From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758598AbYDKWJp (ORCPT ); Fri, 11 Apr 2008 18:09:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756158AbYDKWJh (ORCPT ); Fri, 11 Apr 2008 18:09:37 -0400 Received: from web52502.mail.re2.yahoo.com ([206.190.48.185]:20913 "HELO web52502.mail.re2.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1756025AbYDKWJg (ORCPT ); Fri, 11 Apr 2008 18:09:36 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID; b=UJCA5mBTFFK9066/o1WZaHFP+oqUCWeSzOwMgE1BhCGyAZ4g8CGfHGR7BGObpIwjfrZPG6/mx90JBa2JV+g2TBDL9+E66uXYXYWgVYmPjRoiM5kgsIcE68N0TQPBjUL/Ixr5Z7H9o6CZkxroL5rrbHSon58uOxbgJy6G0pOYSsE=; X-YMail-OSG: zh2AnvsVM1l9wOo77K0aAToUVn87lUz0tC32hK1ttgeIwoa7.SqZvwPr34h6tQezvhw7nXdNOKvhcjkuiLxh7rEfw3AdfbUuYEsCf0LMvoZl2NE.YicLigkElJo7gwL4_vHaCaow6_3ySFXD7IHDPjkp Date: Fri, 11 Apr 2008 15:09:35 -0700 (PDT) From: Marc Perkel Subject: Re: AMD Quad Core clock problem? To: Chris Snook Cc: linux-kernel@vger.kernel.org In-Reply-To: <47FFD3F3.50107@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Message-ID: <735874.9676.qm@web52502.mail.re2.yahoo.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --- Chris Snook wrote: > If it's steadily losing a few seconds every hour, > it's probably just > slightly mis-calibrated hardware. ntp should fix > this right up. If the > drift is more extreme than ntp can correct for, or > the drift keeps > changing, or time is jumping around, that is > definitely something that > could be a bug. > > > hpet clockevent registered > > TSC calibrated against HPET > > Marking TSC unstable due to TSCs unsynchronized > > It's possible that in future kernels we'll be a few > clock cycles more > accurate in calibrating this on Barcelona chips, but > calibration is only > as good as the standard of comparison. There will > always be hardware > that's slightly off, so run ntp, or use a nightly > ntpdate cronjob. If > your time starts drifting drastically or jumping > around, please yell > really loud. > > -- Chris > Is it possible due to calibration that ntpd isn't able to correct the problem? Is there a setting to make ntp more agressive? Marc Perkel Junk Email Filter dot com http://www.junkemailfilter.com __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com