Date: Wed, 09 Jul 2003 13:46:53 -0400 From: "Simon" <simon@optinet.com> To: "freebsd-isp@freebsd.org" <freebsd-isp@freebsd.org>, "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>, "Lapinski, Michael (Research)" <lapinski@crd.ge.com>, "Max Clark" <max.clark@media.net> Subject: RE: How do I max a 6Mbps link Message-ID: <20030709174739.D4EFF43F3F@mx1.FreeBSD.org> In-Reply-To: <E4AAC34FE3CF564D8AE89EB8AC333FD70916516D@xmb03crdge.crd.ge.com>
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Ops, you're absolutely right, I don't know how I got the 3megs, I'm in the middle of getting a mortgage, if you know what I mean. Sorry for any confusion I might have caused. I do know my bits and bytes and I was way off indeed, my mistake. -Simon On Wed, 9 Jul 2003 13:31:54 -0400, Lapinski, Michael (Research) wrote: >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" >-> >
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