From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264400AbTLKHS3 (ORCPT ); Thu, 11 Dec 2003 02:18:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264405AbTLKHS3 (ORCPT ); Thu, 11 Dec 2003 02:18:29 -0500 Received: from citrine.spiritone.com ([216.99.193.133]:61659 "EHLO citrine.spiritone.com") by vger.kernel.org with ESMTP id S264400AbTLKHSZ (ORCPT ); Thu, 11 Dec 2003 02:18:25 -0500 Date: Wed, 10 Dec 2003 23:18:20 -0800 From: "Martin J. Bligh" To: Jean-Marc Valin cc: Linux Kernel Subject: Re: Increasing HZ (patch for HZ > 1000) Message-ID: <1293500000.1071127099@[10.10.2.4]> In-Reply-To: <1071126929.5149.24.camel@idefix.homelinux.org> References: <1071122742.5149.12.camel@idefix.homelinux.org><1288980000.1071126438@[10.10.2.4]> <1071126929.5149.24.camel@idefix.homelinux.org> X-Mailer: Mulberry/2.2.1 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >> Why would you want to *increase* HZ? I'd say 1000 is already too high >> personally, but I'm curious what you'd want to do with it? Embedded >> real-time stuff? > > Actually, my reasons may sound a little strange, but basically I'd be > fine with HZ=1000 if it wasn't for that annoying ~1 kHz sound when the > CPU is idle (probably bad capacitors). By increasing HZ to 10 kHz, the > sound is at a frequency where the ear is much less sensitive. Anyway, I > thought some people might be interested in high HZ for other (more > fundamental) reasons, so I posted the patch. Ha! ;-) A hardware fix might be in order ;-) M.