From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1GDsWY-0001j4-5q for garchives@archives.gentoo.org; Fri, 18 Aug 2006 00:47:46 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.7/8.13.6) with SMTP id k7I0jdSK030921; Fri, 18 Aug 2006 00:45:39 GMT Received: from smtp102.mail.mud.yahoo.com (smtp102.mail.mud.yahoo.com [209.191.85.212]) by robin.gentoo.org (8.13.7/8.13.6) with SMTP id k7I0haGn027716 for ; Fri, 18 Aug 2006 00:43:36 GMT Received: (qmail 30282 invoked from network); 18 Aug 2006 00:43:35 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com.au; h=Received:Message-ID:Date:From:User-Agent:MIME-Version:To:Subject:References:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=FWYmUVrUjw5LnEa/ONHPYNa5bIyC+fQ/qB/I3IiJmPDwPr8b3hahognvpz2OwObQYYbo94421jSXEKA3V+6M7Vg9cU3WIHsds7tPbUDVn0Cz0Kdg6tTaI0gA0Bp2iqEKyW7yAmqSV0X1aaYaQF6A5qm1EAe/DpCV+qDKY0Chf+A= ; Received: from unknown (HELO ?192.168.0.66?) (tnuro@150.101.157.146 with plain) by smtp102.mail.mud.yahoo.com with SMTP; 18 Aug 2006 00:43:34 -0000 Message-ID: <44E50D33.2000008@yahoo.com.au> Date: Fri, 18 Aug 2006 10:43:31 +1000 From: TN User-Agent: Thunderbird 3.0a1 (Windows/20060403) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] [Very OT] - Kill-A-Watt (240V Version) to measure my Gentoo Server Power Usage References: <1154625941.27366.17.camel@neuromancer.home.net> In-Reply-To: <1154625941.27366.17.camel@neuromancer.home.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Archives-Salt: 1189467c-9299-4fba-841c-4ccfef1335e6 X-Archives-Hash: ac0a2979e344fa46102b96f1bea29cce I'm a bit late into this thread, but I built my own from a kit available here in Australia. It's a design from a local magazine called Silicon Chip, and retails through a few places, like DSE & Altronics (www.altronics.com.au) http://www.dse.com.au/cgi-bin/dse.storefront/44e509be0969bde4273fc0a87f9c0731/Product/View/K7217 It's an expensive kit though and you need to fo through a calibration setup where you put a purely resistive high load on (so that the PF=1.0, I used a domestic fanless heater). It's easy enough, but if you're not experienced it is a potentially dangerous exercise. You can buy cheaper killawatt type of devices, but I don't know how good they are in comparison this this unit I built. Powerfactors must be taken into account and I believe some of the real cheap units may not be accurate with inductive/capacitive loads. Switch mode power supplies are also notoriously difficult to accurately measure - but near enough might be good enough for most people. There's a cheap unit which I'm going to buy from Jaycar to compare to my kit, but this will have Australian pins on it since it's a wallbug one like Killawatt. The kit I built was good this way - you just bought a short extension lead and cut it in half to use as male & female for your country. http://www.jaycar.com.au/productView.asp?ID=MS6115&CATID=&keywords=power+meter&SPECIAL=&form=KEYWORD&ProdCodeOnly=&Keyword1=&Keyword2=&pageNumber=&priceMin=&priceMax=&SUBCATID= As a matter of interest, I have a 2.6GHz P4 (not HT) with 3 HDD's in it, and the PC alone consumes around 90W while idle, with no HDD access, 2 of the 3 drives are in standby too. Compare this 90W to my windows box which is a P4 3.2GHz machine with a Radeon 9800 Pro video card - this machine consumes 170-180W idling, and almost 300W while playing a game (ie. CPU & GPU loaded). Also, my TV/DVD player/amplifier/VCR combination consumes 30W when everything is 'off', and only 100W when it's all going. So these days I turn my whole setup off overnight and most of the day until I actually use them in the evenings.....so if my system is off for 10 hours, it effectively means that I've saved 300Wh, which can run my system for 3 hours (more than I actually watch per day!) Sure, it costs cents to run, but in a quarterly bill you do actually see the difference, plus every kWh creates around 0.6kg of emissions (US average, I don't have figures for my own country) Ow Mun Heng wrote: > Hi Guys, > > I know this is VERY OT. I have a Gentoo Server running at Home 24/7 and > there's a possiblity that it's really eating up my energy bill. > > I've seen the Kill-A-Watt > http://www.thinkgeek.com/gadgets/electronic/7657/ but it's a 120V US > Version. > > I'm looking for a 240V Version. Would anyone here know where to get one? > > The Server is an old DELL PowerEdge 4300 w/ 2x350Mhz Procs and 1GB Mem > > > Send instant messages to your online friends http://au.messenger.yahoo.com -- gentoo-user@gentoo.org mailing list