That's interesting, but shouldn't containers (e.g.: docker/lxc) be almost as fas... | Hacker News

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emilburzo on Jan 22, 2017 | parent | context | favorite | on: What’s New in Docker 1.13?

That's interesting, but shouldn't containers (e.g.: docker/lxc) be almost as fast as native at disk I/O?

I mean that's basically why I moved my self hosted virtual servers from KVM, which was abysmal on regular desktop spinning disks, to LXC/Docker which is comparably fast to native -- plus I can fit a lot more containers than full VMs.

sytse on Jan 23, 2017 [–]

The problem is that on MacOS you have to run containers in a virtual machine since you're not running on Linux. Crossing the VM boundary with IO can be slow, especially on virtualbox.

emilburzo on Jan 23, 2017 | [–]

Oh, I'm not using MacOS so I didn't know that.

It makes a lot more sense now, thanks!

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