hi,
Because of inconsistencies in the trace format, sometimes the node id
is given in a hierarchical way (eg, 0.0.1) and other times in a
decimal way (hierarchical addresses normally allocate bits as
10.11.11, so 1.0.1 becomes 4194305). It's generally simplest to have a
look through your trace file and figure out which id is being given to
which node under which circumstances. (eg., sending from a wired node
to a wired node seems to result in hierarchical addresses, but
receiving at a wireless node seems to result in the confusing decimal
format). Here's what I use for calculating loss, it should get you
started and make calculating throughput and delay easier.
#
#Hierarchical routing is used with bits allocated as 10.11.11, #
#addresses must be converted#
#0.0.0 = 0 (our server node) #
#1.0.0 = 4194304(our Access point node) #
#1.0.1 = 4194305(our destination node) #
#
BEGIN{totaltime=input;}
/^+/ /0.0.0.0/ /1.0.1.0/ /Multimedia/{
wtimefield=2
wpacketidfield=12
loss[int($wtimefield)]++;
packet[$wpacketidfield]=1;
}
/^r/ / -Is 0.0/ / -Id 4194305.0/ /AGT/ /Multimedia/ {
if(timefield==0 ||packetidfield==0) {
for(i=1; i=NF; i++) {
if($i==-t)
timefield=i+1;
if($i==-Ii)
packetidfield=i+1;
}
}
loss[int($timefield)]--;
packet[$packetidfield] = 0;
}
END{
for(i=0;itotaltime;i++)
print i loss[i]*1000*8;
}
Good Luck,
David McMullin
Dublin City University.
2009/8/15 Oladapo Oluwadiya ooluwad...@yahoo.com:
hello,
does anyone have the awk script to calculate delay,throughput,packet loss in
a mixed scenario i.e. wired-wireless scenario?
i will really appreciate it.
regards.
