From owner-freebsd-questions@FreeBSD.ORG  Sat Feb 14 12:50:21 2015
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@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 164C7A74
 for <freebsd-questions@freebsd.org>; Sat, 14 Feb 2015 12:50:21 +0000 (UTC)
Received: from mail-pd0-f179.google.com (mail-pd0-f179.google.com
 [209.85.192.179])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (Client CN "smtp.gmail.com",
 Issuer "Google Internet Authority G2" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id DE3CDC9B
 for <freebsd-questions@freebsd.org>; Sat, 14 Feb 2015 12:50:20 +0000 (UTC)
Received: by pdbfp1 with SMTP id fp1so20789341pdb.5
 for <freebsd-questions@freebsd.org>; Sat, 14 Feb 2015 04:50:14 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
 h=mime-version:in-reply-to:references:date:message-id:subject:from:to
 :cc:content-type;
 bh=mlmpgkjP5OzY7bwfRIGRfROUhGiDUZs6WRnOmHl1a8I=;
 b=FhZqhBMwnb5q+7aAMbGRfKzboMxMiDlGNjI2lJk7HaLa7dumraOrEYJ3+6wy6Ls5l/
 dBzbXgJpNRA6EiljE9WbjITtVaGiDE9oOCRqeS/0Bscyaq1r1mWcyv/Z3G+veBp4TQaI
 Z5uzAllsmz8qw9mFDg4xPJU0O0HeaJlsnU8Mv7zd9SaNwN620DcRTLPY7q/M7n42fjOU
 3Q1DW1fWaXzlRzBDNBNZbRCiOFkYhswLNRJQEpwy7HkNxze2lXT9GqPCxIjmdXhp9Y05
 ENaAjXcifTgYVDZZdmkzi2noExNxmP3fX4f4uPehu+IapJ56VNfYXwttiXbpbMm+iwhg
 NclQ==
MIME-Version: 1.0
X-Received: by 10.68.69.36 with SMTP id b4mr16481535pbu.132.1423918214607;
 Sat, 14 Feb 2015 04:50:14 -0800 (PST)
Received: by 10.70.110.134 with HTTP; Sat, 14 Feb 2015 04:50:14 -0800 (PST)
In-Reply-To: <BF8DFE66-E19D-45DA-A0C3-EB08D7E9DFF9@pobox.com>
References: <AE5A370C-A7F7-41D2-900D-B26521A2D705@pobox.com>
 <CA+tpaK3bn-UPrqTU9cME2V9Ls=auf1n0rdr+uHA1b7pcspmiPw@mail.gmail.com>
 <BF8DFE66-E19D-45DA-A0C3-EB08D7E9DFF9@pobox.com>
Date: Sat, 14 Feb 2015 06:50:14 -0600
Message-ID: <CA+tpaK1rJszT2-JMUqBp6hb3nMDVQchn8FBR7icQaSNi1gad4w@mail.gmail.com>
Subject: Re: How to adjust clock frequency in FreeBSD 10.1 ?
From: Adam Vande More <amvandemore@gmail.com>
To: Rick Thomas <rbthomas@pobox.com>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
X-Content-Filtered-By: Mailman/MimeDel 2.1.18-1
Cc: FreeBSD Questions <freebsd-questions@freebsd.org>
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions/>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 14 Feb 2015 12:50:21 -0000

On Sat, Feb 14, 2015 at 5:42 AM, Rick Thomas <rbthomas@pobox.com> wrote:

> When I try to change the frequency with (e.g.)
>     sysctl kern.timecounter.tc.timebase.frequency=3D36000000
>
> I get
>     sysctl: oid =E2=80=98kern.timecounter.tc.timebase.frequency' is read =
only
>

Yeah, pretty clear that sysctl isn't going to help you in any way in "man 4
timecounters"

Is there some other way to set the frequency?
>

Sure, but I thought keeping accurate time was the goal?  If so, sharing the
output from the first command I gave you is a good start.


--=20
Adam