OpenNebula

            var last_time = "0";

            var mon_data = host_monitoring_data[this.HOST.ID][metrics[i]];

            if (mon_data.length > 0){

                last_time = mon_data[ mon_data.length-1 ][0];

            // If the refresh is too frecuent, ignore it

            if (now > last_time + 59){

                // The first time the pool is retrieved we add another point

                // to show something in the dashboard as soon as the user

                // logs in

                if (empty){

                    mon_data.push(

                        [now - 60, this.HOST.HOST_SHARE[metrics[i]]] );

                }

                mon_data.push(

                    [now, this.HOST.HOST_SHARE[metrics[i]]] );

            }