On Saturday, September 1, 2018, Clem Cole <clemc@ccc.com> wrote:
>
>
>
>>
>> Has FreeBSD considered this?
>>
> Last I knew, no.  I was under the impression, the work FreeBSD did
> rewriting the Mach stuff paid off for them at the time.  I have FreeBSD,
> OpenBSD and Linux (and Mac OSx) all running on my systems here.   But the
> problem is that the HW is all over the map in termns of release date, so
> I'm not sure which is faster at this point.   The *BSD systems are the
> easiest to admin and clean/simplest (which is why they only systems I have
> exposed is an OpenBSD box).
>

OpenBSD is also using uvm[1].  But these days it certainly differs from
NetBSD implementation as it was hacked on by different people during the
last several years.

[1] https://man.openbsd.org/uvm.9

--Andy