script for watching kvm_stat

I added the kvm_stat support to ppc to watch my guest while executing e.g. to check things like "what does my guest do when I see nothing" ;-) To be able to do that I also needed a script that reports in a iostat/vmstat like style, because of that I wrote a small shell script. Additionally my colleague Christian Bornträger had the need for a top style output and wrote a script for that need.
I attached both to help everyone experimenting with kvm_stat.

They are just small helpers and might still contain issues, feel free to comment, correct, whatever ;-)

Grüsse / regards, Christian Ehrhardt
IBM Linux Technology Center, Open Virtualization

#!/bin/bash

kvmstatdir="/sys/kernel/debug/kvm"
duration=2
summode="no"
lph=20
line=-1
if [ $summode = "no" ]
then
declare -a values
counter=0
for i in ls $kvmstatdir
do
values[$counter]=0
counter=expr $counter + 1
done
fi

kvmstat_header() {
	for i in `ls $kvmstatdir`
	do
		printf "|%16s " $i
	done
	printf "|\n"
}

USAGE="Usage: basename $0 [-d arg] [-l arg] [-hs]" while getopts hvsd:l: OPT; do

    case "$OPT" in
	h)	echo $USAGE
		echo "d - sleep between reported lines"
		echo "l - number of lines betweeen headers"
		echo "s - summary mode (default is difference since last print)"
		exit 0
		;;
	v)	echo "`basename $0` version 0.1"
		exit 0
		;;
	d)	duration=$OPTARG
		;;
	l)	lph=$OPTARG
		;;
	s)	summode="yes"
		;;
	\?)	# getopts issues an error message
		echo $USAGE >&2
		exit 1
		;;
    esac

done

while true
do

	line=`expr $line + 1`
	line=`expr $line % $lph`
	if [ $line -eq "0" ]
	then
		kvmstat_header
	fi

	counter=0
	for i in `ls $kvmstatdir`
	do
		val=`cat $kvmstatdir/$i`
		if [ $summode = "no" ]
		then
			cval=$val;
			val=`expr $cval - ${values[$counter]}`
			values[$counter]=$cval
			counter=`expr $counter + 1`	
		fi
        	printf "|%16d " $val
	done
	printf "|\n"

	sleep $duration

done

#!/bin/bash
watch --differences -n 1 " kvmtop_once | sort -n -r"

#!/bin/bash
cd /sys/kernel/debug/kvm
for d in *
do
cat $d | tr -d \\n
echo -e :\\t $d

done

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Are you aware of the kvm_stat python script in kvm-userspace.git?

error compiling committee.c: too many arguments to function


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Defy all challenges. Microsoft(R) Visual Studio 2008.
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