From owner-freebsd-questions@FreeBSD.ORG Wed Jul 9 11:27:45 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7AC7F37B401; Wed, 9 Jul 2003 11:27:45 -0700 (PDT) Received: from boreas.primus.ca (mail.tor.primus.ca [216.254.136.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8C20343F93; Wed, 9 Jul 2003 11:27:44 -0700 (PDT) (envelope-from dukemaster@hardwareelite.com) Received: from dialin-130-198.hamilton.primus.ca ([209.90.130.198] helo=DS9) by boreas.primus.ca with esmtp (Exim 3.36 #3) id 19aJfJ-0006Gz-0A; Wed, 09 Jul 2003 14:27:42 -0400 From: "Dukemaster" To: "'Lapinski, Michael (Research)'" Date: Wed, 9 Jul 2003 14:27:42 -0400 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2616 In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Importance: Normal cc: freebsd-isp@freebsd.org cc: freebsd-questions@FreeBSD.ORG Subject: RE: How do I max a 6Mbps link X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Jul 2003 18:27:45 -0000 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; 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 6 Mbits is roughly 600kilobytes/second 2) A common way to speed up transfers is to tune your 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, the freebsd manual may have em soemwhere but i cant recall 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; 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 ->Intel hardware ->can easily sustain 6mbps link, which is roughly 3megs/sec. Make sure ->your harddrive on receiving end can write at least this fast ->and your network ->is capable of such transfers. Sometimes faulty switches/cable ->wires can ->cause packet loss/delays, causing a bottleneck. It could be a ->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 ->freebsd-stable boxes to ->>fully max out a 6Mbps/220ms network link? This is for bulk ->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 ->"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"