From owner-freebsd-hackers@FreeBSD.ORG  Sat Apr 12 23:56:03 2008
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 76B531065670
	for <hackers@freebsd.org>; Sat, 12 Apr 2008 23:56:03 +0000 (UTC)
	(envelope-from kip.macy@gmail.com)
Received: from wa-out-1112.google.com (wa-out-1112.google.com [209.85.146.179])
	by mx1.freebsd.org (Postfix) with ESMTP id 38EA48FC1F
	for <hackers@freebsd.org>; Sat, 12 Apr 2008 23:56:03 +0000 (UTC)
	(envelope-from kip.macy@gmail.com)
Received: by wa-out-1112.google.com with SMTP id k17so1169472waf.3
	for <hackers@freebsd.org>; Sat, 12 Apr 2008 16:56:02 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma;
	h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references;
	bh=gSCHVaFWxJ7be+wXSjEZVUG4R7457wwQ+X+laQ5GZLg=;
	b=dyAFv+ivDNuaDre3A/Ogv1Egl8C68twqeTaCuBELzvy1iwGOCQ5umRoAoga/nJI+vGvKDTTaFmk9pi2F44OrId4E8L/3rIwhVX6LDh6ql8qIYw4EV+IVPChpnRfLmtalv9c0aAcROaXfj/uao6dmIRU0xnG4kGINlIDfK9FDF7k=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma;
	h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references;
	b=ZNjPoKDecHz4U5uOOdxoZcZkUTOu/yqW2z3vIqeblGt2uQmvloe83FfP6hwpC3X9uHr1NuuQHmsVHx8tHCz5orXQvDnJlT5kJtVuYWlDx5E2mDsVprHd8DLxCg2MnYTsWh5Uwkc9HCs7z439B1+eQnxcU+rKc/If8+nG5QVDLfg=
Received: by 10.115.61.1 with SMTP id o1mr5196595wak.94.1208044562951;
	Sat, 12 Apr 2008 16:56:02 -0700 (PDT)
Received: by 10.114.255.16 with HTTP; Sat, 12 Apr 2008 16:56:02 -0700 (PDT)
Message-ID: <b1fa29170804121656q34ff9c2cq32ba2445532a7c98@mail.gmail.com>
Date: Sat, 12 Apr 2008 16:56:02 -0700
From: "Kip Macy" <kip.macy@gmail.com>
To: "Matthew Dillon" <dillon@apollo.backplane.com>
In-Reply-To: <200804122353.m3CNr7sR066379@apollo.backplane.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
References: <20080309212441.GA56523@porthos.spock.org>
	<200804122156.m3CLuot5065753@apollo.backplane.com>
	<b1fa29170804121533q792b6491u106794ce722e78e3@mail.gmail.com>
	<200804122353.m3CNr7sR066379@apollo.backplane.com>
Cc: hackers@freebsd.org, Jonathan Chen <jon@freebsd.org>
Subject: Re: mlock & COW
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 12 Apr 2008 23:56:03 -0000

>     As I said, messy.
>

Yup, which is why I bypassed the whole affair to have any confidence
in my solution. Bypassing the copy to user makes a huge difference cpu
usage at 10Gbps.


 -Kip