From owner-freebsd-questions@FreeBSD.ORG Mon Nov 3 18:15:54 2003 Return-Path: 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 06F2F16A4CE for ; Mon, 3 Nov 2003 18:15:54 -0800 (PST) Received: from anon.securenym.net (anon.securenym.net [209.113.101.100]) by mx1.FreeBSD.org (Postfix) with ESMTP id F0CEC43F85 for ; Mon, 3 Nov 2003 18:15:52 -0800 (PST) (envelope-from dincht@securenym.net) Received: (from root@localhost) by anon.securenym.net (8.11.7/8.11.7) id hA42CDF07846 for freebsd-questions@freebsd.org.filtered; Mon, 3 Nov 2003 20:12:13 -0600 (CST) Message-Id: <200311040212.hA42CDF07846@anon.securenym.net> X-Securenym: dincht From: "C. Ulrich" To: nw1 In-Reply-To: <000901c3a25b$454e7840$0300a8c0@install> References: <000901c3a25b$454e7840$0300a8c0@install> Content-Type: text/plain Organization: The Peter Jennings Fan Club Mime-Version: 1.0 Date: Mon, 03 Nov 2003 22:10:17 -0500 Content-Transfer-Encoding: 7bit cc: freebsd-questions@freebsd.org Subject: Re: Overheating attributed to Freebsd --sysctl variables not available-- X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 04 Nov 2003 02:15:54 -0000 On Mon, 2003-11-03 at 17:38, nw1 wrote: > The problem can be viewed @: > http://69.3.136.141/freebsd/installation/sysctl_variables_missing > > Basically, the machine is overheating (I believe) because the cpu's aren't cycling down. > Previously I was able to cycle the processors down with the following sysctl variables: > > machdep.apm_suspend_delay: > machdep.apm_standby_delay: > > however, for some reason those variables currently, aren't any where to be found by the > up_and_running system. Please use the hyperlink above for details. > > Thanks for reading. All feedback is welcome. Okay, this piqued my curiosity enough that I took a look at the message in the URL above. Conclusion: FreeBSD doesn't even enter into it. The ONLY good solution to this is to get better physical cooling of the CPUs (or the entire box if you have to). Otherwise, you're still going to run into problems whenever there's a full system load. Chances are, they're still running way too hot even if they're not crashing the system. This will only result in premature failure of the processors. Take it from the close friend of an overclocker. :) If the machine is crashing (you only say "overheating", which could mean either crashing or just getting dangerously hot), then I would even go so far as to say that there's a possibility that the stability of the processors is already decreasing, leading to the more recent crashes. Charles Ulrich -- http://bityard.net