#!/bin/bash

usage(){
        echo "usage: $0 count device"
}

test(){
export HDTESTDEV=$2
echo Please wait...
echo

echo "Device reads ( hdparm -t $2 ):"
READS=$(for i in `seq $1`; do OUT=$(hdparm -t $2); echo "  "$OUT >&2; echo $OUT; done | awk -F'=' 'BEGIN{c=0;tot=0}/=/{c += 1;tot += $2;}END{print tot/c,"MB/sec"}')

echo " $HDTESTDEV: $READS avg"
echo

echo "Raw device reads ( hdparm -t --direct $2):"
RAWREADS=$(for i in `seq $1`; do OUT=$(hdparm -t --direct $2); echo "  "$OUT >&2; echo $OUT; done | awk -F'=' 'BEGIN{c=0;tot=0}/=/{c += 1;tot += $2;}END{print tot/c,"MB/sec"}')
echo " $HDTESTDEV: $RAWREADS avg"
echo

echo "Cached reads ( hdparm -T $2 ):"
CACHEDREADS=$(for i in `seq $1`; do OUT=$(hdparm -T $2); echo "  "$OUT >&2; echo $OUT; done | awk -F'=' 'BEGIN{c=0;tot=0}/=/{c += 1;tot += $2;}END{print tot/c,"MB/sec"}')
echo " $HDTESTDEV: $CACHEDREADS avg"
echo
echo "$HDTESTDEV: avg for $1 runs: read = $READS raw = $RAWREADS cached = $CACHEDREADS"

}


if [ -z "$1" ]; then usage; exit 1; fi
if [ -z "$2" ]; then usage; exit 1; fi

test $*