private Comparator<PolicyStats> makeComparator() {
switch (settings.report().sortBy().toLowerCase()) {
case "policy":
return Comparator.comparing(PolicyStats::name);
case "hit rate":
return Comparator.comparingDouble(PolicyStats::hitRate);
case "hits":
return Comparator.comparingLong(PolicyStats::hitCount);
case "misses":
return Comparator.comparingLong(PolicyStats::missCount);
case "evictions":
return Comparator.comparingLong(PolicyStats::evictionCount);
case "steps":
return Comparator.comparingLong(PolicyStats::operationCount);
case "time":
return Comparator.comparingLong(stats -> stats.stopwatch().elapsed(TimeUnit.NANOSECONDS));
default:
throw new IllegalArgumentException("Unknown sort order: " + settings.report().sortBy());
}
}
/**
* Sort a given list of VMs by descending order of CPU utilization.
*
* @param vmList the vm list to be sorted
* @param currentSimulationTime the current simulation time to get the current CPU utilization for
* each Vm
*/
public static void sortByCpuUtilization(List<? extends Vm> vmList, double currentSimulationTime) {
Comparator<Vm> comparator =
Comparator.comparingDouble(vm -> vm.getTotalUtilizationOfCpuMips(currentSimulationTime));
vmList.sort(comparator.reversed());
}