adjusting utilization model uneven to always absolute

cloudsim-plus-examples/nullcloudlets-tight0-loose1-hostIops500-slaMinIops100-slaLowAvail99.0-VmsNumber1-cloudletsNumber1-cloudletsTotalIops1000-vmIops100-migration10.csv

+cloudlet-id,status,datacenter-id,host-id,host-pes-cpu-cores,vm-id,vm-pes-cpu-cores,cloudlet-len-mi-cpu,cloudlet-len-mi-iops,cloudlet-iops-fragmentation,cloudlet-pes-cpu-cores,start-time-secs,finish-time-secs,exec-time-secs
+0,SUCCESS,1,0,160,0,1,1,1000,63.66542801502484,1,10.0,40.032,31

cloudsim-plus-examples/nullcloudlets-tight1-loose0-hostIops500-slaMinIops100-slaLowAvail99.0-VmsNumber1-cloudletsNumber1-cloudletsTotalIops1000-vmIops100-migration10.csv

+cloudlet-id,status,datacenter-id,host-id,host-pes-cpu-cores,vm-id,vm-pes-cpu-cores,cloudlet-len-mi-cpu,cloudlet-len-mi-iops,cloudlet-iops-fragmentation,cloudlet-pes-cpu-cores,start-time-secs,finish-time-secs,exec-time-secs
+0,SUCCESS,1,0,160,0,1,1,1000,67.8128758955171,1,10.0,970.9619999999993,961

cloudsim-plus-examples/nullsla-tight0-loose1-hostIops500-slaMinIops100-slaLowAvail99.0-VmsNumber1-cloudletsNumber1-cloudletsTotalIops1000-vmIops100-migration10.csv

+time,cloudlet-id,current-sla-violation,cumulative-sla-violation,vm-credit,
+0,0,0,0,0.0

cloudsim-plus-examples/nullsla-tight1-loose0-hostIops500-slaMinIops100-slaLowAvail99.0-VmsNumber1-cloudletsNumber1-cloudletsTotalIops1000-vmIops100-migration10.csv

+time,cloudlet-id,current-sla-violation,cumulative-sla-violation,vm-credit,
+0,0,0,0,0.0
+60,0,0,0,-0.26262626262626265
+120,0,0,0,-0.8080808080808078
+180,0,0,0,-1.3535353535353536
+240,0,0,0,-1.8989898989899
+300,0,0,0,-2.444444444444445
+360,0,0,0,-2.98989898989899
+420,0,0,0,-3.535353535353535
+480,0,0,0,-4.08080808080808
+540,0,0,0,-4.626262626262625
+600,0,0,0,-5.17171717171717
+660,0,0,0,-5.717171717171715
+720,0,0,0,-6.26262626262626
+780,0,0,0,-6.808080808080805
+840,0,0,0,-7.35353535353535
+900,0,0,0,-7.898989898989895
+960,0,0,0,-8.444444444444445

cloudsim-plus-examples/src/main/java/org/cloudbus/cloudsim/examples/autonomic/simulations/SlaExploitationSimulation.java

@@ -100,8 +100,8 @@ public class SlaExploitationSimulation {
 	
 	public static void main(String[] args) {
 		//PATH = args[0];
-		SLA_TIGHT_HOSTS = 1;
-		SLA_LOOSE_HOSTS = 0;
+		SLA_TIGHT_HOSTS = 0;
+		SLA_LOOSE_HOSTS = 1;
 		HOST_IOPS = 500;
 		MINIMUM_IOPS = 100;
 		LOW_AVAILABILITY = 99;
@@ -226,7 +226,7 @@ public class SlaExploitationSimulation {
 		final List<Vm> list = new ArrayList<Vm>(VMS);
 		for (int i = 0; i < VMS; i++) {
 			Vm vm = new VmSimple(i, VM_MIPS, VM_PES).setRam(VM_RAM).setBw(VM_BW).setSize(VM_STORAGE)
-					.setIops(VM_IOPS).setCloudletScheduler(new CloudletSchedulerSpaceShared());
+					.setIops(VM_IOPS).setCloudletScheduler(new CloudletSchedulerTimeShared());
 			vm.setContract(contract);
 			list.add(vm);
 		}

cloudsim-plus/src/main/java/org/cloudbus/cloudsim/schedulers/cloudlet/CloudletSchedulerAbstract.java

@@ -660,7 +660,7 @@ public abstract class CloudletSchedulerAbstract implements CloudletScheduler {
             final long requested = (long)getCloudletIopsAbsoluteUtilization(cloudlet);
             if(requested > iops.getAvailableResource()){
                 Log.printFormattedLine(
-                    "%.2f: %s: %s requested %d MB of RAM but just %d was available and allocated to it.",
+                    "%.2f: %s: %s requested %d MB of IOPS but just %d was available and allocated to it.",
                     vm.getSimulation().clock(), getClass().getSimpleName(), cloudlet, requested, iops.getAvailableResource());
             }
             iops.allocateResource(Math.min(requested, iops.getAvailableResource()));

cloudsim-plus/src/main/java/org/cloudbus/cloudsim/utilizationmodels/UtilizationModelUneven.java

@@ -42,6 +42,7 @@ public class UtilizationModelUneven extends UtilizationModelAbstract {
 		setUpperLimit(upper_limit);
 		setHistory(new HashMap<Double, Double>());
 		setProbGenerator(new UniformDistr(0, 1, seed));
+		this.setUnit(Unit.ABSOLUTE);
 	}
 
 	/*