I've been using this setup for years and glad to see some info here on HN about it. It's very fast but more importantly for development it really does a great j

I've been using this setup for years and glad to see some info here on HN about it. It's very fast but more importantly for development it really does a great job for porting to the real thing. I've never built anything in Xhyve that fails on a real install. Most of the differences I've seen are in vmnet versus like an e1000 device. I don't believe it does full duplex as per the xhyve docs (its a TODO under virtio_net) and on the MacOS side there is no Tap device like with Hyperkit. Despite that web pages can be served quite fast, a lot of ops are a stub to mmap on the host. NFS runs really well as a native format to share between guest and host. Heh, I've left it on for a couple of months accidentally and was still running like a top. My only real gripe is NTP drifts when the host goes to sleep and there is not an out-of-the-box solution for that like say VMWare. Someone has gone part of the way with getting e1000 for FreeBSD with Hyperkit it just needs to be looked into more, but this is a good explanation- and explains the performance differences: http://thebsdbox.co.uk/a-peak-inside-docker-for-mac-hyperkit-wait-xhyve-no-bhyve/ http://thebsdbox.co.uk/a-peak-inside-docker-for-mac-hyperkit...