From owner-freebsd-hackers Tue Apr 23 11:37:16 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from avocet.prod.itd.earthlink.net (avocet.mail.pas.earthlink.net [207.217.120.50]) by hub.freebsd.org (Postfix) with ESMTP id 6C8EF37B41D for ; Tue, 23 Apr 2002 11:37:08 -0700 (PDT) Received: from pool0547.cvx22-bradley.dialup.earthlink.net ([209.179.200.37] helo=mindspring.com) by avocet.prod.itd.earthlink.net with esmtp (Exim 3.33 #2) id 17059d-0006LI-00; Tue, 23 Apr 2002 11:36:42 -0700 Message-ID: <3CC5A999.A1A4D313@mindspring.com> Date: Tue, 23 Apr 2002 11:36:09 -0700 From: Terry Lambert X-Mailer: Mozilla 4.7 [en]C-CCK-MCD {Sony} (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: Nate Williams Cc: Attila Nagy , Tomas Svensson , hackers@FreeBSD.ORG Subject: Re: sendfile() in tftpd? References: <3CC59C44.13013A1E@mindspring.com> <15557.40442.852602.681416@caddis.yogotech.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Nate Williams wrote: > Going to TCP soon assumes that you have a lossless medium in order to > transmit packets over. If you're using a lossy medium, TFTP (and other > UDP based protocols) can kick their butt because of TCP's assumption > that packet loss is a function of congestion, which is often not the > case in lossy mediums such as wirless. :( THat's true. I can't really think of an example of such a medium, though, that you would still trust to netboot something. 8-). Maybe 802.11b. 8-(. The specific problem here is that "UDP is ``too slow''"; it looks like a classic "Doctor, it hurts when I do this...". 8-) 8-). -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message