On AWS Firecracker – but there are other new micro-VM engines around, too
Replacing a sort algorithm in the FreeBSD kernel has improved its boot speed by a factor of 100 or more… and although it's aimed at a micro-VM, the gains should benefit everyone.
in the 1960s: designing OSes specifically to run as guests under another OS. This means building the OS specifically to run inside a VM, and to talk to resources provided by a specific hypervisor rather than to fake hardware.drivers which talk directly to facilities provided by the host hypervisor. In turn, the hypervisor doesn't have to provide an emulated PCI bus, emulated power management, emulated graphics card, emulated network interface cards, and so on.
At the moment, the commercial goal of this is providing"serverless" compute power."Serverless" computing is marketing double-speak, really: of course there really are servers, somewhere in a datacenter. But rather than providing Infrastructure as a Service, the famed IaaS model, this is.
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