From owner-freebsd-ipfw@FreeBSD.ORG  Mon Dec 18 05:05:37 2006
Return-Path: <owner-freebsd-ipfw@FreeBSD.ORG>
X-Original-To: freebsd-ipfw@freebsd.org
Delivered-To: freebsd-ipfw@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id A687A16A407
	for <freebsd-ipfw@freebsd.org>; Mon, 18 Dec 2006 05:05:37 +0000 (UTC)
	(envelope-from infofarmer@gmail.com)
Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.189])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 0D47F43C9F
	for <freebsd-ipfw@freebsd.org>; Mon, 18 Dec 2006 05:04:20 +0000 (GMT)
	(envelope-from infofarmer@gmail.com)
Received: by nf-out-0910.google.com with SMTP id x37so1737850nfc
	for <freebsd-ipfw@freebsd.org>; Sun, 17 Dec 2006 21:04:12 -0800 (PST)
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com;
	h=received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth;
	b=n5vxD/FciCr3h2EwquwUBM0ppdBHOx23DsiIXASGcLcbpAgYdvWMYLd3ZyaUqw615EzwpPH44Mm+YwF0nOiw7xn2v+XZbM0Y4aHG5xMNZvbzVWnuk26S5bntKVVoLz25smoKJ+C+DvrUmaxuWa+R4m7QPiTkO/wK9wIXFKvVT1o=
Received: by 10.78.166.7 with SMTP id o7mr2608373hue.1166416660318;
	Sun, 17 Dec 2006 20:37:40 -0800 (PST)
Received: by 10.78.167.16 with HTTP; Sun, 17 Dec 2006 20:37:40 -0800 (PST)
Message-ID: <cb5206420612172037j178c3389l8f6429928ef30c2b@mail.gmail.com>
Date: Mon, 18 Dec 2006 07:37:40 +0300
From: "Andrew Pantyukhin" <infofarmer@FreeBSD.org>
Sender: infofarmer@gmail.com
To: Looza <elias_nogueira@hotmail.com>
In-Reply-To: <7922408.post@talk.nabble.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
References: <7922408.post@talk.nabble.com>
X-Google-Sender-Auth: efe436986f2cd81e
Cc: freebsd-ipfw@freebsd.org
Subject: Re: problem simulating a LFN
X-BeenThere: freebsd-ipfw@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: IPFW Technical Discussions <freebsd-ipfw.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-ipfw>,
	<mailto:freebsd-ipfw-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-ipfw>
List-Post: <mailto:freebsd-ipfw@freebsd.org>
List-Help: <mailto:freebsd-ipfw-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-ipfw>,
	<mailto:freebsd-ipfw-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 18 Dec 2006 05:05:37 -0000

On 12/18/06, Looza <elias_nogueira@hotmail.com> wrote:
> My first question is if anyone knows off some way to
> get the processing out of the CPU so that I can achieve
> gigabit speeds without ?

Like you already noticed, better NICs help. BTW, which
ones do you have? See drivers' manpages for info about
hardware offloading. Also, have a look at polling(4), it
might (or might not) help.

> My second question is  if there is a way of setting the
> ipfw delay option so that it does not alter the throughput?

You'll have to read ipfw(8) for that. In short, you might
have to increase the queue size so that it can hold 100ms
worth of traffic.