From owner-freebsd-virtualization@FreeBSD.ORG  Wed Apr  1 16:41:39 2015
Return-Path: <owner-freebsd-virtualization@FreeBSD.ORG>
Delivered-To: freebsd-virtualization@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 117D4442
 for <freebsd-virtualization@freebsd.org>; Wed,  1 Apr 2015 16:41:39 +0000 (UTC)
Received: from family.redbarn.org (family.redbarn.org
 [IPv6:2001:559:8000:cd::5])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id EE786812
 for <freebsd-virtualization@freebsd.org>; Wed,  1 Apr 2015 16:41:38 +0000 (UTC)
Received: from [IPv6:2001:559:8000:cb:6169:845e:d470:e9f6] (unknown
 [IPv6:2001:559:8000:cb:6169:845e:d470:e9f6])
 (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits))
 (Client did not present a certificate)
 by family.redbarn.org (Postfix) with ESMTPSA id 4BB6718149;
 Wed,  1 Apr 2015 16:41:31 +0000 (UTC)
Message-ID: <551C1FB7.1050501@redbarn.org>
Date: Wed, 01 Apr 2015 09:41:27 -0700
From: Paul Vixie <paul@redbarn.org>
User-Agent: Postbox 3.0.11 (Windows/20140602)
MIME-Version: 1.0
To: Udo Rader <listudo@bestsolution.at>
Subject: Re: available hypervisors in FreeBSD
References: <551BC8B3.2030900@bestsolution.at>
In-Reply-To: <551BC8B3.2030900@bestsolution.at>
X-Enigmail-Version: 1.2.3
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Cc: freebsd-virtualization@freebsd.org
X-BeenThere: freebsd-virtualization@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: "Discussion of various virtualization techniques FreeBSD supports."
 <freebsd-virtualization.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-virtualization>, 
 <mailto:freebsd-virtualization-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-virtualization/>
List-Post: <mailto:freebsd-virtualization@freebsd.org>
List-Help: <mailto:freebsd-virtualization-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-virtualization>, 
 <mailto:freebsd-virtualization-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 01 Apr 2015 16:41:39 -0000



Udo Rader wrote:
> ...
>
> I understand, that bhyve is native to BSD and will probably be the most
> effective. But given its relatively 'young age', is it production ready
> for (non nested) x86/amd64 linux guests?

there's no libvirt for bhyve yet, which turns some people off. (not me,
i don't use libvirt in any case.)

there's significant clock drift, even with
kern.timecounter.hardware="TSC-low" in the guests:

> ...
> Jan 26 05:38:08 guests ntpd[619]: time reset +0.223304 s
> Jan 26 06:06:22 guests ntpd[619]: time reset +0.196973 s
> Jan 26 06:34:24 guests ntpd[619]: time reset +0.200070 s
> Jan 26 07:08:28 guests ntpd[619]: time reset +0.210997 s
> Jan 26 07:36:09 guests ntpd[619]: time reset +0.205481 s
> Jan 26 08:10:04 guests ntpd[619]: time reset +0.205461 s
> Jan 26 08:39:43 guests ntpd[619]: time reset +0.175491 s
> Jan 26 09:10:29 guests ntpd[619]: time reset +0.189261 s
> Jan 26 09:44:03 guests ntpd[619]: time reset +0.164616 s
> Jan 26 10:20:25 guests ntpd[619]: time reset +0.176280 s
> Jan 26 10:56:18 guests ntpd[619]: time reset +0.161555 s
> Jan 26 11:39:53 guests ntpd[619]: time reset +0.166066 s
> Jan 26 12:31:11 guests ntpd[619]: time reset +0.142994 s
> ...

(that's much worse with the default kern.timecounter.hardware value, but
still rather absurd.)

i use bhyve in production and seems altogether ready.


-- 
Paul Vixie