From owner-freebsd-stable@FreeBSD.ORG Fri Feb 12 19:58:21 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 8FBC1106570A for ; Fri, 12 Feb 2010 19:58:21 +0000 (UTC) (envelope-from fullermd@over-yonder.net) Received: from thyme.infocus-llc.com (server.infocus-llc.com [206.156.254.44]) by mx1.freebsd.org (Postfix) with ESMTP id 6308B8FC0C for ; Fri, 12 Feb 2010 19:58:21 +0000 (UTC) Received: from draco.over-yonder.net (c-75-65-60-123.hsd1.ms.comcast.net [75.65.60.123]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by thyme.infocus-llc.com (Postfix) with ESMTPSA id 0C36437B628; Fri, 12 Feb 2010 13:58:20 -0600 (CST) Received: by draco.over-yonder.net (Postfix, from userid 100) id 5674161C41; Fri, 12 Feb 2010 13:58:19 -0600 (CST) Date: Fri, 12 Feb 2010 13:58:19 -0600 From: "Matthew D. Fuller" To: Jeremy Chadwick Message-ID: <20100212195819.GI64395@over-yonder.net> References: <20100211190652.6a66c618.torfinn.ingolfsen@broadpark.no> <20100211192515.GB13854@icarus.home.lan> <20100212132947.eb2af3d0.torfinn.ingolfsen@broadpark.no> <20100212131117.GA51905@icarus.home.lan> <20100212174452.2140cd72.torfinn.ingolfsen@broadpark.no> <20100212194604.GA73961@icarus.home.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100212194604.GA73961@icarus.home.lan> X-Editor: vi X-OS: FreeBSD User-Agent: Mutt/1.5.20-fullermd.4 (2009-06-14) X-Virus-Scanned: clamav-milter 0.95.3 at thyme.infocus-llc.com X-Virus-Status: Clean Cc: Torfinn Ingolfsen , freebsd-stable@freebsd.org Subject: Re: ntpd struggling to keep up - how to fix? 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: Fri, 12 Feb 2010 19:58:21 -0000 On Fri, Feb 12, 2010 at 11:46:04AM -0800 I heard the voice of Jeremy Chadwick, and lo! it spake thus: > > Technical footnote: I wish I understood 1) the difference between > ACPI-safe and ACPI-fast, AIUI, they're nearly the same thing, and it has to do with some testing to determine how it can be reliably accessed. I've had systems that would sometimes come up with -fast, and other times -safe (I think one varied depending on cold vs. warm boot for instance). > and 2) how the system or OS "ranks" the timecounters (the higher the > value in parenthesis, supposedly the more accurate/preferred it is). That's easier; TTBOMK, they're hardcoded in the source based on developer SWAG about their relative expenses and reliabilities and precisions. -- Matthew Fuller (MF4839) | fullermd@over-yonder.net Systems/Network Administrator | http://www.over-yonder.net/~fullermd/ On the Internet, nobody can hear you scream.