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/* Copyright (c) 2014-2018. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
package cloud.migration;
import java.util.ArrayList;
import java.util.List;
import org.simgrid.msg.Host;
import org.simgrid.msg.HostFailureException;
import org.simgrid.msg.HostNotFoundException;
import org.simgrid.msg.Msg;
import org.simgrid.msg.MsgException;
import org.simgrid.msg.Process;
import org.simgrid.msg.VM;
public class Test extends Process{
Test(String hostname, String name) throws HostNotFoundException {
super(hostname, name);
}
public void doMigration(VM vm, Host src, Host dst) throws HostFailureException{
Msg.info(" - Launch migration from "+ src.getName() +" to " + dst.getName());
double startTime = Msg.getClock();
vm.migrate(dst);
double endTime = Msg.getClock();
Msg.info(" - End of Migration from "+ src.getName() +" to " + dst.getName()+ " (duration:" +
(endTime-startTime)+")");
}
public void main(String[] strings) throws MsgException {
Host host0 = Host.getByName("PM0");
Host host1 = Host.getByName("PM1");
List<VM> vms = new ArrayList<>();
/* Create VM1 */
int dpRate = 70;
int load1 = 90;
int load2 = 80;
Msg.info("This example evaluates the migration time of a VM in presence of collocated VMs on the source and "
+ "the dest nodes");
Msg.info("The migrated VM has a memory intensity rate of 70% of the network BW and a cpu load of 90% \" "
+"(see cloudcom 2013 paper \"Adding a Live Migration Model Into SimGrid\" for further information) ");
Msg.info("Load of collocated VMs fluctuate between 0 and 90% in order to create a starvation issue and see "
+ "whether it impacts or not the migration time");
XVM vm1 = new XVM(host0, "vm0",
2048, // Ramsize,
125, // Net bandwidth,
dpRate // Memory intensity
);
vms.add(vm1);
vm1.start();
/* Collocated VMs */
int[] vmSrcLoad = {
80,
0,
90,
40,
30,
90,
};
XVM tmp;
for (int i=1 ; i<= vmSrcLoad.length ; i++){
tmp = new XVM(host0, "vm"+i,
2048, // Ramsize,
125, // Net bandwidth,
dpRate // Memory intensity
);
vms.add(tmp);
tmp.start();
tmp.setLoad(vmSrcLoad[i-1]);
}
int[] vmDstLoad = {
0,
40,
90,
100,
0,
80,
};
for (int i=1 ; i <= vmDstLoad.length ; i++){
tmp = new XVM(host1, "vm"+(i+vmSrcLoad.length),
2048, // Ramsize,
125, // Net bandwidth,
dpRate // Memory intensity
);
vms.add(tmp);
tmp.start();
tmp.setLoad(vmDstLoad[i-1]);
}
Msg.info("Round trip of VM1 (load "+load1+"%)");
vm1.setLoad(load1);
doMigration(vm1, host0, host1);
doMigration(vm1, host1, host0);
Msg.info("");
Msg.info("");
Msg.info("Round trip of VM1 (load "+load2+"%)");
vm1.setLoad(load2);
doMigration(vm1, host0, host1);
doMigration(vm1, host1, host0);
Main.setEndOfTest();
Msg.info("Forcefully destroy VMs");
for (VM vm: vms)
vm.destroy();
}
}
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