From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030189AbVHJS6x (ORCPT ); Wed, 10 Aug 2005 14:58:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030192AbVHJS6w (ORCPT ); Wed, 10 Aug 2005 14:58:52 -0400 Received: from prgy-npn1.prodigy.com ([207.115.54.37]:28421 "EHLO oddball.prodigy.com") by vger.kernel.org with ESMTP id S1030189AbVHJS6w (ORCPT ); Wed, 10 Aug 2005 14:58:52 -0400 Message-ID: <42FA4ECD.1070108@tmr.com> Date: Wed, 10 Aug 2005 15:00:29 -0400 From: Bill Davidsen User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050511 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Lee Revell CC: James Bruce , Marc Ballarin , linux-kernel@vger.kernel.org Subject: Re: Power consumption HZ100, HZ250, HZ1000: new numbers References: <20050730120645.77a33a34.Ballarin.Marc@gmx.de> <1122746718.14769.4.camel@mindpipe> <20050730195116.GB9188@elf.ucw.cz> <1122753864.14769.18.camel@mindpipe> <20050730201049.GE2093@elf.ucw.cz> <42ED32D3.9070208@andrew.cmu.edu> <20050731211020.GB27433@elf.ucw.cz> <42ED4CCF.6020803@andrew.cmu.edu> <20050731224752.GC27580@elf.ucw.cz> <1122852234.13000.27.camel@mindpipe> <20050731232941.GG27580@elf.ucw.cz> <1122854036.13000.33.camel@mindpipe> In-Reply-To: <1122854036.13000.33.camel@mindpipe> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Lee Revell wrote: > On Mon, 2005-08-01 at 01:29 +0200, Pavel Machek wrote: > >>Hi! >> >> >>>>I'm pretty sure at least one distro will go with HZ<300 real soon now >>>>;-). >>>> >>> >>>Any idea what their official recommendation for people running apps that >>>require the 1ms sleep resolution is? Something along the lines of "Get >>>bent"? >> >>So you busy wait for 1msec, big deal. > > > Which requires changing all those apps. I thought we tried not to break > userspace with minor kernel version upgrades. Sounds like you were wrong. This whole thing is silly, I'm very aware of battery life issues, but in real ues we are talking about maybe 3% more battery life. People who are totally anal about it will build their own kernel, or use a vendor kernel with varioble tick rate, but saving <2BTU/hr is not going to let anyone buy a smaller A/C unit. The computer user gives off way more than that. I would leave it at 1k and push for variable tick, which should make everyone happy. > > >>Some machines can't even keep time properly with HZ=1000. > > > If your workaround for broken hardware involves screwing over people > with good hardware, it might be the wrong workaround. > > >> Official recommendation is likely "help us >>with CONFIG_NO_IDLE_HZ" or "get over it". > > > IOW, "if you don't like it, get another distro, or compile your own > kernel". > > Lee >