From owner-freebsd-current Sat Aug 29 19:07:01 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id TAA27452 for freebsd-current-outgoing; Sat, 29 Aug 1998 19:07:01 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id TAA27443 for ; Sat, 29 Aug 1998 19:06:57 -0700 (PDT) (envelope-from grog@freebie.lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.9.1/8.9.0) with ESMTP id LAA17384; Sun, 30 Aug 1998 11:35:58 +0930 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.1/8.9.0) id LAA06057; Sun, 30 Aug 1998 11:35:56 +0930 (CST) Message-ID: <19980830113556.P17530@freebie.lemis.com> Date: Sun, 30 Aug 1998 11:35:56 +0930 From: Greg Lehey To: "Gregory P. Smith" , tom@uniserve.com Cc: current@FreeBSD.ORG Subject: Re: Intel PRO/1000 Gigabit Adapter References: <199808231741.KAA05988@hub.freebsd.org> <199808241845.LAA00873@ryouko.nas.nasa.gov> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.91.1i In-Reply-To: <199808241845.LAA00873@ryouko.nas.nasa.gov>; from Gregory P. Smith on Mon, Aug 24, 1998 at 11:45:02AM -0700 WWW-Home-Page: http://www.lemis.com/~grog Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Monday, 24 August 1998 at 11:45:02 -0700, Gregory P. Smith wrote: > tom@uniserve.com wrote: >> Gigabit ethernet is 125MB/s, so would use more of PCI. The only hope is >> multiple independant PCI buses (some motherboards already have this). > > Good luck getting a single x86 CPU to handle the interrupt load of even > a single card with the overhead of processing 1500 byte packets at > Gigabit speeds... (based on observations of other Gig speed class > drivers and NICs I've seen). ;) Who said that gigabit Ethernet transfers data between individual machines at 125 MB/s? It's the theoretical maximum speed of a broadcast medium. Connect 100 machines together over gigabit Ethernet and you can (theoretically) still transfer 1 MB/s without problems. Sure, there are cases where you may want to use the bandwidth, but IMO that's not the real purpose of gigabit Ethernet. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message