Energy-Efficient Cloudlet Management for Privacy Preservation in Wireless Metropolitan Area Networks

Algorithm 3

VM scheduling strategy confirmation.

Input: The running cloudlet set ; VM occupation record

   VM occupation record

Output: The migration composition collection

Sort the cloudlets in the decreasing order of idle VMs

, ,

  while  do

  Get the running VM list in

  Get the hosting task list in

  for each hosted task do

     Get the number of occupied VMs

    Select the destination cloudlet by Algorithms 1 and 2

    end for

   if all the VMs can be migrated away then

   Generate a migration composition

(12)   Update the cloudlet status and VM distribution

(13)  else=1

(14)   Delete the temporal migration strategies

(15)  end if

(16)   ,

(17) end while

(18) for the reserved tasks’ records do

(19)

(20) end for

(21) for to K  do

(22)  Add ~ as a migration composition to

(23)  Get the start time and time of each migration task

(24)   - t

(25)  

(26)  Update the start time and duration time in

(27)  Update task storage record

(28) end for

(29) Return