Date: Wed, 11 Jul 2001 09:14:01 -0700 From: Jim Pirzyk <Jim.Pirzyk@disney.com> To: Leo Bicknell <bicknell@ufp.org>, freebsd-bugs@FreeBSD.ORG Subject: Re: conf/28882: Network defaults are absurdly low. Message-ID: <01071109140103.89158@snoopy> In-Reply-To: <200107111550.f6BFo2g12771@freefall.freebsd.org> References: <200107111550.f6BFo2g12771@freefall.freebsd.org>
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On Wednesday 11 July 2001 08:50 am, Leo Bicknell wrote: > The following reply was made to PR conf/28882; it has been noted by GNATS. > > From: Leo Bicknell <bicknell@ufp.org> > To: Alfred Perlstein <alfred@freebsd.org> > Cc: freebsd-gnats-submit@freebsd.org, bicknell@ufp.org, > ras@e-gerbil.net > Subject: Re: conf/28882: Network defaults are absurdly low. > Date: Wed, 11 Jul 2001 11:42:20 -0400 > > On Tue, Jul 10, 2001 at 11:31:57PM -0500, Alfred Perlstein wrote: > > I think all the suggestions here are valid, however not for > > the default FreeBSD install. Your efforts would be much better > > spent writing a section of the handbook or providing a patch > > that either documents or makes it easy to set the values > > for higher performance via rc.conf. > > My methods aside, I will respectfully disagree. Working for an > ISP I explain to 2-3 customers per month why a user on a cable > modem can't get full speed to a server on our network, and ever > time turning up the tcp sizes fixes it. 16k is too small. I > will accept that I'm way off base, and that maybe 32k is all that's > needed. I think it is reasonable for an end user to expect a > system on a DSL/Cable modem line can take full advantage of it, > and that some of us "smart people" should be able to make that > happen in some reasonable way. I find in our enviroment that 16K is an optimal size for 10M Flat enet and 32K is the best for 100Mb switched and 512k works for OC3 atm. This is though with a maxsockbuf set to 768k and tcp_extentions turned on. My point is that the defaults you are suggesting are not necessarly the best for all cases. > A handbook section is definately necessary though, as there are > clearly a number of special cases (in particular IRC and News > servers, but also web and ftp servers) that may need additional > changes. I would agree for a handbook section. Currently I find http://www-didc.lbl.gov/tcp-wan.html the best discussion on how to tune not just FreeBSD but other OSes for speed. - JimP -- --- @(#) $Id: dot.signature,v 1.10 2001/05/17 23:38:49 Jim.Pirzyk Exp $ __o Jim.Pirzyk@disney.com ------------- pirzyk@freebsd.org _'\<,_ Senior Systems Engineer, Walt Disney Feature Animation (*)/ (*) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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