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I think it means you can increase the RAM of a VM without shutting it down. With Xen, the VM needs to be rebuilt (a couple of minutes off)
by mtw 16y ago
I think it means you can increase the RAM of a VM without shutting it down. With Xen, the VM needs to be rebuilt (a couple of minutes off)
- blacklife 16y agoMemory ballooning is basically a mechanism for hypervisor to steal pages from the guest and yes, so it allows for over-commitment. Memory balloon driver is present inside the guest and hypervisor communicates how many pages it needs back to the driver. The driver allocates pages and sends it back to the hypervisor.