From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161754AbXDXNIA (ORCPT ); Tue, 24 Apr 2007 09:08:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161753AbXDXNIA (ORCPT ); Tue, 24 Apr 2007 09:08:00 -0400 Received: from nz-out-0506.google.com ([64.233.162.237]:50505 "EHLO nz-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161755AbXDXNH6 (ORCPT ); Tue, 24 Apr 2007 09:07:58 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=QwL0WE4D9zsQSGOjv8Qv6mkgmVZKlgPuSgaClUuwr98YF1b35QIIswDyqSiFGLu3ViRICILh1vtBPc6F68iZZef5yXoses3rZP2zK/iEXYiIUXFJKqBI8aW1KGmiUbqgFaYBi3VXDqs3q47puLuGXGaM/9oZIFGZnYrBuCpZiH8= Message-ID: <6bffcb0e0704240607s2e9b308dx448b5f477b8325e@mail.gmail.com> Date: Tue, 24 Apr 2007 15:07:57 +0200 From: "Michal Piotrowski" To: "William Heimbigner" Subject: Re: cpufreq default governor Cc: linux-kernel@vger.kernel.org In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <6bffcb0e0704240134w45007473p5694718a0aae08fc@mail.gmail.com> <6bffcb0e0704240550x2c47cd1ap8101a9b0db5c6c7d@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 24/04/07, William Heimbigner wrote: > On Tue, 24 Apr 2007, Michal Piotrowski wrote: > > > On 24/04/07, William Heimbigner wrote: > >> On Tue, 24 Apr 2007, Michal Piotrowski wrote: > >> > >> > Hi William, > >> > > >> > On 24/04/07, William Heimbigner wrote: > >> > > Question: is there some reason that kconfig does not allow for > >> > > default > >> > > governors of conservative/ondemand/powersave? > >> > > >> > Performance? > >> > > >> > > I'm not aware of any reason why one of those governors could not be > >> > > used > >> > > as default. > >> > > >> > My hardware doesn't work properly with ondemand governor. I hear > >> > strange noises when frequency is changed. > >> > > >> > >> That doesn't mean it isn't working, though. > > > > I didn't say that cpufreq ondemand is broken. It's a hardware problem. > > > >> I here weird noises if the cpu > >> is clocked anywhere from 333MHz to 1GHz (sounds like an RD-D2 beeping > >> noises in ultra high pitch?) > > > > Yes, something like that. > > Is it actually "not working" though, even at the hardware level? It works, but for me this sounds are very weird ;) > To my > knowledge those noises are normal, and aren't even signs of a harware > problem. I believe it is the natural result of changing frequencies at any > time. If you change frequencies, especially in the low end of available > frequencies, you should hear a very brief noise. A governor such as > ondemand, which is rapidly switching the frequency from say, 333 MHz to > 2.66 GHz, is likely to make this much more noticable. Ok, it might be normal behavior. I might be wrong, but IMO users prefer speed and no strange sounds as default setting. > > William Heimbigner > icxcnika@mar.tar.cc > Regards, Michal -- Michal K. K. Piotrowski LTG - Linux Testers Group (PL) (http://www.stardust.webpages.pl/ltg/) LTG - Linux Testers Group (EN) (http://www.stardust.webpages.pl/linux_testers_group_en/)