From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261721AbVGIUa4 (ORCPT ); Sat, 9 Jul 2005 16:30:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261722AbVGIUa4 (ORCPT ); Sat, 9 Jul 2005 16:30:56 -0400 Received: from chretien.genwebhost.com ([209.59.175.22]:3762 "EHLO chretien.genwebhost.com") by vger.kernel.org with ESMTP id S261721AbVGIUay (ORCPT ); Sat, 9 Jul 2005 16:30:54 -0400 Date: Sat, 9 Jul 2005 13:30:36 -0700 From: randy_dunlap To: Lee Revell Cc: akpm@osdl.org, arjan@infradead.org, azarah@nosferatu.za.org, cw@f00f.org, linux-kernel@vger.kernel.org, torvalds@osdl.org, christoph@lameter.org Subject: Re: [PATCH] i386: Selectable Frequency of the Timer Interrupt Message-Id: <20050709133036.11e60a3c.rdunlap@xenotime.net> In-Reply-To: <1120936561.6488.84.camel@mindpipe> References: <200506231828.j5NISlCe020350@hera.kernel.org> <20050708214908.GA31225@taniwha.stupidest.org> <20050708145953.0b2d8030.akpm@osdl.org> <1120928891.17184.10.camel@lycan.lan> <1120932991.6488.64.camel@mindpipe> <1120933916.3176.57.camel@laptopd505.fenrus.org> <1120934163.6488.72.camel@mindpipe> <20050709121212.7539a048.akpm@osdl.org> <1120936561.6488.84.camel@mindpipe> Organization: YPO4 X-Mailer: Sylpheed version 1.0.5 (GTK+ 1.2.10; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-ClamAntiVirus-Scanner: This mail is clean X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - chretien.genwebhost.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [0 0] / [47 12] X-AntiAbuse: Sender Address Domain - xenotime.net X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 09 Jul 2005 15:16:01 -0400 Lee Revell wrote: | On Sat, 2005-07-09 at 12:12 -0700, Andrew Morton wrote: | > Lee Revell wrote: | > > | > > > This is not a userspace visible thing really with few exceptions, and | > > > well people can select the one they want, right? | > > | > > Then why not leave the default at 1000? | > | > Because some machines exhibit appreciable latency in entering low power | > state via ACPI, and 1000Hz reduces their battery life. By about half, | > iirc. | > | | Then the owners of such machines can use HZ=250 and leave the default | alone. Why should everyone have to bear the cost? indeed, why should everyone have to have 1000 timer interrupts per second? --- ~Randy