## CONTROLLER ##

public function getStats()
	{
		$machine = $this->vmName;
		$passwd = "123456";
		$cmdCpuStat = "echo $passwd | sudo -S virsh domstats $machine --cpu-total | grep 'cpu.time' | cut -f2- -d=";
		$cmdCpuCount = "echo $passwd | sudo -S virsh cpu-stats $machine | grep 'CPU*' | sed -e 's/://' | wc -l";

		$provedPrikaz = $this->volani("$cmdCpuStat");
		$fstStat = stream_get_contents($provedPrikaz);
		sleep(1);
		$provedPrikaz = $this->volani("$cmdCpuStat");
		$scdStat = stream_get_contents($provedPrikaz);

		$provedPrikaz = $this->volani("$cmdCpuCount");
		$cpuCount = stream_get_contents($provedPrikaz);

		$usage = ($scdStat - $fstStat)/10000000/$cpuCount;

		return (int)$usage;
	}

##########
## VIEW ##
<script>
    $(document).ready(function () {

        google.charts.load('current', {packages: ['corechart', 'line']});
        google.charts.setOnLoadCallback(drawBasic);

        var prvni = 0;
        var druha = 0;
        var min;
        var max;
        function drawBasic() {
            var data = new google.visualization.DataTable();
            data.addColumn('number', 'X');
            data.addColumn('number', 'Y');
            var options;
            var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
            //chart.draw(data, options);

            function refreshData() {
                if ((prvni/5) <=30){min = 0;} else {min = prvni/5-30;}
                if ((prvni/5) <=30){max = 30;} else {max = prvni/5;}
                options = {
                    legend: 'none',
                    vAxis: {
                        title: 'Vytíženost (%)',
                        viewWindow: {
                            min: 0,
                            max: 120
                        }
                    },
                    hAxis: {
                        viewWindow: {
                            min: min,
                            max: max
                        }
                    }
                }
                data.addRows([ [prvni/5, druha] ]);
                chart.draw(data, options);
                prvni = prvni + 5;

            }

            function load_data(query) {

                $.ajax({
                    url: "<?php echo base_url(); ?>server/getStats",
                    method: "POST",
                    data: {query: query},
                    success: function (select) {
                        druha = Number(select);
                        refreshData();
                    },
                    error: function () {
                        alert("BAD");
                    }
                })
            }

            setInterval(function () {
                load_data();
                //refreshData();
            }, 2000);
        }
    });
</script>