From owner-svn-src-head@FreeBSD.ORG Sun Jul 11 15:03:01 2010 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6BC97106566B; Sun, 11 Jul 2010 15:03:01 +0000 (UTC) (envelope-from pali.gabor@googlemail.com) Received: from mail-fx0-f54.google.com (mail-fx0-f54.google.com [209.85.161.54]) by mx1.freebsd.org (Postfix) with ESMTP id C04E08FC14; Sun, 11 Jul 2010 15:03:00 +0000 (UTC) Received: by fxm13 with SMTP id 13so2079221fxm.13 for ; Sun, 11 Jul 2010 08:02:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:sender:received :in-reply-to:references:date:x-google-sender-auth:message-id:subject :from:to:cc:content-type; bh=tWs2JGFOb8waicDA/ehwuacr9dVZgiyxk+B8VD0oUxw=; b=iuoySgQro7rxt3HKUQ7zzpNZQPorpaJe61RR+4YDduffsrQKpTU6xCgVVEiChBYXol V0Ql0z+h3E7ER6aGCMcU3DPyRIhu3D6jahQq1dmEwwxiHrDWdDFkC6HtLeNCIfIJQhVk iFqT2CNWVIwzBQJqytdNrnIS2quuyBCO4NgEc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; b=OsaLpf4oanwYgcqfGypfSQ2hd4YtTd4yYvowKOSR+l9J1fgxm8Ntr0VUs5KN5SLJOn 77CB2xcisEWLymLeZdFnw2lNRgRxMuto4cpbzOjZYYngQi1XNziZ/NDrfw1+pW9hLW3A Iol6Detou4wVEzcEkGaWmJ4vOZ9/2dlgFVz3c= MIME-Version: 1.0 Received: by 10.86.27.5 with SMTP id a5mr8385260fga.32.1278860579658; Sun, 11 Jul 2010 08:02:59 -0700 (PDT) Sender: pali.gabor@googlemail.com Received: by 10.223.114.77 with HTTP; Sun, 11 Jul 2010 08:02:59 -0700 (PDT) In-Reply-To: <001126CD-F68F-46A3-90CE-CA2BE6E36B8E@freebsd.org> References: <4C376B0E.9050505@FreeBSD.org> <4C37713D.5060202@FreeBSD.org> <4A28A601-C87F-47C6-8CBE-5F1BF866CA4A@FreeBSD.org> <001126CD-F68F-46A3-90CE-CA2BE6E36B8E@freebsd.org> Date: Sun, 11 Jul 2010 17:02:59 +0200 X-Google-Sender-Auth: 5SRMEJcDJBGhSHHilNlBmnfA9DU Message-ID: From: Gabor PALI To: "Robert N. M. Watson" Content-Type: text/plain; charset=ISO-8859-1 Cc: svn-src-head@freebsd.org Subject: Re: svn commit: r209119 - head/sys/sys X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 11 Jul 2010 15:03:01 -0000 On Sun, Jul 11, 2010 at 11:27 AM, Robert N. M. Watson wrote: > [..] a duplicated carry(for example) [..] is not really acceptable. I see. It would be nice to model such extreme cases somehow, so we could test them against different solutions. > What sort of measurement did you do to show the speed loss, BTW? Here is my test code [1]. Feel free to comment on it and/or suggest improvements, fixes :) :g [1] http://people.freebsd.org/~pgj/patches/2010/07/11/counter_test.c