From owner-freebsd-stable@FreeBSD.ORG Tue Mar 20 20:41:35 2012 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 80D4D1065675 for ; Tue, 20 Mar 2012 20:41:35 +0000 (UTC) (envelope-from mgamsjager@gmail.com) Received: from mail-vx0-f182.google.com (mail-vx0-f182.google.com [209.85.220.182]) by mx1.freebsd.org (Postfix) with ESMTP id 389198FC0A for ; Tue, 20 Mar 2012 20:41:34 +0000 (UTC) Received: by vcmm1 with SMTP id m1so623906vcm.13 for ; Tue, 20 Mar 2012 13:41:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:from:date:message-id:subject:to:content-type; bh=WkkwbAM84xGy/M96zVFVRAXXAzRqqgJbriRF9lJfNc4=; b=TnzAfnH2vF5RodFc/4GypWaQGFMU4lG1KcOFEHSH0hFj6BXf5ZyeqQGu76tC7s62Im PryFNXyx9JFFuipcKGiXioQAEBguVNz8gENtFox86W7L48Ti0ztzvE1inPnwS+zPyd6c xSBY6SHTYE75LWqn3MyYeMInYG6q25rHXxR3qomiMX+oZRnRvA9/fDrqA2l8wUD2qREw wWDmWtBkfkOykEf8aJDmVH4UJiD7689IyplVWpLI0zFPP0M+AsMJeP36DiL9PE+hi9Xw eOllU2jLj4h0fEwkXFCulU6mh9dI+BX48OQrA9AqiJYVBpLNDKiZ+oe1oG1NJC2V+APC A7tg== Received: by 10.220.153.13 with SMTP id i13mr628554vcw.21.1332276094581; Tue, 20 Mar 2012 13:41:34 -0700 (PDT) MIME-Version: 1.0 Received: by 10.220.157.76 with HTTP; Tue, 20 Mar 2012 13:41:04 -0700 (PDT) From: Matthias Gamsjager Date: Tue, 20 Mar 2012 21:41:04 +0100 Message-ID: To: freebsd-stable@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: powerd and increase in energy need X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Mar 2012 20:41:35 -0000 Hi, my zfs nas has an Asus p5e motherboard (x38 chip) and an intel q9300 (quad core 2,5Ghz) processor with all the energy save setting enabled in the bios. Today I connected the power cord to a voltcraft energy meter to see how much energy the whole system needs in idle mode. I found out that with powerd running the cpu get clocked down to 499 mhz with is nice. The funny thing is that this doesn't decrease the amount of watts the machine need. 2,5ghz or 499mhz doen't matter at all. It gets even funnier. With powerd running the systems actually needs 4 watts more then without powerd running. Isn't the whole point of powerd to to decease the energy needs of a machine? or is it utterly broken with this cpu generation?