From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265193AbTLKRSl (ORCPT ); Thu, 11 Dec 2003 12:18:41 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265196AbTLKRSk (ORCPT ); Thu, 11 Dec 2003 12:18:40 -0500 Received: from out012pub.verizon.net ([206.46.170.137]:30339 "EHLO out012.verizon.net") by vger.kernel.org with ESMTP id S265193AbTLKRSi (ORCPT ); Thu, 11 Dec 2003 12:18:38 -0500 From: Gene Heskett Reply-To: gene.heskett@verizon.net To: "Martin J. Bligh" , Jean-Marc Valin Subject: Re: Increasing HZ (patch for HZ > 1000) Date: Thu, 11 Dec 2003 12:18:35 -0500 User-Agent: KMail/1.5.1 Cc: Linux Kernel References: <1071122742.5149.12.camel@idefix.homelinux.org> <1071126929.5149.24.camel@idefix.homelinux.org> <1293500000.1071127099@[10.10.2.4]> In-Reply-To: <1293500000.1071127099@[10.10.2.4]> Organization: None that appears to be detectable by casual observers MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200312111218.35254.gene.heskett@verizon.net> X-Authentication-Info: Submitted using SMTP AUTH at out012.verizon.net from [151.205.60.44] at Thu, 11 Dec 2003 11:18:36 -0600 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thursday 11 December 2003 02:18, Martin J. Bligh wrote: >>> 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 ;-) Indeed... I may have the only un-repaired Biostar M7VIB in the area out of several dozen. All the rest have had those 4 caps right above the AGP slot replaced already. And this one may also be the only one that doesn't get shut off at night. However it is also very unstable when starting from cold, needing 3-5 resets to even get through post without trashing the video after I had it apart to clean the cpu fan/sink and psu the other night. Its stable once thats been done, so I'm as usual, procrastinating. Been doing it for 69 years now. :) Hardware indeed. I'm a Certified Electronics Technician. Have someone check all those electrolyric caps in the on-board psu in particular, using a device similar to a "Capacitor Wizard" which measures not the capacity of the cap, but the caps Equivalent Series Resistance (ESR) at 100 kilohertz or more. Anything over half an ohm should be replaced forthwith. This assumes of course that your tech in charge of hot solder has the tools to do it correctly. If not, find one who does have the tools. Many mobos in a period ranging from about 2.5 to 1.5 years ago were built with caps that go defective prematurely due to a bad batch of them from several far eastern cap makers who were fed a bad recipe for the electrolyte in the caps, eg the Ethylene Glycol wasn't near pure enough. >M. > >- >To unsubscribe from this list: send the line "unsubscribe > linux-kernel" in the body of a message to majordomo@vger.kernel.org >More majordomo info at http://vger.kernel.org/majordomo-info.html >Please read the FAQ at http://www.tux.org/lkml/ -- Cheers, Gene AMD K6-III@500mhz 320M Athlon1600XP@1400mhz 512M 99.22% setiathome rank, not too shabby for a WV hillbilly Yahoo.com attornies please note, additions to this message by Gene Heskett are: Copyright 2003 by Maurice Eugene Heskett, all rights reserved.