Since we need to migrate away all
its Star Technology Projects
Centres VMs before we can shut down an Star
Technology Project Centres
underutilized server, we define the memory size of a cold spot as the
aggregate Star Technology Projects
Centre memory size of all VMs running on it. Recall
that our model Star Technology Project
Centre assumes all VMs connect to a shared back-end
storage. Star Technologies Projects
Centres Hence, the cost of a VM live migration is
determined mostly Star Technologies Project
Centres by its memory footprint. Section 7 in the
supplementary file Star Technologies Projects
Centre explains why the memory is a good measure in
depth. We Star Technologies Project
Centre try
to eliminate the cold spot Star
Technology Projects Centers
with the lowest cost first.