From owner-freebsd-arm@FreeBSD.ORG Thu Feb 7 15:08:33 2013 Return-Path: Delivered-To: freebsd-arm@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id E3A9F962 for ; Thu, 7 Feb 2013 15:08:33 +0000 (UTC) (envelope-from imp@bsdimp.com) Received: from mail-ia0-x22b.google.com (ia-in-x022b.1e100.net [IPv6:2607:f8b0:4001:c02::22b]) by mx1.freebsd.org (Postfix) with ESMTP id A36826B4 for ; Thu, 7 Feb 2013 15:08:33 +0000 (UTC) Received: by mail-ia0-f171.google.com with SMTP id z13so3036337iaz.2 for ; Thu, 07 Feb 2013 07:08:33 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=x-received:sender:subject:mime-version:content-type:from :in-reply-to:date:cc:content-transfer-encoding:message-id:references :to:x-mailer:x-gm-message-state; bh=XKXxVuFx2pCQlOoPgm/NJySVa3AwtL6j7kEFN6g4RLs=; b=SlQVgLvnoeYsmlTxjuzCDXvPfFPdO6XD2AMke8Bj1pqdBPtB5VpwbSZXIDzdfaoEGp oIwJcl2ozbd3pjdpS4//vCjR63J3jrJhMocw57oSmG9GyTweffdGDgvdqK5oyRIMy7e9 0KfIqGJ7kuffb1UEJh4ZsXeM8GApD/8ZN8mVtdMzPyDorJOkNkEURAMPV3o7YvY/aMlc 8HXQ4wz9nhFs+cGaxcraf+wMtH4fjQ+mEAQ6YVu4CwEMujUybDxMlWVJyVsSIC+954c5 xHRd7MdTvqk82/mnXOaDwZyt+NrvUEQodSffgdaxaa27e9z0x1ZHpKpinEvnBrOgfe9E 2rmA== X-Received: by 10.50.183.167 with SMTP id en7mr15038327igc.58.1360249712712; Thu, 07 Feb 2013 07:08:32 -0800 (PST) Received: from 53.imp.bsdimp.com (50-78-194-198-static.hfc.comcastbusiness.net. [50.78.194.198]) by mx.google.com with ESMTPS id uy13sm9827768igb.7.2013.02.07.07.08.29 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 07 Feb 2013 07:08:30 -0800 (PST) Sender: Warner Losh Subject: Re: SD card -image- for the beaglebone Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: text/plain; charset=windows-1252 From: Warner Losh In-Reply-To: <933D29A2-B78E-44D5-A701-7397CD532CD1@kientzle.com> Date: Thu, 7 Feb 2013 08:08:27 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: References: <510A4F5B.7000407@g7iii.net> <1359646574.93359.327.camel@revolution.hippie.lan> <510AE1D6.8010203@g7iii.net> <1360124308.93359.557.camel@revolution.hippie.lan> <5112115D.5040709@g7iii.net> <1360158409.93359.590.camel@revolution.hippie.lan> <52928DD2-AA41-4B3C-A22A-1F755832D220@bsdimp.com> <1360177280.93359.611.camel@revolution.hippie.lan> <933D29A2-B78E-44D5-A701-7397CD532CD1@kientzle.com> To: Tim Kientzle X-Mailer: Apple Mail (2.1085) X-Gm-Message-State: ALoCoQlaNaReA15TJEXRP9k7AevNDw7c6U2lpfSy96DXE98HLUKe2XxIsJApMlK9R5+p5IuXp2Xf Cc: freebsd-arm@freebsd.org, Ian Lepore X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Porting FreeBSD to the StrongARM Processor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Feb 2013 15:08:34 -0000 On Feb 6, 2013, at 7:12 PM, Tim Kientzle wrote: >>=20 >> Well, besides running a little roll-your-own clock ensemble system, a >> more mundane use of multiple PPS inputs would be simple failover for >> ntpd. At least, I think in theory it should work fine to configure = ntpd >> with multiple refclocks and if one goes bad it can continue with = others. >=20 > Hmmm=85 I think I would instead have multiple > BeagleBones, each with a single PPS input and > each acting as an independent NTP master. >=20 > If one goes bad, the NTP clients will fail over > to use another master. That matches what I've had the best experience with ntpd...=