From eacbf5bb4d57af21c731f41251015d3b991ad490 Mon Sep 17 00:00:00 2001
From: guest <guest@cba7306a-a4a0-4afd-bcb4-bd19f8a24309>
Date: Fri, 30 Nov 2007 13:41:25 +0000
Subject: final version, initial import

git-svn-id: svn+ssh://mecka.net/home/svn/rtcorba-thesis@1 cba7306a-a4a0-4afd-bcb4-bd19f8a24309
---
 cdrom/tools/latencies.sh | 143 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 143 insertions(+)
 create mode 100755 cdrom/tools/latencies.sh

(limited to 'cdrom/tools/latencies.sh')

diff --git a/cdrom/tools/latencies.sh b/cdrom/tools/latencies.sh
new file mode 100755
index 0000000..19d123b
--- /dev/null
+++ b/cdrom/tools/latencies.sh
@@ -0,0 +1,143 @@
+#!/bin/bash
+#
+# Simple bash script for parsing and evaluating a CSV file
+# (C) 2006 Jan Altenberg <tb10alj@tglx.de>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License Version
+# 2 as published by the Free Software Foundation.
+
+GNUPLOT=`which gnuplot`
+
+split_values ()
+{
+	if [ "$2" = "save_old_state" ]
+	then
+		OLD_TIME=$TIME
+		OLD_CH1=$CH1
+		OLD_CH2=$CH2
+		TIME=`echo $1 | cut -f1 -d,`
+		CH1=`echo $1  | cut -f2 -d,`
+		CH2=`echo $1  | cut -f3 -d,`
+	else
+		TIME=`echo $1 | cut -f1 -d,`
+		CH1=`echo $1  | cut -f2 -d,`
+		CH2=`echo $1  | cut -f3 -d,`
+	fi
+}
+
+# We need to convert the TIME value in a format which is readable by bc ;-(
+# 1e-04 -> 1 / (10^4)
+# 1e+04 -> 1 * (10^4)
+convert_time_value ()
+{
+	VALUE=`echo $1 | sed 's/e-\(.*\)$/\/(10\^\1)/g' | sed 's/e+\(.*\)$/*(10^\1)/'`
+	echo $VALUE
+}
+
+print_help ()
+{
+	echo "Usage: $0 -f CSV-file -p PLOT-file"
+	echo "  -f CSV-file  (where your data is stored)"
+	echo "  -p PLOT-file (where the plot image will be stored)"
+}
+
+# Parsing command line options
+while getopts "f:p:v" OPTION
+do
+	case $OPTION in 
+		f	) FILE=$OPTARG;;
+		p	) PLOT_FILE=$OPTARG;;
+		v	) VERBOSE="ON";;
+		*	) print_help; exit 1;;
+	esac
+done
+
+if [ ! "$FILE" ]
+then
+	print_help
+	exit 1
+fi
+
+if [ ! -e $FILE ]
+then
+	echo "Input file does not exist!"
+	exit 1
+fi
+
+if [ ! "$PLOT_FILE" ]
+then
+	print_help
+	exit 1
+fi
+
+if [ ! "$GNUPLOT" ]
+then
+	echo "Please install gnuplot ! !"
+	exit 1
+fi
+
+TMPFILE=/tmp/latencies_$$
+RESULT_TMPFILE=/tmp/latencies_results_$$
+
+echo "Parsing CSV file..."
+echo "  Removing table head..."
+cat $FILE | sed '/.*TIME.*/d' > $TMPFILE
+
+echo "  Seperating values..."
+for LINE in $(cat $TMPFILE)
+do
+	if [ ! "$TIME_START" ]
+	then
+		if [ ! "$TIME" ]
+		then
+			split_values $LINE
+			continue
+		else
+			split_values $LINE "save_old_state"
+			if [ "`echo "scale=2; $CH1 - $OLD_CH1" | bc`" != "0" ]
+			then
+				TIME_START=`convert_time_value $TIME`
+				TIME=""
+			else
+				continue
+			fi
+		fi
+	else
+		split_values $LINE "save_old_state"
+		if [ "`echo "scale=2; $CH2 - $OLD_CH2" | bc`" != "0" ]
+		then
+			TIME_END=`convert_time_value $TIME`
+			[ "$VERBOSE" = "ON" ] && echo "    Found latency -> $TIME_END - $TIME_START"
+			echo "scale=10; ($TIME_END - $TIME_START)" | bc | sed 's/^\./0\./' >> $RESULT_TMPFILE
+			TIME_START=""
+			TIME_END=""
+			TIME=""
+		else
+			continue
+		fi
+	fi
+done
+
+echo "Generating plot..."
+cat $RESULT_TMPFILE | sort -n | uniq -c | sed 's/^ *//' | sed s'/0*$//'> $TMPFILE
+cp $TMPFILE $RESULT_TMPFILE
+
+XMAX=`cat $RESULT_TMPFILE | cut -f2 -d' ' | sort -rn | head -n1`
+YMAX=`cat $RESULT_TMPFILE | cut -f1 -d' ' | sort -rn | uniq | head -n1`
+XRANGE=`expr "$XMAX * 2"`
+YRANGE=`expr "$YMAX * 2"`
+
+echo "  XMAX $XMAX"
+echo "  YMAX $YMAX"
+
+echo -e "set title \"Latency test\"\n\
+set terminal pbm color\n\
+set xrange [0:$XRANGE]\n\
+set yrange [0:$YRANGE]\n\
+set ylabel\"n\"\n\
+set style fill solid 0.250000 border\n\
+set output \"$PLOT_FILE\"
+plot \"$RESULT_TMPFILE\" using 2:1 \"%lf%lf\" notitle with boxes" | gnuplot -persist
+
+display $PLOT_FILE
-- 
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