From owner-freebsd-stable@FreeBSD.ORG Sun Apr 24 19:40:19 2011 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 46A7A1065670 for ; Sun, 24 Apr 2011 19:40:19 +0000 (UTC) (envelope-from john@theusgroup.com) Received: from theusgroup.com (theusgroup.com [64.122.243.222]) by mx1.freebsd.org (Postfix) with ESMTP id 1A0BC8FC17 for ; Sun, 24 Apr 2011 19:40:18 +0000 (UTC) To: Bartosz Fabianowski In-reply-to: <4DB45D6C.20203@chillt.de> References: <4DA596D3.1090803@chillt.de> <4DB44DA3.5060509@chillt.de> <4DB4589B.2020909@ksu.ru> <4DB45D6C.20203@chillt.de> Comments: In-reply-to Bartosz Fabianowski message dated "Sun, 24 Apr 2011 19:27:08 +0200." Date: Sun, 24 Apr 2011 11:24:56 -0700 From: John Message-Id: <20110424182456.9DD03589@server.theusgroup.com> Cc: freebsd-stable@freebsd.org Subject: Re: System extremely slow under light load 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: Sun, 24 Apr 2011 19:40:19 -0000 >The CPU temperature is about 60°C-70°C when idle, 80°-90°C under light >load and exceeds 90°C under heavy load. All of these readings are >obtained from sysctl dev.cpu > >Yes, the CPU is very warm. But it does not appear to be critically hot. >The ACPI critical threshold is 95°C. It seems that this model (Dell >Studio 15) always runs that hot. I don't know which i7 you have, but the intel datasheet for the i7-870 states that the maximum case temperature is 72.7C. The reported cpu temperatures will be a little higher at this case temperature, maybe a few degrees. How much higher I can't say without knowing the thermal resistance. The i7-870 motherboard I have with a large cooler idles at about 40C. Under heavy load it runs at about 65C. John Theus