awk scripts for analysis of trace files in ns2
Packet delivery ratio
awk script
BEGIN {
sendLine = 0;
recvLine = 0;
fowardLine = 0;
}
$0 ~/^s.* AGT/ {
sendLine ++ ;
}
$0 ~/^r.* AGT/ {
recvLine ++ ;
}
$0 ~/^f.* RTR/ {
fowardLine ++ ;
}
END {
printf "s:%d r:%d, r/s Ratio:%.4f, f:%d \n", sendLine, recvLine, (recvLine/sendLine),fowardLine;
}
End to end delay
awk script
BEGIN {
seqno = -1;
count = 0;
}
{
if($4 == "AGT" && $1 == "s" && seqno < $6) {
seqno = $6;
}
#end-to-end delay
if($4 == "AGT" && $1 == "s") {
start_time[$6] = $2;
} else if(($7 == "tcp"||$7=="cbr") && ($1 == "r")) {
end_time[$6] = $2;
} else if($1 == "D" && ($7 == "tcp"$7=="cbr") {
end_time[$6] = -1;
}
}
END {
for(i=0; i<=seqno; i++) {
if(end_time[i] > 0) {
delay[i] = end_time[i] - start_time[i];
count++;
}
else
{
delay[i] = -1;
}
}
for(i=0; i<=seqno; i++) {
if(delay[i] > 0) {
n_to_n_delay = n_to_n_delay + delay[i];
}
}
n_to_n_delay = n_to_n_delay/count;
print "\n";
print "Average End-to-End Delay = " n_to_n_delay * 1000 " ms";
print "\n";
}
Control Overhead(Normalized routing overhead)
Note: Add control packets in the (routing packet)conditions as per your protocol
awk script
BEGIN{
recvd = 0;#################### to calculate total number of data packets received
rt_pkts = 0;################## to calculate total number of routing packets received
}
{
##### Check if it is a data packet
if (( $1 == "r") && ( $7 == "cbr" || $7 =="tcp" ) && ( $4=="AGT" )) recvd++;
##### Check if it is a routing packet
if (($1 == "s" || $1 == "f") && $4 == "RTR" && ($7 =="udp" || $7 == "AODV" || $7 =="message" || $7 =="AOMDV" || $7 =="OLSR")) rt_pkts++;
}
END{
printf("##################################################################################\n");
printf("\n");
printf("total no of data packets\t%d\n",recvd);
printf("\ntotal no of routing packets\t%d\n",rt_pkts);
printf(" Normalized Routing Load = %.3f\n", rt_pkts/recvd);
printf("\n");
printf("##################################################################################\n");
}
Throughput
Note: Change packet size as per mentioned in your tcl script
awk script
BEGIN {
recvdSize = 0
startTime = 400
stopTime = 0
}
{
event = $1
time = $2
node_id = $3
pkt_size = $8
level = $4
# Store start time
if (level == "AGT" && event == "s" && pkt_size >= 512) {
if (time < startTime) {
startTime = time
}
}
# Update total received packets' size and store packets arrival time
if (level == "AGT" && event == "r" && pkt_size >= 512) {
if (time > stopTime) {
stopTime = time
}
recvdSize += pkt_size
}
}
END {
printf("Average Throughput[kbps] = %.2f\t\t StartTime=%.2f\tStopTime=%.2f\n",(recvdSize/(stopTime-startTime))*(8/1000),startTime,stopTime)
}
How to apply awk?
awk -f pdr.awk out.tr
Packet delivery ratio
awk script
BEGIN {
sendLine = 0;
recvLine = 0;
fowardLine = 0;
}
$0 ~/^s.* AGT/ {
sendLine ++ ;
}
$0 ~/^r.* AGT/ {
recvLine ++ ;
}
$0 ~/^f.* RTR/ {
fowardLine ++ ;
}
END {
printf "s:%d r:%d, r/s Ratio:%.4f, f:%d \n", sendLine, recvLine, (recvLine/sendLine),fowardLine;
}
End to end delay
awk script
BEGIN {
seqno = -1;
count = 0;
}
{
if($4 == "AGT" && $1 == "s" && seqno < $6) {
seqno = $6;
}
#end-to-end delay
if($4 == "AGT" && $1 == "s") {
start_time[$6] = $2;
} else if(($7 == "tcp"||$7=="cbr") && ($1 == "r")) {
end_time[$6] = $2;
} else if($1 == "D" && ($7 == "tcp"$7=="cbr") {
end_time[$6] = -1;
}
}
END {
for(i=0; i<=seqno; i++) {
if(end_time[i] > 0) {
delay[i] = end_time[i] - start_time[i];
count++;
}
else
{
delay[i] = -1;
}
}
for(i=0; i<=seqno; i++) {
if(delay[i] > 0) {
n_to_n_delay = n_to_n_delay + delay[i];
}
}
n_to_n_delay = n_to_n_delay/count;
print "\n";
print "Average End-to-End Delay = " n_to_n_delay * 1000 " ms";
print "\n";
}
Control Overhead(Normalized routing overhead)
Note: Add control packets in the (routing packet)conditions as per your protocol
awk script
BEGIN{
recvd = 0;#################### to calculate total number of data packets received
rt_pkts = 0;################## to calculate total number of routing packets received
}
{
##### Check if it is a data packet
if (( $1 == "r") && ( $7 == "cbr" || $7 =="tcp" ) && ( $4=="AGT" )) recvd++;
##### Check if it is a routing packet
if (($1 == "s" || $1 == "f") && $4 == "RTR" && ($7 =="udp" || $7 == "AODV" || $7 =="message" || $7 =="AOMDV" || $7 =="OLSR")) rt_pkts++;
}
END{
printf("##################################################################################\n");
printf("\n");
printf("total no of data packets\t%d\n",recvd);
printf("\ntotal no of routing packets\t%d\n",rt_pkts);
printf(" Normalized Routing Load = %.3f\n", rt_pkts/recvd);
printf("\n");
printf("##################################################################################\n");
}
Throughput
Note: Change packet size as per mentioned in your tcl script
awk script
BEGIN {
recvdSize = 0
startTime = 400
stopTime = 0
}
{
event = $1
time = $2
node_id = $3
pkt_size = $8
level = $4
# Store start time
if (level == "AGT" && event == "s" && pkt_size >= 512) {
if (time < startTime) {
startTime = time
}
}
# Update total received packets' size and store packets arrival time
if (level == "AGT" && event == "r" && pkt_size >= 512) {
if (time > stopTime) {
stopTime = time
}
recvdSize += pkt_size
}
}
END {
printf("Average Throughput[kbps] = %.2f\t\t StartTime=%.2f\tStopTime=%.2f\n",(recvdSize/(stopTime-startTime))*(8/1000),startTime,stopTime)
}
How to apply awk?
awk -f pdr.awk out.tr
