From owner-freebsd-questions@FreeBSD.ORG Fri Sep 28 18:01:07 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 67356106564A for ; Fri, 28 Sep 2012 18:01:07 +0000 (UTC) (envelope-from dweimer@dweimer.net) Received: from webmail.dweimer.net (24-240-198-187.static.stls.mo.charter.com [24.240.198.187]) by mx1.freebsd.org (Postfix) with ESMTP id 2CA1F8FC0C for ; Fri, 28 Sep 2012 18:01:06 +0000 (UTC) Received: from www.dweimer.net (webmail.dweimer.net [192.168.5.1]) by webmail.dweimer.net (8.14.5/8.14.5) with ESMTP id q8SI15q9032147 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Fri, 28 Sep 2012 13:01:05 -0500 (CDT) (envelope-from dweimer@dweimer.net) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Date: Fri, 28 Sep 2012 13:01:05 -0500 From: dweimer To: Organization: dweimer.net Mail-Reply-To: In-Reply-To: References: <20120927225642.09f69458@europa> Message-ID: X-Sender: dweimer@dweimer.net User-Agent: Roundcube Webmail/0.8.1 Subject: Re: PC-BSD 9.0 in VirtualBox X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: dweimer@dweimer.net List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 28 Sep 2012 18:01:07 -0000 On 2012-09-28 12:06, Warren Block wrote: > On Thu, 27 Sep 2012, Mike Jeays wrote: > >> I have been running PC-BSD 9.0 with the KDE interface in a >> VirtualBox VM, and notice that it uses CPU resources when idle, >> driving up my CPU temperature about 15 degrees on an otherwise idle >> machine. (It is an Intel i5 quad four). Is this to be expected? > > It may help to add > > kern.hz="100" > > to /boot/loader.conf. Ah yes, that was the fix I was vaguely remembering when I mentioned the old VMware issue, oddly enough I haven't seen it recently. But then, maybe not so odd, just checked with sysctl kern | grep hz on two machines, one running on physical hardware the other on vmware workstation 9. Both were compiled from source, running 9.0-RELEASE-p4, the physical system lists kern.hz: 1000, while the virtual lists ker.hz: 100. No value is set in /boot/loader.conf on either system, however the detection mechanism (whatever that might happen to be) that is setting this to the lower value on the VMware virtual machine might not be working in a Virtual Box virtual machine. -- Thanks, Dean E. Weimer http://www.dweimer.net/