From owner-freebsd-isp@FreeBSD.ORG Wed Jul 9 12:50:04 2003 Return-Path: Delivered-To: freebsd-isp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4EFB837B401 for ; Wed, 9 Jul 2003 12:50:04 -0700 (PDT) Received: from mail.fbfguns.com (adsl-64-123-156-89.dsl.okcyok.swbell.net [64.123.156.89]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6BD7343F85 for ; Wed, 9 Jul 2003 12:50:03 -0700 (PDT) (envelope-from jb@fbfguns.com) MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 Date: Wed, 9 Jul 2003 14:50:02 -0500 Message-ID: <3BD4A5842C8AE2428158AB1EE6DCC37713FED4@mail.fbfguns.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: How do I max a 6Mbps link Thread-Index: AcNGSIuK9IXVXP8xS0mhbJ8eLyI5DQACn1kA From: "Jason Burgess" To: Subject: RE: How do I max a 6Mbps link X-BeenThere: freebsd-isp@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Internet Services Providers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Jul 2003 19:50:04 -0000 After you take away overhead, 600KB/s sounds about right. Jason Burgess jb@fbfguns.com =20 -----Original Message----- From: Lapinski, Michael (Research) [mailto:lapinski@crd.ge.com]=20 Sent: Wednesday, July 09, 2003 1:32 PM To: 'Dukemaster'; Lapinski, Michael (Research) Cc: freebsd-isp@freebsd.org; freebsd-questions@freebsd.org Subject: RE: How do I max a 6Mbps link I said roughly. -------------------------------------------------- Michael Lapinski Computer Scientist GE Research "I think there is a world market for maybe five computers." - IBM Chairman Thomas Watson, 1943 ->-----Original Message----- ->From: Dukemaster [mailto:dukemaster@hardwareelite.com] ->Sent: Wednesday, July 09, 2003 2:28 PM ->To: 'Lapinski, Michael (Research)' ->Cc: freebsd-isp@freebsd.org; freebsd-questions@freebsd.org ->Subject: RE: How do I max a 6Mbps link -> -> ->Wrong again a 6megabit link is exactly 768kilobytes/sec -> -> ->-----Original Message----- ->From: owner-freebsd-isp@freebsd.org ->[mailto:owner-freebsd-isp@freebsd.org] On Behalf Of Lapinski, Michael ->(Research) ->Sent: Wednesday, July 09, 2003 1:32 PM ->To: 'Simon'; freebsd-isp@freebsd.org;=20 ->freebsd-questions@freebsd.org; Max ->Clark ->Subject: RE: How do I max a 6Mbps link -> -> ->1) "6mbps link, which is roughly 3megs/sec" is inaccurate=20 -> 6 Mbits is roughly 600kilobytes/second -> ->2) A common way to speed up transfers is to tune your=20 -> tcp window sizes using /sbin/sysctl. -> The two you may wish to lok at are: -> net.inet.tcp.sendspace -> net.inet.tcp.recvspace -> try values like 128000 and 256000 -> Doing so so on bnoth machien sshould increase your throughput. -> -> A good reference for all the syctl variable is available at -> http://people.freebsd.org/~adrian/sysctl.descriptions,=20 -> the freebsd manual may have em soemwhere but i cant recall=20 -> where. -> ->-mtl -> ->-------------------------------------------------- ->Michael Lapinski ->Computer Scientist ->GE Research -> -> ->"I think there is a world market for maybe five computers." -> - IBM Chairman Thomas Watson, 1943 -> -> ->->-----Original Message----- ->->From: Simon [mailto:simon@optinet.com] ->->Sent: Wednesday, July 09, 2003 1:19 PM ->->To: freebsd-isp@freebsd.org; freebsd-questions@freebsd.org;=20 ->Max Clark ->->Subject: Re: How do I max a 6Mbps link ->-> ->-> ->-> ->->Sounds like you have a problem with your server/network hardware or ->->firewall/proftpd settings. FreeBSD out of the box on low-end=20 ->->Intel hardware ->->can easily sustain 6mbps link, which is roughly 3megs/sec.=20 ->Make sure ->->your harddrive on receiving end can write at least this fast=20 ->->and your network ->->is capable of such transfers. Sometimes faulty switches/cable=20 ->->wires can ->->cause packet loss/delays, causing a bottleneck. It could be a=20 ->->number of ->->things, but I would start with testing your network. ->-> ->->-Simon ->-> ->->On Wed, 9 Jul 2003 10:12:03 -0700, Max Clark wrote: ->-> ->->>Hi all, ->->> ->->>What configuration changes do I need to make to two=20 ->->freebsd-stable boxes to ->->>fully max out a 6Mbps/220ms network link? This is for bulk=20 ->->500+MB file ->->>transfers. ->->> ->->>The target application is proftpd with ncftpd as the client. ->->> ->->>Thanks in advance, ->->>Max ->->> ->->>_______________________________________________ ->->>freebsd-isp@freebsd.org mailing list ->->>http://lists.freebsd.org/mailman/listinfo/freebsd-isp ->->>To unsubscribe, send any mail to=20 ->->"freebsd-isp-unsubscribe@freebsd.org" ->->> ->-> ->-> ->->_______________________________________________ ->->freebsd-isp@freebsd.org mailing list ->->http://lists.freebsd.org/mailman/listinfo/freebsd-isp ->->To unsubscribe, send any mail to=20 ->"freebsd-isp-unsubscribe@freebsd.org" ->-> ->_______________________________________________ ->freebsd-isp@freebsd.org mailing list ->http://lists.freebsd.org/mailman/listinfo/freebsd-isp ->To unsubscribe, send any mail to "freebsd-isp-unsubscribe@freebsd.org" -> _______________________________________________ freebsd-isp@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-isp To unsubscribe, send any mail to "freebsd-isp-unsubscribe@freebsd.org"