Difference between revisions of "Tshark: Mengukur Jitter"

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(New page: tshark -nr rtp.pcap -q -z rtp,streams The output will also show jitter values. ==Referensi== * https://ask.wireshark.org/questions/12637/is-it-possible-to-analyze-jitter-from-the...)
 
 
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−
 
 
     tshark -nr rtp.pcap -q -z rtp,streams
 
     tshark -nr rtp.pcap -q -z rtp,streams
  
 
The output will also show jitter values.
 
The output will also show jitter values.
 +
 +
 +
 +
#!/bin/bash
 +
 +
if [ -z $1 ]
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then
 +
  echo "[+] $0 capture.pcap"
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  exit
 +
fi
 +
 +
if [ ! -z $2 ]
 +
then
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  limit=$2
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else
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  limit=0
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fi
 +
 +
#tshark -r $1 | grep "1.1.1.1 -> 1.1.1.2" | grep -v "ICMP"| grep -i "\[Data\] Seq\|UDP\|TCP" | awk '{if(NR==1){f=$2;s=$2};print ($2-f),($2-s)*1000;s=$2;}' > jitter.tmp
 +
tshark -r $1 | grep "1.1.1.1 -> 1.1.1.2" | grep -v "ICMP"| grep -i "\[Data\|UDP\|TCP" | awk '{if(NR==1){f=$2;s=$2};print ($2-f),($2-s)*1000;s=$2;}' > jitter.tmp
 +
 +
#cat jitter.tmp | awk '{ k=$2-s ; if(($2-s)<0){k=($2-s)*(-1)} ; t=t+k ; print $1,$2-s,t/NR ; s=$2}' > jitter.txt ## mixed
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cat jitter.tmp | awk -v l=$limit '{ k=$2-s ; if(($2-s)<0){k=($2-s)*(-1)} ; t=t+k ; if(k>l){print $1,k,t/NR}; s=$2}' > jitter.txt ## all positive
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 +
avg=`tail -n1 jitter.txt | awk '{print $3}'`
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echo 'set data style points' > jitter.gp
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echo 'set nogrid' >> jitter.gp
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echo 'set style line 1 lt 1 lw 2' >> jitter.gp
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echo 'set style line 2 lt 2 lw 2' >> jitter.gp
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echo 'set style line 3 lt 3 lw 5' >> jitter.gp
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echo 'set style line 4 lt 3 lw 1' >> jitter.gp
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echo 'set style line 5 lt 3 lw 2' >> jitter.gp
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echo 'set style line 6 lt 3 lw 1' >> jitter.gp
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echo 'set style line 7 lt 17 lw 2' >> jitter.gp
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echo 'set style line 8 lt 17 lw 4' >> jitter.gp
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echo '#set logscale y' >> jitter.gp
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echo '#set xrange[1:180]' >> jitter.gp
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echo '#set yrange[1:2]' >> jitter.gp
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echo '#set samples 2000' >> jitter.gp
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echo '#set xtics 50' >> jitter.gp
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echo '#set ytics 50' >> jitter.gp
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echo 'set xlabel  "Time (sec)"' >> jitter.gp
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echo 'set ylabel  "Kbit/s"' >> jitter.gp
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echo 'plot "jitter.txt" using 1:($2/1) title "jitter ('$avg'ms)" with impulses ls 6' >> jitter.gp
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echo '#plot "jitter.txt" using 1:($2/1) title "jitter ('$avg'ms)" with lines ls 6' >> jitter.gp
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echo '#replot "jitter.txt" using 1:($3/1) title "cumul jitter ('$avg'ms)" with lines ls 8' >> jitter.gp
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 +
echo 'set encoding iso_8859_1' >> jitter.gp
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echo 'set term post color "Helvetica" 18' >> jitter.gp
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echo 'set output "jitter.eps"' >> jitter.gp
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echo 'replot' >> jitter.gp
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 +
echo 'set term png' >> jitter.gp
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echo 'set output "jitter.png"' >> jitter.gp
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echo 'replot' >> jitter.gp
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 +
gnuplot jitter.gp 2>&1 1>/dev/null
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qiv jitter.png &
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 +
  
  
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* https://ask.wireshark.org/questions/12637/is-it-possible-to-analyze-jitter-from-the-captured-pcap-file
 
* https://ask.wireshark.org/questions/12637/is-it-possible-to-analyze-jitter-from-the-captured-pcap-file
 +
* http://babilonline.blogspot.de/2008/05/jitter.html
 +
* http://babilonline.blogspot.com/2008/05/jitter.html#ixzz3bZSaHnXy

Latest revision as of 05:54, 30 May 2015

   tshark -nr rtp.pcap -q -z rtp,streams

The output will also show jitter values. 


#!/bin/bash

if [ -z $1 ]
then
 echo "[+] $0 capture.pcap"
 exit
fi

if [ ! -z $2 ]
then
 limit=$2
else
 limit=0
fi

#tshark -r $1 | grep "1.1.1.1 -> 1.1.1.2" | grep -v "ICMP"| grep -i "\[Data\] Seq\|UDP\|TCP" | awk '{if(NR==1){f=$2;s=$2};print ($2-f),($2-s)*1000;s=$2;}' > jitter.tmp
tshark -r $1 | grep "1.1.1.1 -> 1.1.1.2" | grep -v "ICMP"| grep -i "\[Data\|UDP\|TCP" | awk '{if(NR==1){f=$2;s=$2};print ($2-f),($2-s)*1000;s=$2;}' > jitter.tmp

#cat jitter.tmp | awk '{ k=$2-s ; if(($2-s)<0){k=($2-s)*(-1)} ; t=t+k ; print $1,$2-s,t/NR ; s=$2}' > jitter.txt ## mixed
cat jitter.tmp | awk -v l=$limit '{ k=$2-s ; if(($2-s)<0){k=($2-s)*(-1)} ; t=t+k ; if(k>l){print $1,k,t/NR}; s=$2}' > jitter.txt ## all positive

avg=`tail -n1 jitter.txt | awk '{print $3}'` 

echo 'set data style points' > jitter.gp
echo 'set nogrid' >> jitter.gp

echo 'set style line 1 lt 1 lw 2' >> jitter.gp
echo 'set style line 2 lt 2 lw 2' >> jitter.gp
echo 'set style line 3 lt 3 lw 5' >> jitter.gp
echo 'set style line 4 lt 3 lw 1' >> jitter.gp
echo 'set style line 5 lt 3 lw 2' >> jitter.gp
echo 'set style line 6 lt 3 lw 1' >> jitter.gp
echo 'set style line 7 lt 17 lw 2' >> jitter.gp
echo 'set style line 8 lt 17 lw 4' >> jitter.gp

echo '#set logscale y' >> jitter.gp
echo '#set xrange[1:180]' >> jitter.gp
echo '#set yrange[1:2]' >> jitter.gp
echo '#set samples 2000' >> jitter.gp
echo '#set xtics 50' >> jitter.gp
echo '#set ytics 50' >> jitter.gp

echo 'set xlabel  "Time (sec)"' >> jitter.gp
echo 'set ylabel  "Kbit/s"' >> jitter.gp

echo 'plot "jitter.txt" using 1:($2/1) title "jitter ('$avg'ms)" with impulses ls 6' >> jitter.gp
echo '#plot "jitter.txt" using 1:($2/1) title "jitter ('$avg'ms)" with lines ls 6' >> jitter.gp
echo '#replot "jitter.txt" using 1:($3/1) title "cumul jitter ('$avg'ms)" with lines ls 8' >> jitter.gp

echo 'set encoding iso_8859_1' >> jitter.gp
echo 'set term post color "Helvetica" 18' >> jitter.gp
echo 'set output "jitter.eps"' >> jitter.gp
echo 'replot' >> jitter.gp

echo 'set term png' >> jitter.gp
echo 'set output "jitter.png"' >> jitter.gp
echo 'replot' >> jitter.gp

gnuplot jitter.gp 2>&1 1>/dev/null
qiv jitter.png &




Referensi

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