From owner-freebsd-stable@FreeBSD.ORG Wed May 2 12:09:16 2007 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id D2FD116A407 for ; Wed, 2 May 2007 12:09:16 +0000 (UTC) (envelope-from martin.dieringer@gmx.de) Received: from mail.gmx.net (mail.gmx.net [213.165.64.20]) by mx1.freebsd.org (Postfix) with SMTP id 3867A13C457 for ; Wed, 2 May 2007 12:09:16 +0000 (UTC) (envelope-from martin.dieringer@gmx.de) Received: (qmail invoked by alias); 02 May 2007 12:09:14 -0000 Received: from c-134-225-153.d.dsl.de.ignite.net (EHLO dieringer.dyndns.org) [62.134.225.153] by mail.gmx.net (mp048) with SMTP; 02 May 2007 14:09:14 +0200 X-Authenticated: #21464393 X-Provags-ID: V01U2FsdGVkX19KCcst0RVKAWlNBVDeSjq2CLhdEnCFYXxGLhU4kS s7DclB86AfDUDy Received: (qmail 3873 invoked by uid 1001); 2 May 2007 12:09:12 -0000 Received: from localhost (sendmail-bs@127.0.0.1) by localhost with SMTP; 2 May 2007 12:09:12 -0000 Date: Wed, 2 May 2007 14:09:12 +0200 (CEST) From: Martin Dieringer To: Ian Smith In-Reply-To: <20070502132901.L860@thinkpad.dieringer.dyndns.org> Message-ID: <20070502140536.K860@thinkpad.dieringer.dyndns.org> References: <20070502132901.L860@thinkpad.dieringer.dyndns.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Y-GMX-Trusted: 0 Cc: Clayton Milos , freebsd-stable@freebsd.org, Jeremy Chadwick Subject: Re: clock too slow - big time offset with ntpdate X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Martin Dieringer List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 May 2007 12:09:16 -0000 On Wed, 2 May 2007, Martin Dieringer wrote: > On Wed, 2 May 2007, Ian Smith wrote: > >> On Wed, 2 May 2007, Martin Dieringer wrote: >> > On Tue, 1 May 2007, Martin Dieringer wrote: >> > >> > > On Tue, 1 May 2007, Clayton Milos wrote: >> > > >> > >>> Hi, >> > >>> >> > >>> I get about half a second time offsets after 10 seconds, and more >> > >>> than 100s after half an hour or so. >> > >>> I think it has to do with powerd, if I kill that, the time stays >> correct. >> > >>> It happens both on a Compaq nc4000 and an IBM ThinkPad T42p laptop. >> > >>> >> > >>> Can this be solved? >> > >>> thanks >> > >>> m. >> > >> >> > >> This has got to do with the speed stepping of the CPU to save battery. >> > >> Far as I know there's no fix yet. >> > >> >> > >> Guys is it possible to hack powerd to change a sysctl variable when it >> > >> changes the CPU frequency or isn't it that simple? >> > > >> > > >> > > Another effect of the problem seems to be the intermittent sound >> > > output. Playback is ok when powerd is killed. >> > > When changing freq by sysctl, I still get hickups in sound, so this >> > > would be no solution. >> > >> > the hiccups have reappeared, so they are not related to powerd. >> > >> > I still have 0.5 seconds time offsets after 10 minutes, on the >> > thinkpad, without powerd... >> >> I'm wondering if this might have to do with power_profile's settings of >> hw.acpi.cpu.cx_lowest when moving from AC to battery power? > > > I don't have these values, are they ACPI? > I switched off ACPI on both machines, but I use APM. Might this have to do with it? Now I got following while playing sound on the Compaq: kernel: calcru: runtime went backwards from 183711700 usec to 183167434 usec for pid 12 (swi4: clock sio) here I have a working clock, but also intermittent sound output m.