FreeBSD 8.3

[Wojciech Puchar]

>> i would rather bet on linux addon kernel modules you have to install.
>
> Are you talking about the guest additions? They're already installed
> (on a VM that was running on an older Core 2 CPU). Performance sucks.

something must be wrong with linux interacting with virtualbox.

Won't help you as i never used linux on it, and actually at all for long 
time.

>> In windows you have to install "guest additions" without this it is 
>> plain terrible.
>
> I haven't managed to get through an install on a 64-bit windows system

Windows 7 64-bit installs fine. FreeBSD 8.3, vbox 4.0.12

>> sandy bridge?
>
> Yes, I'm sure that every guest OS I've tried on a 64 bit guest
> sucks. I'm busy recreating 32-bit versions of the 64-bit guests where
> I can.

maybe. i didn't do very detailed tests. and don't use 64-bit guest in 
production.

>> problems with latency you describe
>
> Could you send me the system settings (VT-X, PAE, etc.) you used for
> this?
Everything that is possible enable in BIOS, FreeBSD/amd64 8.3-stable 
(like month old or so), virtualbox 4.0.12

no fancy tricks, custom kernel but nothing special.

If you need more ask on priv.