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A comment on What’s New in Docker 1.13?. Parent comment

Re:What’s New in Docker 1.13? by sytse on Friday January 20, 2017 @10:58AM (#13444676)
At GitLab all team members develop without virtualization. Disk IO is just much faster that way. We recommend the approach in our development kit https://gitlab.com/gitlab-org/gitlab-development-kit

We would love to see better virtualization disk performance so it is easier for non-team members to contribute. We're happy that despite that people are still able to contribute https://gitlab.com/gitlab-org/gitlab-ce/merge_requests?scope...

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Re:What’s New in Docker 1.13? by emilburzo on Sunday January 22, 2017 @04:33PM (#13457646)
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.

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Re:What’s New in Docker 1.13? by sytse on Sunday January 22, 2017 @11:15PM (#13459706)
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.
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Re:What’s New in Docker 1.13? by emilburzo on Monday January 23, 2017 @01:25AM (#13460251)
Oh, I'm not using MacOS so I didn't know that.

It makes a lot more sense now, thanks!

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