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software/OpenBSD

1. vmm(4).
2. Booting VMs is fast as hell.
3. Misc and old stuff

vmm(4).

It is increadibly fast ! Here are the GENERIC kernel compilation times, observed on a physical machine and on a virtual one that is running on the same physical machine of course:

How can it be faster than native machine ?

Booting VMs is fast as hell.

• One terminal on the physical
  $ while true; do
> date
> ssh -o ConnectTimeout=1 puffy1 "uptime; exit"
> sleep 1
> done
Thu Oct 6 15:36:14 CEST 2016
ssh: connect to host puffy1 port 22: Network is down
Thu Oct 6 15:36:15 CEST 2016
ssh: connect to host puffy1 port 22: Network is down
[snip…]

• Another terminal on the physical
  # date; rcctl start vmd
Thu Oct 6 15:36:18 CEST 2016
vmd(ok)
#

• In the first terminal, we can see:
  Thu Oct 6 15:36:26 CEST 2016
ssh: connect to host puffy1 port 22: Connection refused
Thu Oct 6 15:36:27 CEST 2016
3:36PM 5 secs, 0 users, load averages: 0.56, 0.12, 0.04

So it booted the whole system (kernel and userland) in less than 10 seconds !

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