From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932397AbZEEAac (ORCPT ); Mon, 4 May 2009 20:30:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758365AbZEEAaM (ORCPT ); Mon, 4 May 2009 20:30:12 -0400 Received: from mx2.redhat.com ([66.187.237.31]:42270 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757254AbZEEAaK (ORCPT ); Mon, 4 May 2009 20:30:10 -0400 Message-ID: <49FF87F1.4090403@redhat.com> Date: Mon, 04 May 2009 20:27:29 -0400 From: Rik van Riel Organization: Red Hat, Inc User-Agent: Thunderbird 2.0.0.17 (X11/20080915) MIME-Version: 1.0 To: john stultz CC: lkml , Roman Zippel , Thomas Gleixner , Clark Williams , linux@horizon.com, Ulrich Windl Subject: Re: [RFC][PATCH] Adjust SHIFT_PLL to improve NTP convergence. References: <1241471016.7444.80.camel@localhost.localdomain> In-Reply-To: <1241471016.7444.80.camel@localhost.localdomain> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org john stultz wrote: > With the v2.6.19 Linux kenrel, Roman converted the in-kernel NTP code to > the NTPv4 reference model. > I then modified the SHIFT_PLL value (which defines how stiff NTP's freq > correction is), setting it to 2, and created the second attached image > (2.6.30-pll2.png), comparing against the 2.6.18 numbers in the first > chart. > Signed-off-by: John Stultz Acked-by: Rik van Riel -- All rights reversed.