I think clouds pay a huge abstraction penalty to allow tiny VMs. I guess it helps with onboarding and $10 personal VPNs. But I have never needed a fraction of a computer. I want to rent some number of full computers of various sizes, consisting of CPU, memory, and flash disk. Hetzner is closer than AWS, and I think/hope that’s what Crawshaw is aiming for.

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phrotoma 6 hours ago | parent | next [-]

Allow? I understood tiny VM's to be something (at least AWS) added to try to squeeze more utilization out of idle hardware.

	▲	tlb 5 hours ago \| parent [-]
		I understand the appeal from AWS's perspective. Customer A pays for a 32 vCPU VM, which they run on 32-core hardware. Then they can also squeeze in customer B's 1 vCPU instance running a blog, and no one notices. Free money! But I don't want to be either of those customers. It means the whole system has an extra layer of abstraction, so they can juggle VMs around. It's why you need slow EBS instead of just getting a flash drive in the same case as the CPU, with 0.01x the latency.

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ButlerianJihad 6 hours ago | parent | prev [-]

The key to renting a fraction of a computer is scaling up. If I can rent 1/8th of a computer, I can also rent 3/8ths and 1/2 and then go to a full computer, if that capacity is necessary.

The key to scaling up is to have big-enough hardware on the backend. If Hetzner is renting out bare metal instances then they can only rent out the sizes that they have. If a cloud provider invests in really big single systems, they can offer fractions of those systems to multiple tenants, some of whom scale up to use the entire system, and some who don't. I think that is a win-win.

A fractional VM is also a fungible VM. If the tenant calls to spin up a certain size VM, then the backend can find suitable hardware for it from a menu of sizes. Smaller VMs can slot in anywhere there is room, not just on a designated bare-metal system.

A cloud provider is always going to want to maximize their rack space, wattage/heat, and resource usage. So they will invest in high-density systems at every chance. On the other hand, cloud tenants will have diverse needs, including some fraction of those big computers.