From owner-freebsd-xen@FreeBSD.ORG Sat Nov 30 10:53:04 2013 Return-Path: Delivered-To: freebsd-xen@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 2487F6EA for ; Sat, 30 Nov 2013 10:53:04 +0000 (UTC) Received: from mail.tdx.com (mail.tdx.com [62.13.128.18]) by mx1.freebsd.org (Postfix) with ESMTP id D8DDE18D0 for ; Sat, 30 Nov 2013 10:53:03 +0000 (UTC) Received: from study64.tdx.co.uk (study64.tdx.co.uk [62.13.130.231]) (authenticated bits=0) by mail.tdx.com (8.14.3/8.14.3/) with ESMTP id rAUAqxCa025674 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sat, 30 Nov 2013 10:52:59 GMT Date: Sat, 30 Nov 2013 10:52:59 +0000 From: Karl Pielorz To: =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= , freebsd-xen@freebsd.org Subject: Re: Xen Guests / NTP best practice? Message-ID: In-Reply-To: <5298D244.3070905@citrix.com> References: <960417385DD53D94B3E2DF1C@Mail-PC.tdx.co.uk> <5298D244.3070905@citrix.com> X-Mailer: Mulberry/4.0.8 (Mac OS X) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.16 Precedence: list List-Id: Discussion of the freebsd port to xen - implementation and usage List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 30 Nov 2013 10:53:04 -0000 --On 29 November 2013 18:43:32 +0100 Roger Pau Monn=C3=A9=20 wrote: > There have been some improvements in 10 regarding timekeeping, now > FreeBSD makes use of the PV timer and PV clock when running under HVM, > which should be more stable. > > Could you try if your issues with ntp are reproducible on 10? Sure, I'll give 10 a go. Does the above mean for a VM you don't need to run = ntp? (i.e. it'll stay in sync with dom0 / the XenServer?) - or is ntp still = necessary? Likewise do you know if there is any recommended solution for 9.x (which is = the bulk of our VM's). Thanks, -Karl