... for ballooning performance. In most cases, using ballooning achieves much better performance compared to using swapping.SinceSPECjbbvirtualmachine’sworkingsetsize(~2.8GB)ismuchsmallerthantheconguredvirtualmachine memory size(4GB),the ... hypervisor intercepts the virtual machine’s memory accesses and allocates host physical memory for the virtual machine on its rst access to the memory. In order to avoid information leaking among ... computed allocation target, which typically happens in memory overcommitment cases, ESX employs a ballooning or swappingmechanismtoreclaim memory fromthevirtualmachine in ordertoreachtheallocationtarget.Whethertouseballooningorto...