From owner-freebsd-stable@FreeBSD.ORG Mon Mar 8 12:29:54 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 16BCA1065672; Mon, 8 Mar 2010 12:29:54 +0000 (UTC) (envelope-from dan.naumov@gmail.com) Received: from mail-yx0-f184.google.com (mail-yx0-f184.google.com [209.85.210.184]) by mx1.freebsd.org (Postfix) with ESMTP id B816A8FC1D; Mon, 8 Mar 2010 12:29:53 +0000 (UTC) Received: by yxe14 with SMTP id 14so415631yxe.7 for ; Mon, 08 Mar 2010 04:29:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:content-type; bh=+HMYnIXBz3tQXYZNIqlHaCZEeaEq8UCwL82ADGVgTCg=; b=VFSySO8H+85zDSnk5roeEo5RkJBhx+1fpE6Xpjud2DHAGATjE2jFVXvurYdnnXReZn pOZ+rkvc86zRlUYTpMqkl37dM6oc1EL6vKdfVuCKxMXQu76JosVbJzagXLUoZqIV8GFr 3xp/cWSz12eUQvNd36wYXjQmKxa9AKp/gCUA0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=umHWR6Y/Sf/QLJ/f6e06U0rskGPhfTvyUCEOma3QHtRvTsPUkmD1SXGE0P0arPchcz 81WAznalpjr0hNsBlbNsTPoCPgQ8mfvrCAXZIs2uAPgBXJTYB6fGsmD4HwPRT5SAZ+Eb 89qThetLN1vekNhniLvgtSRIsZ2oZ+SW2T6SU= MIME-Version: 1.0 Received: by 10.101.131.22 with SMTP id i22mr9523972ann.92.1268051392907; Mon, 08 Mar 2010 04:29:52 -0800 (PST) Date: Mon, 8 Mar 2010 14:29:52 +0200 Message-ID: From: Dan Naumov To: FreeBSD-STABLE Mailing List , Jeremy Chadwick , Attilio Rao Content-Type: text/plain; charset=ISO-8859-1 Cc: Subject: RE: powerd on 8.0, is it considered safe? 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: Mon, 08 Mar 2010 12:29:54 -0000 >Up until this point, I wasn't using powerd on this new Atom D510 >system. I ran sysctl and noticed that dev.cpu.0.freq: is actually 1249 >and doesn't change no matter what kind of load the system is under. If >I boot to BIOS, under BIOS CPU is shown as 1,66 Ghz. Okayy... I guess >this explains why my buildworld and buildkernel took over 5 hours if >by default, it gets stuck at 1249 Mhz for no obvious reason. I enabled >powerd and now according to dev.cpu.0.freq:, the system is permanently >stuck at 1666 Mhz, regardless of whether the system is under load or >not. OK, a reboot somehow fixed the powerd issue: 1) Disabled powerd 2) Rebooted 3) Upon bootup, checked dev.cpu.0.freq - it's stuck at 1249 (should be 1666 by default) 4) Enabled and started powerd - CPU scales correctly according to load There is some bug somewhere though, because something puts my CPU to 1249 Mhz upon boot with powerd disabled and it gets stuck there, this shouldn't happen. - Sincerely, Dan Naumov