source: DCWoRMS/branches/coolemall/src/test/ariel/CPUFreqScalingExecTimeEstimationPlugin.java @ 1084

package test.ariel;

import java.util.Map;

import schedframe.events.scheduling.SchedulingEvent;
import schedframe.resources.computing.Processor;
import schedframe.resources.units.PEUnit;
import schedframe.resources.units.ProcessingElements;
import schedframe.resources.units.ResourceUnit;
import schedframe.resources.units.ResourceUnitName;
import schedframe.resources.units.StandardResourceUnitName;
import dcworms.schedframe.scheduling.ExecTask;
import example.timeestimation.BaseTimeEstimationPlugin;

public class CPUFreqScalingExecTimeEstimationPlugin extends BaseTimeEstimationPlugin{

        public double execTimeEstimation(SchedulingEvent event, ExecTask task,
                        Map<ResourceUnitName, ResourceUnit> allocatedResources,
                        double completionPercentage) {

                PEUnit peUnit = (PEUnit) allocatedResources.get(StandardResourceUnitName.PE);

                double speed;
                if(peUnit instanceof ProcessingElements){
                        ProcessingElements pe = (ProcessingElements)peUnit;
                        Processor cpu = (Processor)pe.get(0);
                        speed = cpu.getPowerInterface().getPState().getFrequency()/1000;
                }
                else 
                        speed = peUnit.getSpeed();
                
                int cnt = peUnit.getUsedAmount();

                double remainingLength = task.getLength() * (1 - completionPercentage/100);

                double execTime = (remainingLength / (cnt * speed));

                if (Double.compare(execTime, 0.001) < 0) {
                        execTime = 0.001;
                }

                execTime = Math.ceil(execTime);
                return execTime;
        }

}