added parser and plotter for dht round trip time distribution

parse_dht_log.py

@@ -23,13 +23,14 @@ for k,v in histogram.items():
 out.close()
 
 out = open('dht_announce_distribution.gnuplot', 'w+')
-out.write('''set term png size 1200,700
+out.write('''
+set term png size 1200,700
 set output "dht_announce_distribution.png"
 set title "bucket # announces are made against relative to target node-id"
 set ylabel "# of announces"
-set style fill solid
-set boxwidth 0.8
-plot  "dht_announce_distribution.dat" using 1:2 title "announces" with boxes''')
+set style fill solid border -1 pattern 2
+plot  "dht_announce_distribution.dat" using 1:2 title "announces" with boxes
+''')
 out.close()
 
 os.system('gnuplot dht_announce_distribution.gnuplot');

parse_dht_rtt.py

@@ -0,0 +1,51 @@
+#!/usr/bin/python
+
+import sys
+import os
+
+quantize = 200
+max_rtt = 10000
+
+f = open(sys.argv[1])
+distribution = {}
+num_messages = 0
+
+for i in range(0, max_rtt, quantize):
+	distribution[i] = 0
+
+for line in f:
+	time = int(line.split('\t')[1])
+	if (time < 0 or time > max_rtt): continue
+	num_messages += 1
+	time /= quantize
+	time *= quantize
+	distribution[time] += 1
+
+f = open('round_trip_distribution.log', 'w+')
+
+for k, v in distribution.items():
+	print >>f, '%f %d' % ((k + (quantize / 2)) / 1000.0, v)
+f.close();
+
+f = open('round_trip_distribution.gnuplot', 'w+')
+
+f.write('''
+set term png size 1200,700
+set title "Message round trip times"
+set terminal postscript
+set ylabel "# of requests"
+set xlabel "Round trip time (seconds)"
+set grid
+set style fill solid border -1 pattern 2
+set output "round_trip_distribution.ps"
+set boxwidth %f
+plot "round_trip_distribution.log" using 1:2 title "requests" with boxes
+
+set terminal png small
+set output "round_trip_distribution.png"
+replot
+''' % (float(quantize) / 1000.0))
+f.close()
+
+os.system('gnuplot round_trip_distribution.gnuplot');
+