Resizing memory with balloons and hotplug

In a virtualized environment it is often neces-sary to resize the amount of memory allocated to a particular copy of Linux. There are cur-rently two viable approaches to adding and re-moving memory: memory hotplug and a bal-loon driver. We will compare and contrast how these resizing technologies work indepen-dently, weighing the benefits and drawbacks of each one. We also will show how these two resizing technologies could be used together to provide the best of both worlds.