From owner-freebsd-arch@FreeBSD.ORG Thu Sep 19 19:57:16 2013 Return-Path: Delivered-To: freebsd-arch@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 949326AC; Thu, 19 Sep 2013 19:57:16 +0000 (UTC) (envelope-from gnn@neville-neil.com) Received: from vps.hungerhost.com (vps.hungerhost.com [216.38.53.176]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 5E91F25E2; Thu, 19 Sep 2013 19:57:16 +0000 (UTC) Received: from [209.249.190.124] (port=62392 helo=gnnmac.hudson-trading.com) by vps.hungerhost.com with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.80.1) (envelope-from ) id 1VMkLg-0005US-Sg; Thu, 19 Sep 2013 15:57:13 -0400 Content-Type: multipart/signed; boundary="Apple-Mail=_C4650C93-33A2-491F-AF25-1F753C6C0524"; protocol="application/pgp-signature"; micalg=pgp-sha1 Mime-Version: 1.0 (Mac OS X Mail 6.6 \(1510\)) Subject: Re: Network stack changes From: George Neville-Neil In-Reply-To: Date: Thu, 19 Sep 2013 15:57:14 -0400 Message-Id: References: <521E41CB.30700@yandex-team.ru> <6BDA4619-783C-433E-9819-A7EAA0BD3299@neville-neil.com> <20130914142802.GC71010@onelab2.iet.unipi.it> To: Luigi Rizzo X-Mailer: Apple Mail (2.1510) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - vps.hungerhost.com X-AntiAbuse: Original Domain - freebsd.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - neville-neil.com X-Get-Message-Sender-Via: vps.hungerhost.com: authenticated_id: gnn@neville-neil.com Cc: freebsd-hackers@freebsd.org, Luigi Rizzo , FreeBSD Net , "freebsd-arch@freebsd.org Arch" X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 Sep 2013 19:57:16 -0000 --Apple-Mail=_C4650C93-33A2-491F-AF25-1F753C6C0524 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=iso-8859-1 On Sep 14, 2013, at 15:24 , Luigi Rizzo wrote: > On Saturday, September 14, 2013, Olivier Cochard-Labb=E9 = > wrote: >> On Sat, Sep 14, 2013 at 4:28 PM, Luigi Rizzo = wrote: >>>=20 >>> IXIA ? For the timescales we need to address we don't need an IXIA, >>> a netmap sender is more than enough >>>=20 >>=20 >> The great netmap generates only one IP flow (same src/dst IP and same >> src/dst port). >=20 > True the sample app generates only one flow but it is trivial to = modify it > to generate multiple flows. My point was, we have the ability to = generate > high rate traffic, as long as we do tolerate a .1-1us jitter. Beyond = that, > you do need some ixia-like solution. >=20 On the bandwidth side, can a modern sender with netmap really do a full = 10G? I hate the cost of an IXIA but I have not been able to destroy our stack as effectively with = anything else. Best, George --Apple-Mail=_C4650C93-33A2-491F-AF25-1F753C6C0524 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org iEYEARECAAYFAlI7VxoACgkQYdh2wUQKM9Jk1wCfdVVHR42PXLlq/dg73BvFzzMz hakAn33mXvpLXemWDwab+2RZo1M0Fdmw =CKz7 -----END PGP SIGNATURE----- --Apple-Mail=_C4650C93-33A2-491F-AF25-1F753C6C0524--