From owner-freebsd-xen@FreeBSD.ORG Fri Nov 29 15:28:23 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 17B59B0E for ; Fri, 29 Nov 2013 15:28:23 +0000 (UTC) Received: from mail.tdx.com (mail.tdx.com [62.13.128.18]) by mx1.freebsd.org (Postfix) with ESMTP id D49841CF9 for ; Fri, 29 Nov 2013 15:28:22 +0000 (UTC) Received: from Mail-PC.tdx.co.uk (storm.tdx.co.uk [62.13.130.251]) (authenticated bits=0) by mail.tdx.com (8.14.3/8.14.3/) with ESMTP id rATFNQQA026450 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 29 Nov 2013 15:23:27 GMT Date: Fri, 29 Nov 2013 15:23:26 +0000 From: Karl Pielorz To: freebsd-xen@freebsd.org Subject: Xen Guests / NTP best practice? Message-ID: <960417385DD53D94B3E2DF1C@Mail-PC.tdx.co.uk> X-Mailer: Mulberry/4.0.8 (Win32) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit 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: Fri, 29 Nov 2013 15:28:23 -0000 Hi, We have a number of FreeBSD 9.x boxes now running under XenServer 6.2 Does anyone have any info / best practice / guides for what's best to use NTP / time sync wise? I've noticed that NTP isn't "overly happy" on some of these hosts (i.e. it doesn't seem to settle on some, or will run for a while - then de-sync). We have two local NTP servers (not virtualized) - should we be getting the guest to sync? - Can Xen keep the clock in sync for us (Xen itself is pointed at the two ntp servers) - or are there any options / configs we should consider using with NTP to keep time sync'd up? Thanks, -Karl