Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756506Ab0GaUHO (ORCPT ); Sat, 31 Jul 2010 16:07:14 -0400 Received: from mail-iw0-f174.google.com ([209.85.214.174]:39367 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754533Ab0GaUHL (ORCPT ); Sat, 31 Jul 2010 16:07:11 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=eZ56d2yHUd6OQ5RDLvwT47PsB8wzbbZ03M8tRgzwsEHW9GP30Z5K5Hxj+VD7Tbng5B IgRafdUorn6Z3y1UD9HQ8rlYWZ+vhzATyOIiI3qY/4N64mHF5l+fzhJvvIadXaHjf4Sr cWYVBkUk3zv9bpEcxp+SqnGoT6n2mXxGD+q3Y= MIME-Version: 1.0 In-Reply-To: <1280282802-10618-2-git-send-email-johnstul@us.ibm.com> References: <1280282802-10618-1-git-send-email-johnstul@us.ibm.com> <1280282802-10618-2-git-send-email-johnstul@us.ibm.com> Date: Sun, 1 Aug 2010 05:07:10 +0900 Message-ID: Subject: Re: [RFC][PATCH 2/2] Greatly improve TSC calibration using a timer From: "Kuwahara,T." <6vvetjsrt26xsrzlh1z0zn4d2grdah@gmail.com> To: John Stultz Cc: LKML , Thomas Gleixner , Martin Schwidefsky , Clark Williams , Andi Kleen Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 562 Lines: 15 Hi John, How about using the O'Rourke's algorithm? It's much faster and accurate even if an SMI disturbance occurred during the calibration process. Reference O'Rourke, J. (1981). An on-line algorithm for fitting straight lines between data ranges. Communications of the ACM, 24, 574-578. doi:10.1145/358746.358758 -- 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/