Modeling and Analysis of Queueing-Based Vary-On/Vary-Off Schemes for Server Clusters

Algorithm 1

Simulation process.

while   is not empty do

 Retrieve the in the head of and remove it from

 if    then

 else if    then

  while    do

   perform statistic of the activated server nodes

   perform cluster sizing

   do on-off control

  end while

 end if

 find an activated server node with the earliest available time

 calculate the waiting time of this

 calculate the service time of this

 calculate the response time of this

 calculate the consumed energy of the server node

end while