Date: Fri, 14 May 1999 09:20:56 -0600 From: Wes Peters <wes@softweyr.com> To: Dag-Erling Smorgrav <des@flood.ping.uio.no> Cc: Adrian Filipi-Martin <adrian@ubergeeks.com>, Harold Gutch <logix@foobar.franken.de>, freebsd-advocacy@FreeBSD.ORG Subject: Re: time for another upgrade? Message-ID: <373C3F58.13ABC952@softweyr.com> References: <Pine.BSF.4.05.9905140349080.6313-100000@thneed.ubergeeks.com> <xzp1zgj5090.fsf@localhost.ping.uio.no>
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Dag-Erling Smorgrav wrote:
>
> Adrian Filipi-Martin <adrian@ubergeeks.com> writes:
> > I was under the impression that the new machine was on gigabit
> > ethernet. As you correctly point out it is impossible to do 1TB on 100Mbps
> > ethernet. In fact you cannot even do the 969GB/day cited in the upgrade
> > press release. 969*2^30*10/86400 == 120,423,128bps. This agrees with what
> > the stats pages are reporting today.
>
> Why are you counting 10 bits per byte? Ethernet doesn't have start/stop bits.
>
> OTOH, I wonder if the Ethernet preamble and trailer have to be
> subtracted from the 100 Mbps figure...
Yes, it does.
--
"Where am I, and what am I doing in this handbasket?"
Wes Peters Softweyr LLC
http://www.softweyr.com/~softweyr wes@softweyr.com
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