From owner-freebsd-current@FreeBSD.ORG Sat Sep 11 05:19:13 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1A66C106567A for ; Sat, 11 Sep 2010 05:19:13 +0000 (UTC) (envelope-from mavbsd@gmail.com) Received: from mail-bw0-f54.google.com (mail-bw0-f54.google.com [209.85.214.54]) by mx1.freebsd.org (Postfix) with ESMTP id 974B18FC12 for ; Sat, 11 Sep 2010 05:19:12 +0000 (UTC) Received: by bwz20 with SMTP id 20so3449512bwz.13 for ; Fri, 10 Sep 2010 22:19:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:message-id:date:from :user-agent:mime-version:to:subject:references:in-reply-to :x-enigmail-version:content-type:content-transfer-encoding; bh=9RNi+QsTHQ2p8n6xxSN9UGnZ2UspDzt4iJeY1et9xuA=; b=Vof8mQmN6jlBcq02PxEgcVkHemKQv69dnshWzqXwai7KuxiwzaHvJmyn00irtk35Lz /itnv+QVc8gfmHJVS8LbzpbQ4QXfYsmOANyAPU6n2Dw6lPQuwQFrs+VsmzI41AjU5wr0 Vq844Y6X1QRwHooT3vpziGfNPmfkA6BmBsW2U= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:subject :references:in-reply-to:x-enigmail-version:content-type :content-transfer-encoding; b=I/3qsKNuA6/0xt7CSIgvsmcXiYgwr+TbAGfDtgHceyOicTPNEHddlPr1ghsUnduxKi oQQWgCFk820NtEJKxb1nsSAd+4Jo8lgiXTgct2LX22ceXZpJ6HWrAFUxUNFz6SSKij/n HRkliEv3wzNFV5lLTTb+JVxuYvdK2z+yXkpyA= Received: by 10.204.76.130 with SMTP id c2mr1217808bkk.81.1284182351399; Fri, 10 Sep 2010 22:19:11 -0700 (PDT) Received: from mavbook2.mavhome.dp.ua (pc.mavhome.dp.ua [212.86.226.226]) by mx.google.com with ESMTPS id x13sm2576926bki.12.2010.09.10.22.19.08 (version=SSLv3 cipher=RC4-MD5); Fri, 10 Sep 2010 22:19:09 -0700 (PDT) Sender: Alexander Motin Message-ID: <4C8B113B.6040607@FreeBSD.org> Date: Sat, 11 Sep 2010 08:18:51 +0300 From: Alexander Motin User-Agent: Thunderbird 2.0.0.23 (X11/20091212) MIME-Version: 1.0 To: Bruce Cran , FreeBSD-Current References: In-Reply-To: X-Enigmail-Version: 0.96.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Subject: Re: LAPIC timer reported as 0 Hz during boot X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 11 Sep 2010 05:19:13 -0000 Bruce Cran wrote: > Looking through a dmesg from today I noticed that the LAPIC timer is being > reported as running at 0 Hz: > > Event timer "LAPIC" frequency 0 Hz quality 500 Frequency of LAPIC timer is not reported instantly. It requires calibration to be discovered. Calibration requires time. To reduce boot time I am not calibrating LAPIC timer until it is used first time. With presence of HPET timer there is high chance that LAPIC timer will never be calibrated on significant part of systems. It is not a bug. -- Alexander Motin