I tend to turn off the "virtualization" thing, because, we have discovered, that when it's on, and unused, it costs (believe it or not) a couple of watts.
I was looking at the VT-x and VT-d settings in my BIOS on X11SSM and didn't turn them off as I though jails may potentially use them. Do jails not use any of the hardware virtualisation?
I was looking at the VT-x and VT-d settings in my BIOS on X11SSM and didn't turn them off as I though jails may potentially use them. Do jails not use any of the hardware virtualisation?
Correct. Jails do not use that virtualization principle---or really, any virtualization principle, in some sense. A jail is more like a "very fancy chroot" than a "virtual machine", in my view.
I don't use jails personally, all my VMs are on ESXi or Hyper-V. However, I do have those enabled since I want to take advantage of them and be able to "pass-through" devices directly to certain VMs. Just my 2 cents...
You need VT-d to be able to pass through multiple layers. It might be needed in FreeNAS 10. Pertaining to jails. And I say might because I don't know how VMs are going to work.
I'll have freenas running direct on the hardware not in a VM so don't see that I'll need to pass through any devices. But yes, agreed I'd need to look at it for freenas 10 upgrade, thx.