HeartbeatReport currentReport = generateReport(domain, currentHourMill);
HeartbeatReport lastReport = generateReport(domain, lastHourMill);
for (Machine lastMachine : lastReport.getMachines().values()) {
String ip = lastMachine.getIp();
Machine currentMachine = currentReport.getMachines().get(ip);
if (currentMachine != null) {
Map<String, double[]> lastHourArguments = generateArgumentMap(lastMachine);
Map<String, double[]> currentHourArguments = generateArgumentMap(currentMachine);