From owner-freebsd-net@FreeBSD.ORG Thu Aug 29 01:30:37 2013 Return-Path: Delivered-To: net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id A19FC88D; Thu, 29 Aug 2013 01:30:37 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: from zxy.spb.ru (zxy.spb.ru [195.70.199.98]) by mx1.freebsd.org (Postfix) with ESMTP id 5B62426E5; Thu, 29 Aug 2013 01:30:37 +0000 (UTC) Received: from slw by zxy.spb.ru with local (Exim 4.69 (FreeBSD)) (envelope-from ) id 1VEr6H-000In5-Q7; Thu, 29 Aug 2013 05:32:41 +0400 Date: Thu, 29 Aug 2013 05:32:41 +0400 From: Slawa Olhovchenkov To: Andre Oppermann Subject: Re: Network stack changes Message-ID: <20130829013241.GB70584@zxy.spb.ru> References: <521E41CB.30700@yandex-team.ru> <521E78B0.6080709@freebsd.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <521E78B0.6080709@freebsd.org> User-Agent: Mutt/1.5.21 (2010-09-15) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: slw@zxy.spb.ru X-SA-Exim-Scanned: No (on zxy.spb.ru); SAEximRunCond expanded to false Cc: "Alexander V. Chernikov" , adrian@freebsd.org, freebsd-hackers@freebsd.org, freebsd-arch@freebsd.org, luigi@freebsd.org, ae@FreeBSD.org, FreeBSD Net X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Aug 2013 01:30:37 -0000 On Thu, Aug 29, 2013 at 12:24:48AM +0200, Andre Oppermann wrote: > > .. > > while Intel DPDK claims 80MPPS (and 6windgate talks about 160 or so) on the same-class hardware and > > _userland_ forwarding. > > Those numbers sound a bit far out. Maybe if the packet isn't touched > or looked at at all in a pure netmap interface to interface bridging > scenario. I don't believe these numbers. 80*64*8 = 40.960 Gb/s May be DCA? And use CPU with 40 PCIe lane and 4 memory chanell.