Date: Wed, 6 Dec 2000 07:03:48 GMT From: Cliff Sarginson <cliff@raggedclown.net> To: Alfred Perlstein <bright@wintelcom.net>, parkpark <parkpark@home.com>, questions@FreeBSD.ORG Subject: Re: theoretical limit for TCP/IP connections Message-ID: <E143YcG-00004L-00@post.mail.nl.demon.net>
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> * parkpark <parkpark@home.com> [001205 20:50] wrote: > > > > Pleaes Help me to investigate the theoretical limit for TCP/IP > > connections over a 100Mbps line. I like to know what the line > > capacity is for a client which does: connect(), write(), close(), > > and the server does: accept(), read(), close(). These calculations > > are complicated, but I'm sure soneone can find me some snaswers. > > Please hemp me to do the calculations as soon as possible as this > > will give me a better idea of how good my current performance is > > compared to the theoretical limit for Freebsd!. > > Please wrap lines at 70 characters. > > Er, I've gotten full 100mbit with not very fast pentium machines. > > I'm not sure what you mean exactly by your question though. > I presume what you are really asking is about the efficiency of the protocol implementations from FBSD. I guess there are programs out there. But what exactly are you comparing it with ? An easy test would be to do some large file transfers I would have thought. Maybe some NFS copying. Set up a controlled environment and try it out. On the other hand since you have heard of accept,connect and other socket level system calls you could write your own test program ! That is not very difficult to do. (if you want to pay me, I will write them for you :). Remember there are a lot of things going on here. 100Mbits is the hardware spec. of the ethernet, the raw bit transfer rate. There will also be the TCP/IP overhead. There will also be the application protocol overhead. The quality of your network hardware Etc. Let us know what you are comparing it with... Cliff To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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