From owner-freebsd-stable@FreeBSD.ORG Mon Mar 8 14:53:41 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 97CCC106566B for ; Mon, 8 Mar 2010 14:53:41 +0000 (UTC) (envelope-from mavbsd@gmail.com) Received: from mail-fx0-f223.google.com (mail-fx0-f223.google.com [209.85.220.223]) by mx1.freebsd.org (Postfix) with ESMTP id 1DFA98FC17 for ; Mon, 8 Mar 2010 14:53:40 +0000 (UTC) Received: by fxm23 with SMTP id 23so4841700fxm.3 for ; Mon, 08 Mar 2010 06:53:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:message-id:date:from :user-agent:mime-version:to:cc:subject:references:in-reply-to :content-type:content-transfer-encoding; bh=V7tkZ9z2WVcwPTck8arpXHWyGZAwKXiqPzQP2iEHnck=; b=sqGo2rW4+3ADzv0BI1HR+HBP+Ts1xS2mQy9cCVtcFBvjzx9jSTBtNY4NhJgwngwHrG aQrRvnecBbDKWBvxTS5ksMgNn9pWqeenCyYkpmYzLGcAkNiYjA7I4C/0c6tQqsaPZM4X Rv4879VePzHcEXc5PQXKfEH9Udtqe07JKGoDQ= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=PBiV+mBnc4ursvN/o8WpKgb2mZco3gqqAaeY1U3IFolpYfo7sXH/+RJcu4KPywkEt8 wJkIuJrX7EalwTN/TRho5xWhSIxcdet289EepF/7MXCljSTaUA5xAZLwdblmJrGY/u2M Gyg8jLA+6IqyfIAH+M1AqTk72SLi4YtbsF/Yc= Received: by 10.223.64.141 with SMTP id e13mr5840753fai.101.1268060019937; Mon, 08 Mar 2010 06:53:39 -0800 (PST) Received: from mavbook.mavhome.dp.ua (pc.mavhome.dp.ua [212.86.226.226]) by mx.google.com with ESMTPS id 14sm2920963fxm.5.2010.03.08.06.53.38 (version=SSLv3 cipher=RC4-MD5); Mon, 08 Mar 2010 06:53:39 -0800 (PST) Sender: Alexander Motin Message-ID: <4B950F70.8030601@FreeBSD.org> Date: Mon, 08 Mar 2010 16:53:36 +0200 From: Alexander Motin User-Agent: Thunderbird 2.0.0.23 (X11/20091212) MIME-Version: 1.0 To: Jeremy Chadwick References: <1268058181.00227122.1268045402@10.7.7.3> <1268058195.00227162.1268047203@10.7.7.3> In-Reply-To: <1268058195.00227162.1268047203@10.7.7.3> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-stable@freebsd.org 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 14:53:41 -0000 Jeremy Chadwick wrote: > I should note that on RELENG_7, EIST/SpeedStep didn't appear to work > properly (cpufreq(4) driver reporting that the est piece wouldn't > attach), which historically (for me) has resulted in ACPI throttling > being done (which works). Based on the sysctl output below, I believe > acpi_perf is in use, but I'm not 100% certain. The man page doesn't > really disclose how to determine which driver is in use. > > The X7SBA system in question is below. Be aware I limit the lowest > clock frequency to 1500MHz using debug.cpufreq.lowest="1500" in > /boot/loader.conf, which is why you don't see anything lower in > freq_levels. > > dev.est.0.freq_settings: 3000/35000 2667/28000 2333/22000 2000/16000 This is the real set of EIST supported levels. > dev.cpu.0.freq_levels: 3000/35000 2667/28000 2333/22000 2041/19250 2000/16000 1750/14000 1500/12000 All the rest of these are throttling. I would recommend you to disable it by setting: hint.p4tcc.0.disabled=1 hint.acpi_throttle.0.disabled=1 -- Alexander Motin