IPFire is running very well in a virtual environment.

See this chart to get a clue about how many machines are running virtually.

Virtualised systems
24.63%

Hypervisors

This is a list of all hypervisor vendors that IPFire is running on.

VMware
45.19%
KVM
28.16%
Microsoft
15.90%
Xen
7.84%
VirtualBox
2.12%
Unknown
0.78%