From owner-freebsd-questions@FreeBSD.ORG Mon Apr 7 23:49:26 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 88DF237B401 for ; Mon, 7 Apr 2003 23:49:26 -0700 (PDT) Received: from mailhub02.unibe.ch (mailhub02.unibe.ch [130.92.9.53]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9B68743F85 for ; Mon, 7 Apr 2003 23:49:25 -0700 (PDT) (envelope-from roth@iam.unibe.ch) Received: from localhost (localhost [127.0.0.1]) by mailhub02.unibe.ch (Postfix) with ESMTP id D35B676755; Tue, 8 Apr 2003 08:49:24 +0200 (MEST) Received: from mailhub02.unibe.ch ([127.0.0.1]) by localhost (mailhub02 [127.0.0.1:10024]) (amavisd-new) with LMTP id 04437-01-16; Tue, 8 Apr 2003 08:49:24 +0200 (MEST) Received: from asterix.unibe.ch (asterix.unibe.ch [130.92.64.4]) by mailhub02.unibe.ch (Postfix) with ESMTP id 61CEA7674B; Tue, 8 Apr 2003 08:49:24 +0200 (MEST) Received: from speedy.unibe.ch (speedy [130.92.64.35]) by asterix.unibe.ch (8.11.6+Sun/8.11.6) with ESMTP id h386nOK20008; Tue, 8 Apr 2003 08:49:24 +0200 (MET DST) Received: (from roth@localhost) by speedy.unibe.ch (8.11.6+Sun/8.10.2) id h386nNr21667; Tue, 8 Apr 2003 08:49:23 +0200 (MEST) Date: Tue, 8 Apr 2003 08:49:23 +0200 From: Tobias Roth To: Nicholas Basila Message-ID: <20030408064923.GA21535@speedy.unibe.ch> References: <20030407071722.GC4573@speedy.unibe.ch> <200304071247.13863.mlists@northglobe.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200304071247.13863.mlists@northglobe.com> User-Agent: Mutt/1.4i X-Operating-System: SunOS speedy 5.8 Generic_108528-16 sun4u sparc SUNW,Ultra-80 X-Virus-checked: by University of Berne cc: freebsd-questions@freebsd.org Subject: Re: find out current CPU frequency 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, 08 Apr 2003 06:49:26 -0000 > > I would like to find out what the current CPU frequency is on my > > laptop. I strongly suspect that my laptop, as well as many other > > models, pretty much permanently run on degraded performance, even > > when under full load. > > > > At the moment, I use both 4.8 and 5.0 Release with apm, but I plan > > to upgrade tocurrent soon. > dmesg | grep CPU > Isn't that good enough? Or do you mean after boot? no. that is the maximum frequency the cpu runs at, which is fixed. with intels speedstep there is a possibility that the cpu runs at a lower frequency than that, depending on the current load. the idea behind it is this: high load -> high freq -> high power consumption, more fan activity low load -> lower freq -> lower power consumption, less fan activity linprocfs for instance always shows a current cpu freq of 1.1something GHZ on my 1.8GHz P4. however I have no idea how representative that is. i strongly suspect that most modern laptops constantly run under a lower than max frequency, and I would like to know a way to check this. greets, t.