From owner-cvs-src@FreeBSD.ORG Fri Sep 30 12:49:15 2005 Return-Path: X-Original-To: cvs-src@freebsd.org Delivered-To: cvs-src@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8C5BA16A41F; Fri, 30 Sep 2005 12:49:15 +0000 (GMT) (envelope-from ticso@cicely12.cicely.de) Received: from srv1.cosmo-project.de (srv1.cosmo-project.de [213.83.6.106]) by mx1.FreeBSD.org (Postfix) with ESMTP id A2FEB43D49; Fri, 30 Sep 2005 12:49:12 +0000 (GMT) (envelope-from ticso@cicely12.cicely.de) Received: from cicely5.cicely.de (cicely5.cicely.de [10.1.1.7]) (authenticated bits=0) by srv1.cosmo-project.de (8.12.10/8.12.10) with ESMTP id j8UCn5BS058574 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=OK); Fri, 30 Sep 2005 14:49:07 +0200 (CEST) (envelope-from ticso@cicely12.cicely.de) Received: from cicely12.cicely.de (cicely12.cicely.de [10.1.1.14]) by cicely5.cicely.de (8.12.10/8.12.10) with ESMTP id j8UCm4eG080669 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 30 Sep 2005 14:48:05 +0200 (CEST) (envelope-from ticso@cicely12.cicely.de) Received: from cicely12.cicely.de (localhost [127.0.0.1]) by cicely12.cicely.de (8.13.4/8.13.3) with ESMTP id j8UCm4U5071805; Fri, 30 Sep 2005 14:48:04 +0200 (CEST) (envelope-from ticso@cicely12.cicely.de) Received: (from ticso@localhost) by cicely12.cicely.de (8.13.4/8.13.3/Submit) id j8UCm2ru071804; Fri, 30 Sep 2005 14:48:02 +0200 (CEST) (envelope-from ticso) Date: Fri, 30 Sep 2005 14:48:02 +0200 From: Bernd Walter To: Peter Jeremy Message-ID: <20050930124802.GF54923@cicely12.cicely.de> References: <200509261655.j8QGtBeE012785@repoman.freebsd.org> <20050926174442.GA57238@xor.obsecurity.org> <20050926181234.GA23937@freebie.xs4all.nl> <20050927103746.364de995.trhodes@FreeBSD.org> <20050927184742.GB30441@freebie.xs4all.nl> <20050928044624.2e052569.trhodes@FreeBSD.org> <20050929161804.F34322@fledge.watson.org> <20050929174602.GA45515@freebie.xs4all.nl> <20050929192859.GD72352@cirb503493.alcatel.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050929192859.GD72352@cirb503493.alcatel.com.au> X-Operating-System: FreeBSD cicely12.cicely.de 5.4-STABLE alpha User-Agent: Mutt/1.5.9i X-Spam-Status: No, score=-5.9 required=3.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.0.4 X-Spam-Report: * -3.3 ALL_TRUSTED Did not pass through any untrusted hosts * -2.6 BAYES_00 BODY: Bayesian spam probability is 0 to 1% * [score: 0.0000] X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on cicely12.cicely.de Cc: Wilko Bulte , src-committers@freebsd.org, cvs-all@freebsd.org, cvs-src@freebsd.org Subject: Re: cvs commit: src/sys/kern subr_pcpu.c X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: ticso@cicely.de List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Sep 2005 12:49:15 -0000 On Fri, Sep 30, 2005 at 05:28:59AM +1000, Peter Jeremy wrote: > On Thu, 2005-Sep-29 19:46:02 +0200, Wilko Bulte wrote: > >> I remember my old sparcstation hardware at CMU with some fondness for this > >> reason -- on a cold Pittsburgh evening, overheating computer hardware was > >> strictly necessary, even in the presence of decent radiators. However, > >> with 14+ cooling fans for one machine, it did need to be a couple of rooms > >> down. > > > >Hum, yes. That is why I handed down my AS4100 to ticso ;) > > Compared to ES40/ES45's, AS4100's run very cool and I think they're quieter. A major difference is that EV6 CPUs have more advanced power management features, while the EV56 in AS4100 even burn lots of power when idle :( But there is still much we could do from software to spare power on all alpha systems - I plan to do measurements with idle-loops soon. Yes - AS4100 are quitely, you don't really hear much from it in my server room. But I don't have to pay for noise, power is the critical point. > If you want to warm things up, try a 42U cabinet full of SunFire V440's. :) -- B.Walter BWCT http://www.bwct.de bernd@bwct.de info@bwct.de