Algorithm 1: RUA placement.
1:	Input: candidate_hostList,vmList Output: migrationSched
2:	for each: vm in vmList do
3:	allocatedHost ← NULL
4:	CPURequired ← vm.getCPUrequired()
5:	for each: host in hostList do
6:	if host has enough resource for vm then
7:	CPUratio ← CPURequired/host.getTotalCPU()
8:	if $\frac{U_{cpu}}{N}>y$ then
9:	if CPUratio < $\frac{U_{cpu}}{N}$ then
10:	allocatedHost ← host
11:	end if
12:	else then
13:	if CPUratio > = $\frac{U_{cpu}}{N}$ then
14:	allocatedHost ← host
15:	end if
16:	end if
17:	end for
18:	if allocatedHost ≠ NULL then
19:	migrationSched.add(vm,allocatedHost)
20:	else then
21:	migrationSched.add(PABFD(vm,allocatedHost))
22:	end if
23:	end for
24:	return migrationSched