From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261824AbULOC72 (ORCPT ); Tue, 14 Dec 2004 21:59:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261827AbULOC72 (ORCPT ); Tue, 14 Dec 2004 21:59:28 -0500 Received: from out010pub.verizon.net ([206.46.170.133]:54665 "EHLO out010.verizon.net") by vger.kernel.org with ESMTP id S261824AbULOC7Y (ORCPT ); Tue, 14 Dec 2004 21:59:24 -0500 From: Gene Heskett Reply-To: gene.heskett@verizon.net Organization: Organization: None, detectable by casual observers To: linux-kernel@vger.kernel.org Subject: Re: USB making time drift [was Re: dynamic-hz] Date: Tue, 14 Dec 2004 21:59:23 -0500 User-Agent: KMail/1.7 Cc: Andrea Arcangeli , Pavel Machek , Zwane Mwaikambo , Con Kolivas References: <20041213002751.GP16322@dualathlon.random> <20041214220239.GA19221@elf.ucw.cz> <20041214231649.GR16322@dualathlon.random> In-Reply-To: <20041214231649.GR16322@dualathlon.random> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200412142159.23488.gene.heskett@verizon.net> X-Authentication-Info: Submitted using SMTP AUTH at out010.verizon.net from [151.205.42.94] at Tue, 14 Dec 2004 20:59:23 -0600 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tuesday 14 December 2004 18:16, Andrea Arcangeli wrote: >On Tue, Dec 14, 2004 at 11:02:39PM +0100, Pavel Machek wrote: >> How much drift do you see? > >huge drift, minutes per hour or similar. Which way? I was running quite fast here, several minutes an hour, then I discovered the tickadj command, found its default was 10000, and started reducing it. At 9926, I'm staying within a sec an hour now. I have no idea when this started, I didn't discover it till I had already been running Ingo's realtime patches for a while, then checked with a stock 2.6.9 and found it was doing it then. [...] -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) 99.30% setiathome rank, not too shabby for a WV hillbilly Yahoo.com attorneys please note, additions to this message by Gene Heskett are: Copyright 2004 by Maurice Eugene Heskett, all rights reserved.