Xen performance on FreeBSD vs Linux

[Juergen Gotteswinter]

Am So., 12. Jan. 2020 um 20:07 Uhr schrieb Stefan Parvu <
sparvu at kronometrix.org>:

> >
> > Also a FreeBSD dom0 can only work in PVH mode, which is faster for
> > certain operations like page table modifications, but it's slower for
> > others, like issuing hypercalls, when compared to a PV dom0.
> >
> > I don't have figures at hand now, but guest creation is likely slower
> > on a FreeBSD PVH dom0 than on a Linux PV dom0, and that's because
> > hypercalls are more expensive on PVH than on PV (has nothing to do
> > whether Linux or FreeBSD is used).
>
> right. thanks a lot for pointers. A bit confusing is that I see mentioned
> around that Xen of FreeBSD is experimental. Is this true ?
>
> I will have 2 servers to test Xen and Bhyve on FreeBSD 12.1 and check how
> well the hypervisors work for different guest from Linux, BSD and Windows.
>
> Im more interested on bhyve vs Xen on FreeBSd than Linux. We will keep
> FreeBSD as our main virtualization platform.
>
> Stefan


FreeBSD as Dom0 feels (at least ~6 month ago) really somehow experimental
compared to my linux experience. i would go the bhyve route if your
hardware supports the required cpu features.