack trace (more stack frames may be present) I tried to solve this problem by following the instructions in the link listed below and provided by Mr Rehmani. http://article.gmane.org/gmane.network.simulator.isi/2766/match=segmentation +fault but I got the following lines $ gdb -c core GNU gdb 6.8.0.20080328-cvs (cygwin-special) Copyright (C) 2008 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/g This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type show cop and show warranty for details. This GDB was configured as i686-pc-cygwin. /home/KiKoLoCo/ns-allinone-2.33/ns-2.33/core: No such file or directo (gdb) gdb -c core Undefined command: gdb. Try help. (gdb) file ns Reading symbols from /home/KiKoLoCo/ns-allinone-2.33/ns-2.33/ns.exe.. ing symbols found)...done. (gdb) bt No stack. (gdb) select 0 No registers. (gdb) Note that at compiling other .tcl files everything works out. I attached the compiled file, you may probably see the problem. Thank you very much in advance. Dan
[ns] logic error at handleTXTimer in ns-2.33
Dear all, I have installed the ns-allinone-2.33 and patched it with the 80211Ext (updated October 21st, 2008) following the instruction from http://dsn.tm.uni-karlsruhe.de/english/Overhaul_NS-2.php. But when validating, the program reports as following: --- validata overall report: some portable tests failed: ./test-all-wireless-lan-newnode-80211Ext some non-portable tests also failed: ./test-all-smac-multihop ./test-all-simulataneous ./test-all-wireless-tdma to return a specific test, cd tcl/test; ./test-all-TEST-NAME when I run a .tcl scripts using the 80211Ext MAC and PHY, such as, set val(netif) Phy/WirelessPhyExt set val(mac)Mac/802_11Ext it reports: - Starting Simulation... channel.cc:sendUp - Calc highestAntennaZ_ and distCST_ highestAntennaZ_ = 1.5, distCST_ = 18883.9 SORTING LISTS ...DONE! L 0.00243737 0 MAC PHYBusyInd L 0.00243757 0 MAC PHYBusyInd L 0.00243761 0 MAC PHYBusyInd L 0.00243858 0 MAC PHYBusyInd L 0.00243943 0 MAC PHYBusyInd L 0.00243944 0 MAC PHYBusyInd L 0.00243989 0 MAC PHYBusyInd L 0.00247737 0 MAC RxStartInd L 0.00247757 0 MAC RxStartInd L 0.00247761 0 MAC RxStartInd L 0.00247858 0 MAC RxStartInd L 0.00247943 0 MAC RxStartInd L 0.00247944 0 MAC RxStartInd L 0.00247989 0 MAC RxStartInd logic error at handleTXTimer L 0.00264537 0 MAC PHYIdleInd L 0.00264537 0 MAC RxEndInd SUCC Segmentation fault (core dumped) -- who can help me how to tackle this problem? I am very grateful with tears. CharlieZhang
[ns] Passing arguments when creating a TCPAgent in .tcl file
There is an instproc init {} procedure each for Agent and for Agent/TCPAgent.
I could not find the instproc init {} procedure of Agent/TCP/Reno or any of the
other TCP Agents.
Why?
Is it because they inherit in a virtual way from class TCPAgent?, and so the
instproc init {} procedure of the class TCPAgent is called only once for each
of them.
Then how do we differentiate between the creation of the different TCPAgents
from only one instproc init {} procedure of class TCPAgent.
My main objective is to pass arguments to the new Agent/TCP/Reno command which
will pass the arguments to its respective init procedure (which I cannot find)
and then the arguments will be passed to its static class constructor in the
tcp-reno.cc file so i can choose whether or not to pass an argument to the
constructor of the actual class RenoTcpAgent.
The main idea is to add one more constructor to class RenoTcpAgent and then to
be able to choose which constructor to call when creating the object from the
tcl script like set tcpreno [new Agent/TCP/Reno].
So i thought i would do it by passing an argument like set tcpreno [new
Agent/TCP/Reno arg1].
Any help, advice or suggestions for the above problem, or achieving a solution
of some kind will be appreciated.
Many thanks in advance.
Pankaj
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