some interesting observations on the relative performance of kvm vs. bhyve

[Aryeh Friedman]

On Sat, Feb 1, 2014 at 10:16 PM, Peter Grehan <grehan at freebsd.org> wrote:

> > I have 1 host that dual boots FreeBSD and Ubuntu 12.04.3 LTS and bhtyve
>
>> seems to be atleast 3 or 4 times faster with disk I/O then kvm using the
>> most stripped down command lines I can come up with.
>>
>
>  I'm guessing that the default cache mode for qemu in that release is
> "none". You may want to switch it to "writeback", which is what bhyve does
> by default (it can be changed with AHCI, see bhyve(8)).
>

Is this also true of emulators/qemu (without kqemu)?

-- 
Aryeh M. Friedman, Lead Developer, http://www.PetiteCloud.org