Re: [Ntp] Temperature Compensation for NTP?

Miroslav Lichvar <mlichvar@redhat.com> Tue, 08 December 2020 10:00 UTC

Return-Path: <mlichvar@redhat.com>
X-Original-To: ntp@ietfa.amsl.com
Delivered-To: ntp@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 99A4C3A0836 for <ntp@ietfa.amsl.com>; Tue, 8 Dec 2020 02:00:26 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.121
X-Spam-Level:
X-Spam-Status: No, score=-2.121 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=redhat.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id d0_n_cxw91rG for <ntp@ietfa.amsl.com>; Tue, 8 Dec 2020 02:00:25 -0800 (PST)
Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [63.128.21.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D8A6C3A082F for <ntp@ietf.org>; Tue, 8 Dec 2020 02:00:24 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1607421623; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=0GDnN+7RVTP0sXoSJmvYryyqfxYw/p3H8sqAUAAMiXc=; b=TEgm2qOKdDoNwxtdAujQ9dUFRCs+gUgonPYtMgc7Z6Lm/E3aqKX7kIgsE2qsNui5o0AlYc FX1UDjDHhZPfVLXpcZvdjfWwyWUXHJXvhtKKazc1nmf65L7xu7Et+wJ+dPz5DfolSkaJCG KoK4p8uXpmoIWOlPyXz0RUhLfC4gHmw=
Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-564-0n4GockmN7u462H3cexo6w-1; Tue, 08 Dec 2020 05:00:19 -0500
X-MC-Unique: 0n4GockmN7u462H3cexo6w-1
Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 1C52A80734D; Tue, 8 Dec 2020 10:00:18 +0000 (UTC)
Received: from localhost (holly.tpb.lab.eng.brq.redhat.com [10.43.134.11]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 6DD434F3C6; Tue, 8 Dec 2020 10:00:17 +0000 (UTC)
Date: Tue, 08 Dec 2020 11:00:15 +0100
From: Miroslav Lichvar <mlichvar@redhat.com>
To: Ulrich Windl <Ulrich.Windl@rz.uni-regensburg.de>
Cc: "ntp@ietf.org" <ntp@ietf.org>
Message-ID: <20201208100015.GU2352378@localhost>
References: <5FCF48F1020000A10003D5E1@gwsmtp.uni-regensburg.de>
MIME-Version: 1.0
In-Reply-To: <5FCF48F1020000A10003D5E1@gwsmtp.uni-regensburg.de>
X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11
Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mlichvar@redhat.com
X-Mimecast-Spam-Score: 0
X-Mimecast-Originator: redhat.com
Content-Type: text/plain; charset="us-ascii"
Content-Disposition: inline
Archived-At: <https://mailarchive.ietf.org/arch/msg/ntp/XHrGUACudNy0uDsJyjU2bj6JnuU>
Subject: Re: [Ntp] Temperature Compensation for NTP?
X-BeenThere: ntp@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: <ntp.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ntp>, <mailto:ntp-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ntp/>
List-Post: <mailto:ntp@ietf.org>
List-Help: <mailto:ntp-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ntp>, <mailto:ntp-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 08 Dec 2020 10:00:27 -0000

On Tue, Dec 08, 2020 at 10:35:45AM +0100, Ulrich Windl wrote:
> Hi!
> 
> The avarage computer oscillator is mainly controlled by temperature. Up to now NTP does not have a computational model to consider the temperature nearby the oscillator, while most modern systems have some temperature sensor(s).

I don't see how this is related to NTP. Is the current specification
preventing servers or clients from implementing a software temperature
compensation?

-- 
Miroslav Lichvar