extract_fields()
{
	typeset field=$1
	case $field
	in
		transactions)
			tr "()" "  " |awk 'BEGIN {count=0.5}/^    transactions:/{ print count" "$3;count++; }'
			;;
		requests)
			tr "()" "  " |awk 'BEGIN {count=0.5}/^    read.write requests:/{ print count" "$4;count++; }'
			;;
		other)
			tr "()" "  " |awk 'BEGIN {count=0.5}/^    other operations:/{ print count" "$4;count++; }'
			;;
		time)
			tr "s()" "   " | awk 'BEGIN {count=0.5}/^    total time:/{ print count" "$3;count++; }'
			;;
		event)
			tr "()" "  " |awk 'BEGIN {count=0.5}/^    total time taken by event execution:/{ print count" "$7;count++; }'
			;;
		min|avg|max)
			tr "s()" "   " | awk 'BEGIN { count=0.5 } /^         '$field':/ { printf "%f %s\n", count, $2; count++; }'
			;;
	esac
}