From owner-freebsd-questions Sat Jan 4 6:29:36 2003 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8991837B401 for ; Sat, 4 Jan 2003 06:29:35 -0800 (PST) Received: from tomts22-srv.bellnexxia.net (tomts22.bellnexxia.net [209.226.175.184]) by mx1.FreeBSD.org (Postfix) with ESMTP id EB89243ED4 for ; Sat, 4 Jan 2003 06:29:32 -0800 (PST) (envelope-from matt@gsicomp.on.ca) Received: from gabby.gsicomp.on.ca ([65.95.187.110]) by tomts22-srv.bellnexxia.net (InterMail vM.5.01.04.19 201-253-122-122-119-20020516) with ESMTP id <20030104142932.NCCN7938.tomts22-srv.bellnexxia.net@gabby.gsicomp.on.ca>; Sat, 4 Jan 2003 09:29:32 -0500 Received: from hermes (hermes.gsicomp.on.ca [192.168.0.18]) by gabby.gsicomp.on.ca (8.12.6/8.12.6) with SMTP id h04ERlk5068878; Sat, 4 Jan 2003 09:27:48 -0500 (EST) (envelope-from matt@gsicomp.on.ca) Message-ID: <006801c2b3fd$ba6f0150$1200a8c0@gsicomp.on.ca> From: "Matthew Emmerton" To: "Bsd Neophyte" , References: <20030104135220.60449.qmail@web20108.mail.yahoo.com> Subject: Re: utility that measure electricty usage? Date: Sat, 4 Jan 2003 09:29:38 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG > i know there is something you can put on the socket to measure how much > current is being drawn... but i was wondering if there was some utility > that i could install on my server to measure the power usage for the > server? i'd like to make a chart to see if this device is really > impacting the electricity bill. You can find out the worst-case scenario by hand: 1) Take the wattage of the power supply of the system (ie P = 300W) 2) Determine the amount of time this server operates per month (ie t = 24 hours x 31 days = 744 hours) 3) Compute kWh: P / 1000 * t = 300 / 1000 * 744 = 223.2 kWh In my neck of the woods, electricity costs 4.9 cents per kWh, so my one server costs me $11.16/month to run. Of course, you should also take into account the power used by things like monitors, printers, and network equipment. -- Matt Emmerton To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message