Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751331AbWJQRHv (ORCPT ); Tue, 17 Oct 2006 13:07:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751335AbWJQRHv (ORCPT ); Tue, 17 Oct 2006 13:07:51 -0400 Received: from smtp-vbr8.xs4all.nl ([194.109.24.28]:62993 "EHLO smtp-vbr8.xs4all.nl") by vger.kernel.org with ESMTP id S1751331AbWJQRHv (ORCPT ); Tue, 17 Oct 2006 13:07:51 -0400 Message-ID: <45350DDF.10102@xs4all.nl> Date: Tue, 17 Oct 2006 19:07:43 +0200 From: Udo van den Heuvel User-Agent: Thunderbird 1.5.0.7 (Windows/20060909) MIME-Version: 1.0 To: Lee Revell CC: linux-kernel@vger.kernel.org Subject: Re: 2.6.18 w/ GPS time source: worse performance References: <4534F5F7.8020003@xs4all.nl> <1161103616.2919.70.camel@mindpipe> In-Reply-To: <1161103616.2919.70.camel@mindpipe> X-Enigmail-Version: 0.94.0.0 OpenPGP: id=8300CC02 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 641 Lines: 17 Lee Revell wrote: > On Tue, 2006-10-17 at 17:25 +0200, Udo van den Heuvel wrote: >> Hello, >> >> Why does a GPS as time source (with ntpd) perform so much worse with 2.6.18? > > Um... you don't give nearly enough information to even begin to know > what you're talking about. ? Offset, error and jitter are higher. That's the performance. I guess that users of a GPS as clock source understand. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/