From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764318AbYDOCl0 (ORCPT ); Mon, 14 Apr 2008 22:41:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760539AbYDOClT (ORCPT ); Mon, 14 Apr 2008 22:41:19 -0400 Received: from terminus.zytor.com ([198.137.202.10]:49211 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759827AbYDOClS (ORCPT ); Mon, 14 Apr 2008 22:41:18 -0400 Message-ID: <480415AB.2070308@zytor.com> Date: Mon, 14 Apr 2008 19:40:43 -0700 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.12 (X11/20080226) MIME-Version: 1.0 To: Krzysztof Halasa CC: Lennart Sorensen , Marc Perkel , Chris Snook , linux-kernel@vger.kernel.org Subject: Re: AMD Quad Core clock problem? References: <47FFD3F3.50107@redhat.com> <821384.64293.qm@web52504.mail.re2.yahoo.com> <20080411213843.GH2160@csclub.uwaterloo.ca> <4802608A.3040901@zytor.com> <20080414151222.GF7385@csclub.uwaterloo.ca> <480403DE.4070901@zytor.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Krzysztof Halasa wrote: > "H. Peter Anvin" writes: > >> It shouldn't really matter, since "below" produces a similar spectrum >> at a slightly lower frequency. > > Sure for CPU/TSC and similar clocks but in case of well-known (not > calibrated) frequency it could be a problem. Not sure if there are > such cases. There is - the 14.31818 MHz clock, but as previously noted it is generally not spread. If *that* clock is spread I would expect problems. -hpa